Answer:
B. C + O2 ------> CO2
Explanation:
i took the test
The fastest plane ever made, the Lockheed SR71, was able to travel 2200 miles per hour. Based on this speed, how far can it travel in 2 hours, 3 hours, and 5 hours?
The distance traveled by the plane in 2 hours, 3 hours, and 5 hours are:
4400 miles6600 miles11000 milesWhat is speed?Speed is the distance travelled per unit. Mathematically, it can be expressed as:
Speed = distance / time
How to determine the distance in 2 hoursSpeed = 2200 mphTime = 2 hDistance =?Distance = speed × time
Distance = 2200 × 2
Distance = 4400 miles
How to determine the distance in 3 hoursSpeed = 2200 mphTime = 3 hDistance =?Distance = speed × time
Distance = 2200 × 3
Distance = 6600 miles
How to determine the distance in 5 hoursSpeed = 2200 mphTime = 5 hDistance =?Distance = speed × time
Distance = 2200 × 5
Distance = 11000 miles
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A truck accelerates at 5m/s2. Find the truck's mass if the driver applies a force of 425N(can you also show free diagram)?
When analyzing the results of a scientific experiment, Kevin should base his conclusion on
Answer:
the empirical evidence that is collected during experiment.
Explanation:
When analyzing the result of any scientific experiment, we should base our conclusion on the evidences during process of the experiment. Because conclusion of any experiment describe the important things we noticed during experiment and all such steps are combined and give us the result of experiment. so Kevin should base his conclusion on the empirical evidences during experiment.
is the following sentence true or false.. winds blowing inland from oceans carry less water than winds blowing from land
What makes silver and gold different by using the terms atom and element
The difference between silver and gold is that they are different elements with different atoms.
An atom is the smallest unit of matter that retains all the properties of an element. Gold atoms cannot be broken down into anything smaller while still retaining the properties of gold.
An atom is the smallest unit of matter that retains all of the chemical properties of an element. Gold atoms cannot be broken down into anything smaller while still retaining the properties of gold. Gold is classified as an element, which means it is a substance composed of only one type of atom.
Which term describes the relationship between wax and wane
The term that describes the relationship between wax and wane is "phases." Waxing and waning refer specifically to the phases of the Moon.
The term that describes the relationship between wax and wane is "phases." Waxing and waning refer specifically to the phases of the Moon. The Moon goes through a repeating cycle of phases, transitioning from a new moon (not visible) to a waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and finally waning crescent before returning to a new moon again.
Waxing describes the Moon's illumination increasing while waning describes the Moon's illumination decreasing.
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20 POINTS!!!!
What Rock Would You Be?
Over time, rocks transform from one type to another through the geological processes that occur on Earth. Consider this fact as you read and respond to this lesson's discussion prompts.
Imagine that you are a rock. What type of rock would you be and where would you be located—for example, would you be deep within the Earth or on the surface?
What were you like before you became the rock you are now and what type of rock will you be in the future?
Be sure to describe the processes involved in the changes you have gone through to get to where you are now, as well as the changes you will undergo as you change your rock type again.
Look at Tyler's post:
I am a piece of a sedimentary rock sitting here in the crust. I used to be a magnificent metamorphic rock, but over time, I was weathered down to small pieces by the wind. I became sediment and then was covered by other sediments. In time, I was cemented together with these sediments as they pushed against me with more and more pressure. As the rocks continue to pile on top of me, I will get pushed further underground. Eventually, I will melt and become igneous rock. I know this because it has happened before. It's all part of the rock cycle.
Metamorphism often occurs on two scales: contact and regional. Contact metamorphism occurs relatively locally, in areas adjacent to igneous intrusions or in areas that are in contact with hot water known as hydrothermal fluids.
Typically this kind of metamorphism is caused by moderate pressure and extreme heat that may last for a period of days to thousands of years. In cases of contact metamorphism, the most extreme metamorphism occurs at the contact point between the parent rock and the intrusive magma or hydrothermal fluid. The degree of metamorphism then decreases rapidly as distance from the heat source increases. Depending on the source, zones of contact metamorphism may range from a few millimeters to tens of meters.
In contrast to contact metamorphism, regional metamorphism occurs over much larger areas. In areas such as rising mountain ranges, large igneous intrusions can form and warp overlying strata increasing the pressures above the intrusion. Also the extreme heat and pressures caused by tectonic forces or deep burial will cause widespread metamorphism.
and here's a link(you cant report me because i took a picture of the link, so ha-ha)
What does the force diagram look like for a book at rest on a desk?
a player passes a basketball to another player who catches it at the same level from which it was thrown. the initial speed of the ball is 7.1m/s and it travels a distance of 4.6m. What were (a) the initial direction of the ball and (b) it's time of flight?
The basketball is thrown horizontally and the time of flight is approximately 0.648 seconds.
Explanation:In this problem, a basketball is passed from one player to another at the same level. The initial speed of the ball is 7.1 m/s and it travels a distance of 4.6 m. To determine the initial direction of the ball, we need to consider that the ball is caught at the same level from which it was thrown, meaning it has no vertical displacement. Therefore, the initial direction of the ball is horizontal.
To find the time of flight, we can use the equation:
time = distance / speed
Plugging in the values given:
time = 4.6 m / 7.1 m/s = 0.648 s
So, the time of flight of the ball is approximately 0.648 seconds.
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Scientific experiments are specially designed to test explanations for an observed phenomenon. A student decides to conduct an experiment to determine the effect that the amount of time spent in the sunlight has on the overall growth of a plant. The student will conduct the experiment using two identical plants that will only spend different amounts of time in the sunlight. All other aspects needed for growth will remain identical for each. In the experiment described, what would the amount of water given to each plant be considered? a. an observation b. a dependent variable c. an independent variable d. a control or constant
Answer:
D. a control or constant
Explanation:
Just took it
The amount of water given to each plant would be considered an independent variable. Therefore option C is correct.
An independent variable is a factor that the researcher deliberately manipulates or changes in an experiment to observe its effect on the dependent variable.
In this case, the independent variable is the amount of time spent in the sunlight. The researcher intentionally varies the exposure to sunlight between the two plants.
Therefore, the amount of water given to each plant is a control or constant, while the amount of time spent in the sunlight is the independent variable in this experiment.
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A package of supplies is to be dropped from an airplane so that it hits the ground at a designated spot near some campers. The airplane, moving horizontally at a constant velocity of 130 km/h, approaches the spot at an altitude of 0.520 km above level ground. Having the designated point in sight, the pilot prepares to drop the package. (a) What should the angle be between the horizontal and the pilot's line of sight to the drop point when the package is released? (Neglect air resistance)
a soccer ball is kicked with a speed of 15.6m/s at an angle of 32.5 degrees above the horizontal. If the ball lands at the same level from which it was kicked for what amount of time was it in the air?
Answer:
Time of flight, t = 1.71 seconds
Explanation:
It is given that,
Speed of the soccer ball, u = 15.6 m/s
Angle made with the horizontal, [tex]\theta=32.5^{\circ}[/tex]
Let t is the time for which the ball was in the air. The time duration for which the ball is in air is called the time of flight of the projectile. It is given by :
[tex]t=\dfrac{2u\ sin\theta}{g}[/tex]
[tex]t=\dfrac{2(15.6)\ sin(32.5)}{9.8}[/tex]
t = 1.71 seconds
So, the ball was in the air for 1.71 seconds. Hence, this is the required solution.
To find the amount of time the soccer ball was in the air, we can break the initial velocity of the ball into its horizontal and vertical components. The time in the air can be calculated using the vertical velocity component and the vertical distance traveled.
Explanation:To find the amount of time the soccer ball was in the air, we can break the initial velocity of the ball into its horizontal and vertical components. The horizontal component will remain constant throughout the motion, while the vertical component will change due to the force of gravity.
Using the initial velocity of 15.6 m/s and the angle of 32.5 degrees above the horizontal, we can find the vertical velocity component using trigonometry. The vertical velocity component is given by Vy = V * sin(θ), where Vy is the vertical velocity, V is the initial velocity, and θ is the angle above the horizontal.
With the vertical velocity component, we can calculate the time the ball was in the air by dividing the vertical distance it travels by the vertical velocity. Since the ball lands at the same level, the vertical distance can be assumed to be zero. Therefore, the time in the air is given by Δt = 2 * (Vy / g), where Δt is the time in the air, Vy is the vertical velocity component, and g is the acceleration due to gravity (approximately 9.8 m/s²).
explain why a fast moving freight train cannot be stopped quickly
The strength of the electric field of a charged particle becomes greater as the distance from the particle increases. True or false
The strength of the electric field of a charged particle becomes greater as the distance from the particle increases. this statement is False.
What is electric field ?Electric field is field around electrically charged particle where columbic force of attraction or repulsion can be experienced by other charged particles. It is denoted by letter E and it's SI unit is V/m Volt per meter or N/C newton per coulomb. Electric field comes inward to the center of the negative charge and it is going outward for positive charge. Electric field E is given by E = F/q where F is columbic force experienced by the unit charge.
Electric around a charge having magnitude q is given by
[tex]E = \frac{1}{4\pi r^{2} } \frac{q}{r^{2} }[/tex] where r is the distance from the center of the charge.
from formula we can see that as distance increases electric field decreases because electric field is inverse function of distance r.
Hence above statement is false.
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Emily sprains her ankle on her way home from school. Her mom suggests she use an “instant cold pack” to reduce the swelling. When Emily’s mom hands her the cold pack, it is room temperature. The instructions on the pack tell Emily to pop a button inside the ice pack to open a packet of chemicals. Once Emily has popped the button, she notices that the cold pack immediately gets cold. She places it on her swollen ankle. Write a thoughtful and complete response (3+ sentences) that describes what happened to the energy as it is first in the cold pack (before Emily pops the button), then when she pushes the button, and then after Emily has placed the cold pack on her ankle. Discuss transfers and transformations of the energy.
Why is it more important to monitor your word choice in a professional environment
which factor has the least impact on the potential energy or kinetic energy of an object
Select all that apply. The three types of rock in the Earth's crust are _____.
igneous
basalt
limestone
granite
metamorphic
sedimentary
Final answer:
The Earth's crust is composed of igneous, metamorphic, and sedimentary rocks, examples of which include granite (igneous), basalt (igneous), and limestone (sedimentary).
Explanation:
The three types of rock in the Earth's crust are igneous, metamorphic, and sedimentary. Igneous rocks, like granite and basalt, form when magma or lava cools and solidifies. Sedimentary rocks form from the compaction and cementation of various substances, including pre-existing rock fragments or mineral precipitation. Limestone is an example of a sedimentary rock formed from precipitated minerals. Metamorphic rocks arise from the transformation of existing rock types through heat and pressure, resulting in a change in mineral composition or structure.
If the amplitude of the resultant wave is twice as great as the amplitude of either component wave, and this wave exhibits reinforcement, the component waves must
A. have a different frequency than the resultant wave.
B. be in phase with each other.
C. be traveling in the opposite direction of the resultant wave.
D. have a different wavelength than the resultant wave.
Answer: B-be in phase with each other
If the amplitude of the resultant wave is twice as great as the amplitude of either component wave, and if this wave exhibits reinforcement, the component waves must be in phase with each other.e
which is an element A. titanium and carbon in an alloy B. oxygen and nitrogen joined together C. a water molecule D. a piece of pure nickel
ps its science
A dog is sniffing around for a bone. He walks 3.6 m east and 6.0 m north. What are the magnitude and direction of the dog from his original position?
What building material did you use to build your house? Did your results support or fail to support your hypotheses?
Answer:
Wood Cement base boards
Explanation:
The building material which is required to build our house is cement, wood, and pillars.
Which building material?
Building materials are required to build a house. Wood, aggregates, and cement are some examples of building materials. Some natural materials are the clay, sand and rocks are some of the examples of building materials.
Types of construction materials are:
Natural construction material.FabricMud and clay.Rock BrushMetalConcrete.Plastic pipes and metal pillars are required to build a building. The process of building is called construction. If the building materials are good the quality and durability of houses increases.
Therefore, The building material which is required to build our house is cement, wood, and pillars.
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Julie is an amateur astronomer. Using her telescope, she observes a planet that has large rings with beige and reddish bands. What is Julie most likely observing?
a solid inner planet
a gaseous outer planet
a gaseous inner planet
a solid outer planet
A gaseous outer planet. It has rings so she is most likely looking at Saturn which is a gaseous outer planet with rings.
a substance that contains only one kind of matter is known as a (n)
If this experiment is repeated at a place 10 kilometers above the sea-level, the acceleration due to gravity g (exp) is expected to:
a. increase.
b. decrease.
c. remain constant.
The acceleration due to gravity, or g (exp), will decrease if the experiment is conducted 10 kilometers above sea level. This is because the force of gravity reduces as you move further from the Earth's surface.
Explanation:The acceleration due to gravity, or g (exp), is expected to decrease if the experiment is repeated at a place 10 kilometers above the sea-level. This is because the force of gravity decreases as the distance from the center of the Earth increases.
Essentially, the further you move away from the Earth's surface, the weaker the gravitational force gets. This is due to the fact that gravity is dependent on distance. So, being 10 kilometers above sea level would result in a slightly lower acceleration due to gravity.
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An atom with an atomic number of 12 and a mass number of 25 can best be described by which of these?
A) An atom that contains 12 protons and 13 neutrons.
B) An atom that contains 13 protons and 12 neutrons.
C) An atom that contains 12 protons and 25 neutrons.
D) An atom that contains 25 protons and 12 neutrons.
Answer:The awnser is A
Explanation:
Just did the test
Which of the following elements has the highest atomic mass?
1. Helium: 2 protons and 2 neutrons
2. Nitrogen: 7 protons and 7 neutrons
3. Oxygen: 8 protons and 8 neutrons
4. hydrogen: 1 proton and no neutrons
Answer:
Oxygen has the highest atomic mass out of all the four elements.
How are galaxies organized and distributed within the universe
Answer:
The answer is: Many are associated in pairs, trios, groups or clusters, and their distribution in filamentary structures.
Explanation:
Galaxies rarely appear isolated and their distribution in the Universe is not uniform. Many are associated in pairs, trios, groups of some tens or clusters of up to a few thousand. These groups are held together by gravitation.
The large-scale distribution of galaxies seems to indicate that they are concentrated along large filamentary structures.
The answer is: Many are associated in pairs, trios, groups or clusters, and their distribution in filamentary structures.
The fastest speed in the universe is the ____________ _____ ______________.
During an investigation, a scientist heated 123.6 g of copper carbonate till it decomposed to form a black residue. The total mass of the black residue formed was 79.6 g. Does the law of conservation of mass hold true in this case?
Answer:
When copper carbonate is heated, it decomposes to form a black residue. This black residue is actually copper(II) oxide. Along with this black residue, carbon-dioxide is released.
The law of conservation of mass holds true. 123.6 g of copper carbonate decomposes to 79.6 g of copper oxide and (123.6 g-79.6 g=44 g) 44 g of carbon-dioxide.