Typically, most four-year institutions will require the following classes to transfer:
2 English composition courses.
1 Speech course.
1 Critical thinking course.
1 Physical science class.
1 Biological science class.
1 Health class.
2 Physical education courses.
Completion of college algebra
That's all I think
Final answer:
To transfer from a community college to a four-year university, students typically need to complete general education courses and any pre-major or major-specific courses required for their intended degree. The number of units required to transfer generally ranges from 60 to 70 semester units. Consulting with academic advisors and reviewing articulation agreements ensures a smooth transfer process.
Explanation:
If you are planning to transfer from a community college to a four-year university, the specific classes required for transfer can vary based on the university and your chosen major. Generally, you will need to complete a core curriculum that includes general education courses, such as English, mathematics, science, social science, and humanities. In addition to these general requirements, it's important to be aware of any pre-major or major-specific courses needed for your intended four-year degree program.
The number of units required to transfer typically ranges from 60 to 70 semester units, which is equivalent to about two years of full-time study. This allows students to achieve junior standing at the university upon transfer. However, some programs have more stringent requirements, including additional prerequisites or higher GPA standards.
It is crucial to consult with an academic advisor at the community college and to review the transfer agreements in place with the four-year universities you are interested in. These transfer agreements, sometimes called articulation agreements, provide detailed guidance on which courses will fulfill requirements at the university level and help ensure a smooth transition.
An iceberg at its melting point
(0°C) absorbs 2.40*10^7 J of heat
from the sun. What mass of ice
melts to 0°C water as a result?
(Unit = kg)
The mass of the iceberg is 71.9 kg
Explanation:
The amount of thermal energy needed to completely melt a substance at its melting point is given by
[tex]Q=\lambda m[/tex]
where
[tex]\lambda[/tex] is the latent heat of fusion
m is the mass of the substance
In this problem, we have a block of ice at its melting point (zero degrees). The amount of heat given to the block is
[tex]Q=2.40\cdot 10^7 J[/tex]
And the latent heat of fusion of ice is
[tex]\lambda = 334 J/g[/tex]
So, we can re-arrange the equation to find m, the amount of ice that will melt:
[tex]m=\frac{Q}{\lambda}=\frac{2.40\cdot 10^7}{334}=71856 g = 71.9 kg[/tex]
Learn more about specific heat:
brainly.com/question/3032746
brainly.com/question/4759369
#LearnwithBrainly
1500 Joules of work are done lifting a 500 N weight. How high was the weight raised as a result of this work ?
Work in general = (force) x (distance)
Work to lift a weight = (weight of the weight) x (distance lifted)
1500 J = (500 N) x (height)
Divide each side by 500 N :
Height = (1500 J) / (500 N)
Height = 3 meters
Final answer:
Using the work-energy principle, the 500 N weight was raised to a height of 3 meters with 1500 Joules of work done.
Explanation:
To determine how high the 500 N weight was raised using 1500 Joules of work, we can use the work-energy principle, which states that work done (W) is equal to the change in potential energy (PE).
The formula for work when lifting an object vertically is:
W = F × d, where:
W is the work done in joules (J),
F is the force in newtons (N),
d is the distance in meters (m).
Here, we are given that a 500 N weight is lifted, and we have the amount of work 1500 J. We can rearrange the formula to solve for distance (d):
d = W / F
Substituting the given values, we get:
d = 1500 J / 500 N = 3 meters
Therefore, the weight was raised up to 3 meters high as a result of the 1500 J of work.
Based on the diagram which of the following statements is true of a helium atom
Answer: Option 2
Explanation:
Option 1 is wrong because there are 2 protons and 2 neutrons in nucleus.
Option 3 is wrong because there are two electrons moving around nucleus.
Option 4 is wrong because electrons are negatively charged and are moving around the nucleus.
Option 5 is wrong because there equal amount of protons and electrons with 2 each.
what is the potential energy of the ball when it gets to its maximum height just before falling back to the ground
Answer:
I will say that the the potential energy will be at its maximum.
Explanation:
potential energy deals with gravity and gravity deals with height, so when a object is in its maximum height it will have the maximum potential energy.
H2O
Given the chemical formula, how is this substance MOST LIKELY classified?
A) atom
B) compound
C) both atom and compound
D) neither atom nor compound
Answer:
C
Explanation: Because its water, self explainitory.
The snowblower driver figured that he moved 1250 kg of snow. If the plow pushes with a force of 40000 Newton’s, how fast did the snow accelerate? (Assume no friction)
The acceleration of snow is 32 m/[tex]s^{2}[/tex].
Explanation:
According to Newton's second law of motion, the force acting on any object is directly proportional to the product of mass and acceleration acting on the object.
So if the object is a snowblower driver with mass 1250 kg and the force acting on it is 40000 N, then the acceleration of the snow can be determined from the ratio of force to mass.
Force = Mass × Acceleration
Acceleration = [tex]\frac{Force}{Mass}[/tex] = [tex]\frac{40000}{1250}=32 m/s^{2}[/tex]
Thus, the acceleration of the snow is 32 m/[tex]s^{2}[/tex].
What is the power of 10 when 157,821 is written in scientific notation?
Answer:
The power of 10 in the given value is 5.
Explanation:
scientific notation is expressed in the decimal form. That means always written in the power of 10 form. The decimal place is put after 1 digit.
Answer:
1.57821 * 10^5 (5)
Explanation:
Scientific notation is defined as the representation in which a number is expressed in the decimal form. That means always written in the power of 10 form. The decimal place is put after 1 digit.
We are given a numerical value of 157,821
Converting this into scientific notation, we get:
Hence, the power of 10 in the given numerical value is 5.
a hockey puck sliding on the ice has ______.
A) kinetic energy only
B) potential energy only
C) no kinetic or potential
D) some kinetic and potential
Answer: kinetic energy only
Explanation: kinetic energy only since it's moving
Balance the following equation Choose "blank" if no coefficient other than lis needed
"K+
K-
H₂O -
H₂+1
КОН
The balanced chemical reaction is
2K + 2H2O--- H2 + 2KOH
What is a chemical equation?A chemical equation is described as the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.
From the example, if we follow the stoichiometry of the reaction , 2 moles of potassium metal reacts with 2 moles of water to give 1 mole of hydrogen gas and 2 mole potassium hydroxide.
The chemical equation is very important as it tells us about the reacting species and resulting product.
The coefficient of the reacting species and resulting products gives information about the mole ratio or molecular ratio of the elements or compounds in the reaction.
Learn more about chemical reaction at: https://brainly.com/question/16416932
#SPJ1
If a bicyclist has a mass of 70 KG and a velocity of 25M/S, what is the momentum of the bicyclist?
Answer:
1750 kgm/s
Explanation:
The equation for momentum is p = mv = 70 * 25 = 1750.
The momentum of the bicyclist with the given value of mass travelling at the given velocity is 1750kgm/s.
What is Momentum?Momentum is simply the product of the mass of an object and its velocity.
Its is expressed as;
P = m × v
Where m is the mass of the object and v is its velocity.
Given the data in the question;
Mass of bicyclist m = 70kgVelocity v = 25m/sMomentum P = ?We substitute the given values into the expression above.
P = m × v
P = 70kg × 25m/s
P = 1750kgm/s
Therefore, the momentum of the bicyclist with the given value of mass travelling at the given velocity is 1750kgm/s.
Learn more about momentum here: brainly.com/question/14952164
#SPJ2
What does the impulse-momentum theorem state? A. Impulse equals change in momentum B. Impulse and momentum change force. C. Impulse and momentum are conserved. D. Force equals change in momentum
APEX physical science
Impulse equals change in momentum.
Many organ system serve to help maintain a healthy body. The excretory system is an organ system which is composed of all sweat glands, the lungs, the rectum, and the kidneys, which all function to remove waste material. How does removing excess waste help the body to maintain overall health?
a removing excess waste helps the body increase its internal temperature.
b removing excess waste prevents people from growing to tall.
c removing excess waste prevents to body from recycling reusable material.
d removing excess waste helps prevent disease and support cell function
Answer: D
Explanation:
Cause removing excess waste from the body helps to maintain a steady health
Final answer:
The excretory system's role in removing excess waste is critical for preventing disease and supporting cell function by maintaining a balanced internal environment and removing harmful substances.
Explanation:
The excretory system plays a crucial role in maintaining the overall health of the body by ensuring the removal of excess waste and toxins. This system includes organs such as the kidneys, liver, skin, lungs, and large intestine. The kidneys filter blood, removing waste products and excess substances, forming urine which is then excreted from the body.
The skin eliminates waste through sweat, the liver metabolizes toxins and excretes bilirubin, the lungs expel carbon dioxide and water vapor, and the large intestine helps to remove solid waste. By doing all this, the excretory system helps prevent the accumulation of harmful substances which could lead to disease and supports the function of cells by maintaining a stable internal environment.
Removing excess waste helps to prevent disease by eliminating toxins that can damage tissues and cells. It also supports cell function by maintaining a balance of water, salts, and organic substances within the body. Therefore, the correct answer to the question is: d. Removing excess waste helps prevent disease and supports cell function.
Human impact on ecosystems would most likely lead to secondary succession over primary succession.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
The given statement is true.
Secondary succession refers to the series of community changes that take place on previously established but damaged or disturbed habitat.
It helps in reviving or re-establishment of the similar ecosystem that previously existed.
It starts by a disturbing event such as natural disaster (hurricane, tornado, earthquake et cetera) and human interventions (deforestation, accidental forest fires caused by human activities, habitat destruction due to mining or dam construction et cetera) which greatly reduce the ecosystem already established.
Human impact on ecosystems often leads to secondary succession rather than primary succession.
Explanation:In ecosystems, primary succession occurs in areas that were previously devoid of life, such as newly formed volcanic islands or bare rock surfaces. Secondary succession, on the other hand, occurs in areas that have been disturbed but still retain some soil or remnants of the original community.
Human impact on ecosystems often leads to disturbances such as deforestation, fires, or agriculture. These disturbances create conditions for secondary succession rather than primary succession, as there is generally still some soil and seed bank present.
For example, if a forest is clear-cut, the remaining soil and seeds in the area can allow for the regrowth of vegetation, leading to secondary succession.
Learn more about succession here:https://brainly.com/question/23144283
#SPJ1
How much time is required for a bicycle to travel a distance of 100 m at an average speed of 2 mi./s
The time required for a bicycle to travel the distance of 100 m is 50 s.
Explanation:
We know that speed is the measure of how fast an object can move to cover a given distance in given time. So it is measured as the ratio of distance per unit time.
[tex]Speed =\frac{\text { Distance }}{\text { Time }}[/tex]
As it is scalar quantity, direction does not play any role in it.
So time taken for covering the distance of 100 m with speed of 2 m/s can be determined as
[tex]Time =\frac{\text { Distance }}{\text { Speed }}=\frac{100}{2}=50 seconds[/tex]
Thus, 50 s will be required by the bicycle to cover 100 m distance.
What are the formulas for Calculating Kinetic Energy and Potential Energy?
Answer:
KE = .5(m)(v²) and PE = mgh
Explanation:
m = mass, v = velocity, g = gravity (9.8 on earth), h = height.
Answer:
[tex]\boxed{\bold { \large { \boxed {KE=\frac{1}{2} mv^2 \ , \ PE=mgh}}}}[/tex]
Explanation:
Kinetic energy formula
[tex]\displaystyle KE=\frac{1}{2} mv^2[/tex]
Potential energy formula
[tex]\displaystyle PE=mgh[/tex]
[tex]\displaystyle KE \Rightarrow \sf kinetic \ energy \ (J)[/tex]
[tex]\displaystyle PE \Rightarrow \sf potential \ energy \ (J)[/tex]
[tex]\displaystyle m \Rightarrow \sf mass \ (kg)[/tex]
[tex]\displaystyle v \Rightarrow \sf velocity \ (m/s)[/tex]
[tex]\displaystyle g \Rightarrow \sf acceleration \ of \ gravity\ (m/s^2)[/tex]
[tex]\displaystyle h \Rightarrow \sf height \ (m)[/tex]
A skydiver jumped out of a plane, determine distance he descended after 5 seconds. Gravity is pulling him down at 10 m/s^2 (air resistance is negligible).
Answer: 125 m
Explanation:
This problem is related to vertical motion and can be solved with the following equation:
[tex]y-y_{o}=V_{o}t-\frac{1}{2}gt^{2}[/tex] (1)
Where:
[tex]y-y_{o}=\Delta y[/tex] is the difference between the final height [tex]y[/tex] and initial height [tex]y_{o}[/tex]. Let's take into account the initial height is greater than the final height, since the skydiver is descending.
[tex]V_{o}=0 m/s[/tex] Is the skydiver's initial velocity, assuming the plane was not moving at that moment
[tex]t=5 s[/tex] is the time
[tex]g=10 m/s^{2}[/tex] is the acceleration due gravity
Solving the equation:
[tex]\Delta y=-\frac{1}{2}gt^{2}[/tex] (2)
[tex]\Delta y=-\frac{1}{2}(10 m/s^{2})(5 s)^{2}[/tex] (3)
[tex]\Delta y=-125 m[/tex] (4) Here, the negative sign only indicates the position of the skydiver, and remember the initial height is greater than the final height.
In fact, the distance is positive: 125 m
What event happens about once every month? A. a revolution of the Earth around the Sun B. a rotation of the Earth C. a full Moon D. a lunar eclipse
Answer:
C. A full moon.
Explanation:
A is a year.
B is a day.
D I'm not sure how often a lunar eclipse occurs, but definitely the every month!
Among the given options, the phenomenon which occurs once in every month is full moon. Rotation of earth is taking place every day and revolution of earth around sun is completing within one year.
What is full moon ?The lunar phase during which the moon is completely lit from Earth's viewpoint is known as the full moon. When earth is situated halfway between the sun and the moon, this happens.
This indicates that the lunar hemisphere facing earth's near side is fully illuminated by the sun and appears as a roughly spherical disc. On average, there is a full moon once each month.
A synodic month, or the duration between a full moon and the subsequent occurrence of the same phase, lasts on average around 29.53 days.
Therefore, the full moon occurs on either the 14th or 15th day of the lunar month in those lunar calendars where each month starts on the day of the new moon.
Find more on full moon :
https://brainly.com/question/28660315
#SPJ6
Complete the formula for the kinetic energy equation of a moving object
Answer:
Let the mass of an object starting from rest be m and the velocity with which it travels be v
Kinetic energy of the object will be K.E = mv^2/2
If the object's velocity increases/decreases then kinetic energy would be K.E = m(v^2-u^2)/2 where u is the initial velocity and v is the final velocity
Hope this helps!
What factors affect water quality?
Answer:
Explained below:
Explanation:
Water quality is determined in terms of the physical, chemical and biological content of water. The quality of water of lakes and rivers variates with the seasons and also geographic areas, still in the absence of pollution. There are so many factors which affect water quality are as follows :
Pesticides
Temperature
Runoff
Sedimentation
Erosion
pH
Dissolved oxygen
Pesticides
Litter and rubbish
Decayed organic materials
Toxic and hazardous substances
Oils, grease, and other chemicals
Att=0 a car has a speed of 30 m/s. Att-6 s, its speed is 14 m/s.
What is its average acceleration during this time interval?
The average acceleration during this time interval is [tex]-2.67 \mathrm{m} / \mathrm{s}^{2}[/tex]
Explanation:
Average acceleration can be measured as the ratio of change in speed to change in time. As the initial speed at initial time is 30 m/s at t = 0 and then at t = 6 s, the speed is decreased to 14 m/s. Then the average acceleration will be
[tex]Average acceleration =\frac{14-30}{6-0} =-2.67m/s^{2}[/tex]
So the average acceleration is negative which indicates that there is deceleration occurrence in the system.
Express 7.62 * 10 ^ (- 4) standard form
0.0062
72600
0.000762
76200
Answer:
76200
Explanation:
explain why a moving object cannot come to a stop instantaneously (in zero seconds)
Answer: The pressure from the air and force of who or what used effort to make it move. For example you roll a ball it doesn't stop unless it runs out of the force which in this case would be energy.
Explanation:
Knowledge
In a vacuum, two particles have charges of q1 and q2, where q1 = +4.2C. They are separated by a distance of 0.31 m, and particle 1 experiences an attractive force of 4.5 N. What is the value of q2, with its sign?
Answer:
11.44pC.
Explanation:
F = kq1q2/r^2
q2 = Fr^2/kq1
= 4.5 x 0.31^2/4.2x 9 x 10^9
= 1.144 x 10^-11C
= 11.44pC
The sign is minus since they attracted to each other
Which type of graph most clearly show how a part or percentage relate to the whole
Circle graph is the type of graph which most clearly shows the part or percentage related to the whole.
Explanation:
Graphs are the easiest tool to show the change in a given dependent variable with respect to independent variable. The influence or the effects will be seen in the graphs.
There are different kinds of graph like circle graph, bar graph, line graph. Each of these have their own method of showing the change in the dependent variable. Among them, circle graph is the one which will help to show the percentage of each variable related to the whole.
The circle graph, or pie chart, excels in highlighting proportional relationships within a dataset. Its circular format provides an intuitive view of component distribution and significance. Here option C is correct.
A circle graph, also known as a pie chart, is particularly effective in illustrating the proportional relationship between individual components and the entire set. Graphs serve as a valuable tool for visualizing the fluctuations of a dependent variable in relation to an independent one.
Various types of graphs, such as bar graphs, line graphs, and circle graphs, offer distinct approaches to representing these changes. Among these options, the circle graph stands out for its ability to clearly depict the percentage contribution of each variable relative to the whole.
Its circular format allows for an intuitive understanding of the distribution and relative significance of different components within the dataset. By utilizing this visual representation, one can easily grasp the relative importance of each element and how they collectively constitute the entirety of the data. Here option C is correct.
Complete question:
Which type of graph is particularly effective in illustrating the proportional relationship between individual components and the entire set?
A) Bar graph
B) Line graph
C) Circle graph (Pie chart)
D) Scatter plot
To learn more about pie chart
https://brainly.com/question/26851221
#SPJ12
Which optical instrument, a telescope, a microscope, or a camera, forms images in a way most like your eye? Explain.
Camera is an optical instrument that forms images in a way most like human eyes.
Explanation:
The eye consists of a small spherical globe of about 2 cm in diameter, which is free to rotate under the control of 6 extrinsic muscles. Light enters the eye through the transparent cornea, passes through the aqueous humor, the lens, and the vitreous humor, where it finally forms an image on the retina.
In case of a digital camera, CCD is used known as charged coupled device. CCD is actually in the shape of array or a rectangular grid. It is like a matrix with each cell in the matrix contains a censor that senses the intensity of photon. When light falls on the object , the light reflects back after striking the object and allowed to enter inside the camera which is then stored by CCD in the form of electric signals.
Similarities between eye and a camera:
Cornea and Lens - The cornea is the “cap” of the eye. This transparent (like clear jelly) structure sits to the front of the eye. The lens of a camera is also transparent (glass) and sits at the front of the body. Both allows light to enter and have spherical curvature.
Iris and aperture -The aperture is to the camera as the iris is to the eye. Both control the amount of light allowed to enter the eye or camera.
Retina and Film - The retina sits at the back of the eye and collects the light reflected from the surrounding environment to form the image. The same task in the camera is performed either by film or sensors in digital cameras.
Keywords: eye, camera, CCD, iris, film, aperture, cornea, lens, image formation
Learn more about camera from https://brainly.com/question/1771913
#learnwithBrainly
A microscope forms images most similar to the eye due to the use of lenses and focusing techniques.
A microscope forms images in a way most like your eye. Both the eye and the microscope utilize lenses to form images. The method of focusing in the eye, through changes in the curvature of a lens, differs slightly from most optical instruments but is more similar to how a microscope forms images.
A 3.00 watt electric motor is plugged into an electrical outlet It takes the motor 30 00 seconds to lift a mass of 254.9 g a distance of
10.00 cm. In that time, the motor has used 90.00 J of energy Assuming no energy leaves the system, how much heat has been
added to the system by the end of those 30 seconds?
Answer:
89.75 J
Explanation:
The motor uses 90.00 J of electrical energy. Any of that energy that isn't used to do work is converted to heat.
The amount of work done is:
W = mgh
W = (0.2549 kg) (9.81 m/s²) (0.1000 m)
W = 0.2501 J
So the heat generated is:
Q = 90.00 J − 0.2501 J
Q = 89.75 J
If the difference in electronegativity values between two atoms is more than 2.0, nonpolar covalent bonds generally form.
ITS FALSE
A figure skater in a tight spin has a rotational inertia of 5.6kgm^2, and an angular velocity of 16 rad/s a) What is her angular momentum? b) what was her angular velocity when she went into the spin if her rotational inertia was 9.8kgm^2 before she tucked?
The angular momentum is 89.6 kg-m^2/s.
The angular velocity is 9.142 rad/s.
Explanation:
Momentum is the product of rotational inertia to the angular velocity.
Angular momentum = m *v = 5.6 * 16 = 89.6 kg-m^2 / s.
Angular velocity is the rate of velocity at which an object is rotating around a center or a specific point in a given time period. It is also known as rotational velocity. Angular velocity is measured in radian per second (rad/s).
angular velocity = angular momentum / rotational inertia
= 89.6 / 9.8 = 9.142 rad / s.
The mass of the Sun is 1.99 % 1030 kg. Jupiter is 7.79 * 108
km away from the Sun and has a mass of 1.90 X 1027 kg.
The gravitational force between the Sun and Jupiter to
three significant figures is
X 104 N.
Answer:
Force = [tex]4.16\times 10^{29}\ N[/tex]
Explanation:
Given:
Mass of Sun (M) = [tex]1.99\times 10^{30}\ kg[/tex]
mass of Jupiter (m) = [tex]7.79\times 10^8\ kg[/tex]
Distance between Sun and Jupiter (d) = [tex]1.90\times 10^{27}\ kg[/tex]
The gravitational force between the two is given as:
[tex]F_g=\frac{GMm}{d^2}[/tex]
Where, [tex]G=6.674\times 10^{-11}\ m^3 kg^{-1} s^{-2}[/tex]
Now, plug in all the given values and solve for [tex]F_g[/tex]. This gives,
[tex]F_g=\frac{6.674\times 10^{-11}\times 1.99\times 10^{30}\times1.90\times 10^{27} }{(7.79\times 10^8)^2}\\\\F_g=4.16\times 10^{29}\ N[/tex]
Therefore, the gravitational force between the Sun and Jupiter to three significant figures is [tex]4.16\times 10^{29}\ N[/tex]
Answer:
C. 4.16
Explanation:
Right on ED2021
50 points !! I need help asap.......Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. It falls to the ground. Think about the amounts of potential and kinetic energy the bowling ball has:
• as it sits on top of a building that is 40 meters tall.
• as it is half way through a fall off a building that is 40 meters tall and travelling 19.8 meters per second.
• as it is just about to hit the ground from a fall off a building that is 40 meters tall and travelling 28 meters per second.
1. Does the bowling ball have more potential energy or kinetic energy as it sit on top of the building? Why?
Answer:
2. Does the bowling ball have more potential energy or kinetic energy as it is half way through its fall? Why?
Answer:
3. Does the bowling ball have more potential energy or kinetic energy just before it hits the ground? Why?
Answer:
4. What is the potential energy of the bowling ball as it sits on top of the building?
Answer:
5. What is the potential energy of the ball as it is half way through the fall, 20 meters high?
Answer:
6. What is the kinetic energy of the ball as it is half way through the fall?
Answer:
7. What is the kinetic energy of the ball just before it hits the ground?
Answer:
1) At the top of the building, the ball has more potential energy
2) When the ball is halfway through the fall, the potential energy and the kinetic energy are equal
3) Before hitting the ground, the ball has more kinetic energy
4) The potential energy at the top of the building is 784 J
5) The potential energy halfway through the fall is 392 J
6) The kinetic energy halfway through the fall is 392 J
7) The kinetic energy just before hitting the ground is 784 J
Explanation:
1)
The potential energy of an object is given by
[tex]PE=mgh[/tex]
where
m is the mass
g is the acceleration of gravity
h is the height relative to the ground
While the kinetic energy is given by
[tex]KE=\frac{1}{2}mv^2[/tex]
where v is the speed of the object
When the ball is sitting on the top of the building, we have
[tex]h=40 m[/tex], therefore the potential energy is not zero[tex]v=0[/tex], since the ball is at rest, therefore the kinetic energy is zeroThis means that the ball has more potential energy than kinetic energy.
2)
When the ball is halfway through the fall, the height is
[tex]h=20 m[/tex]
So, half of its initial height. This also means that the potential energy is now half of the potential energy at the top (because potential energy is directly proportional to the height).
The total mechanical energy of the ball, which is conserved, is the sum of potential and kinetic energy:
[tex]E=PE+KE=const.[/tex]
At the top of the building,
[tex]E=PE_{top}[/tex]
While halfway through the fall,
[tex]PE_{half}=\frac{PE_{top}}{2}=\frac{E}{2}[/tex]
And the mechanical energy is
[tex]E=PE_{half} + KE_{half} = \frac{PE_{top}}{2}+KE_{half}=\frac{E}{2}+KE_{half}[/tex]
which means
[tex]KE_{half}=\frac{E}{2}[/tex]
So, when the ball is halfway through the fall, the potential energy and the kinetic energy are equal, and they are both half of the total energy.
3)
Just before the ball hits the ground, the situation is the following:
The height of the ball relative to the ground is now zero: [tex]h=0[/tex]. This means that the potential energy of the ball is zero: [tex]PE=0[/tex]The kinetic energy, instead, is not zero: in fact, the ball has gained speed during the fall, so [tex]v\neq 0[/tex], and therefore the kinetic energy is not zeroTherefore, just before the ball hits the ground, it has more kinetic energy than potential energy.
4)
The potential energy of the ball as it sits on top of the building is given by
[tex]PE=mgh[/tex]
where:
m = 2 kg is the mass of the ball
[tex]g=9.8 m/s^2[/tex] is the acceleration of gravity
h = 40 m is the height of the building, where the ball is located
Substituting the values, we find the potential energy of the ball at the top of the building:
[tex]PE=(2)(9.8)(40)=784 J[/tex]
5)
The potential energy of the ball as it is halfway through the fall is given by
[tex]PE=mgh[/tex]
where:
m = 2 kg is the mass of the ball
[tex]g=9.8 m/s^2[/tex] is the acceleration of gravity
h = 20 m is the height of the ball relative to the ground
Substituting the values, we find the potential energy of the ball halfway through the fall:
[tex]PE=(2)(9.8)(20)=392 J[/tex]
6)
The kinetic energy of the ball halfway through the fall is given by
[tex]KE=\frac{1}{2}mv^2[/tex]
where
m = 2 kg is the mass of the ball
v = 19.8 m/s is the speed of the ball when it is halfway through the fall
Substituting the values into the equation, we find the kinetic energy of the ball when it is halfway through the fall:
[tex]KE=\frac{1}{2}(2)(19.8)^2=392 J[/tex]
We notice that halfway through the fall, half of the initial potential energy has converted into kinetic energy.
7)
The kinetic energy of the ball just before hitting the ground is given by
[tex]KE=\frac{1}{2}mv^2[/tex]
where:
m = 2 kg is the mass of the ball
v = 28 m/s is the speed of the ball just before hitting the ground
Substituting the values into the equation, we find the kinetic energy of the ball just before hitting the ground:
[tex]KE=\frac{1}{2}(2)(28)^2=784 J[/tex]
We notice that when the ball is about to hit the ground, all the potential energy has converted into kinetic energy.
Learn more about kinetic and potential energy:
brainly.com/question/6536722
brainly.com/question/1198647
brainly.com/question/10770261
#LearnwithBrainly
Answer:
Quest ions
(Score for Question 1: ___ of 7 points)
1. Does the bowling ball have more potential energy or kinetic energy as it sit on top of the building? Why?
Answer: The bowling ball has more potential energy as it sits on top of the building because the force necessary to take the object from greater height will be more than from a lower height. Potential energy is stored energy, so when an object's height changes, its potential falls and becomes lower.
(Score for Question 2: ___ of 7 points)
2. Does the bowling ball have more potential energy or kinetic energy as it is half way through its fall? Why?
Answer: The potential and kinetic energy are the same as it is half way through its fall. The height is 20m half way through the fall, that also means that the potential energy is half of when the ball was at the top of the building.
E= PE + KE,
E= PE at the top,
E= PE half way + KE half way = PE at the top / 2 + KE half way = E / 2 + KE half way,
PE half way= PE at the top / 2 = KE half way = E / 2,
So when the ball is half way the kinetic energy and potential energy are equal, and each is half of the total energy.
(Score for Question 3: ___ of 7 points)
3. Does the bowling ball have more potential energy or kinetic energy just before it hits the ground? Why?
Answer: The bowling ball has more kinetic energy just before it hits the ground because it’s moving faster, and the faster something moves, the more kinetic energy it has.
(Score for Question 4: ___ of 4 points)
4. What is the potential energy of the bowling ball as it sits on top of the building?
Answer:
PE= mgh
Given:
mass= 2 kg,
gravity= 9.8m/s2,
height (where it’s located) = 40m,
PE= (2) (9.8) (40) = 748J
(Score for Question 5: ___ of 4 points)
5. What is the potential energy of the ball as it is half way through the fall, 20 meters high?
Answer:
PE= mgh
Given:
mass= 2 kg,
gravity= 9.8m/s2,
height (where it’s located) = 20m,
PE= (2) (9.8) (20) = 392J
(Score for Question 6: ___ of 3 points)
6. What is the kinetic energy of the ball as it is half way through the fall?
Answer:
KE= ½mv2
Given:
m= 2kg
v (the speed of the ball when it is halfway through the fall) = 19.8m/s
KE= ½ (2) (19.8)2 = 392J
(Score for Question 7: ___ of 3 points)
7. What is the kinetic energy of the ball just before it hits the ground?
Answer:
KE= ½mv2
Given:
m= 2kg
v (the speed of the ball when it is halfway through the fall) = 28m/s
KE= ½ (2) (28)2 = 784J