A 10.0-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.300 Ω . Pulling the wire at a steady speed of 4.00 m/s causes 3.90 W of power to be dissipated in the circuit.

Answer:

- decreases

- inverse proportionality

- 1 A

Explanation:

Just take my word for it lol:)

Answer:

what the other guy said

Explanation:

its right trust me

Answer:

v = 1.25 m/s

Explanation:

We have,

Distance covered by a person is 10 meters

Time taken by him to cover that distance is 8 seconds.

If we want to find the speed of a person, we must know distance covered by it and taken. In this case, we know both distance and time. His speed is given by :

[tex]v=\dfrac{d}{t}\\\\v=\dfrac{10\ m}{8\ s}\\\\v=1.25\ m/s[/tex]

So, the speed of the person is 1.25 m/s.

Answer:

The sum of all the forces acting on an object is the net force or resultant force. ... For example, gravitational force (on earth) acts in downward direction and has a magnitude equal to mass of the object and acceleration due to gravity.

Explanation:

The sum of all forces is described by "Net force".

→ [tex]F_{NET} = F_1+F_2+...+F_N[/tex]

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Answer:

1.94 * 10^8 m/s

Explanation:

as n= c/v

so v = c/n where c is the speed of light in vacuum so

v = 3 * 10^8 / 1.54 = 1.94 * 10^8

Final answer:

The speed of light in halite, or rock salt, with an index of refraction of 1.54, is approximately 1.95 x 10⁸ meters per second, calculated using the formula for the speed of light in a material based on its index of refraction.

Explanation:

The question asked is about determining the speed of light in a mineral known as halite, or rock salt, which has an index of refraction of 1.54. The index of refraction is the ratio of the speed of light in a vacuum to the speed of light in the material. To find the speed of light in halite, we can use the formula:

Speed of Light in Mineral = Speed of Light in Vacuum / Index of Refraction

Given that the speed of light in a vacuum is approximately 3.00 x 10⁸ m/s, we can substitute the values into the equation:

Speed of Light in Halite = 3.00 x 10⁸ m/s / 1.54

This gives us a speed of approximately 1.95 x 10⁸ m/s. Therefore, the speed of light in halite, or rock salt, is around 1.95 x 10⁸ meters per second.

Answer:

Reflection of Light. When light waves are incident on a smooth, flat surface, they reflect away from the surface at the same angle as they arrive. ... Regardless of whether light is acting as particles or waves, however, the result of reflection is the same.

Answer:

B

Explanation:

They are the BASE elements. Cannot make them any simpler.

Answer:

Explanation:

Current in a wire is 120mA

I = 120mA = 120 × 10^-3 A

I = 0.12 A

If the voltage applied at across the wire is tripled

From ohms law

V=IR

R = V / I

Since R is constant

Then,

V / I = K

Then, we can say

V / I = V' / I'

Given that,

Initially

V = V and I = 120mA

Then, V' = 3V and I' =?

So,

V / I = V' / I'

V / 120 = 3V / I'

Cross multiply

V × I' = 120 × 3V

Divide both sides by V

I' = 120 × 3V / V

I' = 360mA

So, the current in the wire when the voltage was tripled is 360mA, the current was also tripled

If the voltage in a circuit is tripled while the resistance remains unchanged, according to Ohm's Law, the new current will be triple the original, resulting in a new current of 0.36 amps.

The question deals with electrical current in a circuit, and specifically what happens to the current if the voltage across the circuit is changed. According to Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), I = V/R, the current in a circuit will increase if the voltage is increased and the resistance remains constant. Given that the original current is 120.0 milliamps, if the voltage is tripled and the resistance remains unchanged, the new current will be 120.0 mA x 3, which equals 360.0 milliamps or 0.36 amps.

Answer:

Force, [tex]F=9.21\times 10^{-24}\ N[/tex]

Explanation:

Charge on proton is [tex]+1.6\times 10^{-19}\ C[/tex].

The electrical force between charges is given by the product of charges and divided by square of distance between them. So, electric force is :

[tex]F=\dfrac{kq^2}{r^2}\\\\F=\dfrac{9\times 10^9\times (1.6\times 10^{-19})^2}{(0.00500 )^2}\\\\F=9.21\times 10^{-24}\ N[/tex]

So, force between protons is [tex]9.21\times 10^{-24}\ N[/tex].

Answer:

Density of iron is higher than the density of oxygen because of difference in particles arrangement in a matter.

Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. Therefore, because of differences in particle arrangement in a substance, the density of iron is greater than that of oxygen.

Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water.

Mathematically,

Density = Mass of the metal ball ÷volume marked on the graduated cylinder

Because of differences in particle arrangement in a substance, the density of iron is greater than that of oxygen.

Therefore, because of differences in particle arrangement in a substance, the density of iron is greater than that of oxygen.

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Answer:

Electric power

Explanation:

Electric power is the rate at which electrical energy is converted to or from another form of energy, such as heat or light. The ratio of power to current is called the voltage.

Hope this helps!!!!!!!!!!!!!!

Forever friend and helper,

Cammie:)

Electric power is the rate at which electrical energy is converted into other forms of energy.

Electrical energy is the energy derived from electric potential energy or kinetic energy of the charged particles.

Specific examples of electrical energy include:

Electric power is the rate at which work is done or energy is transformed into an electrical circuit. Electric power is measured in watts.

[tex]P = VI[/tex]

Where,

[tex]P[/tex] is the power

[tex]V[/tex] is the potential difference in the circuit.

[tex]I[/tex] is the electric current.

It can also be expressed as

[tex]P = I^{2}R[/tex]

Electric power is the scalar quantity.

Thus, it can be concluded that the rate at which electrical energy is converted into other forms of energy is called electric power.

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Answer:

Fill the cup with water

Add a handle to the cup

Explanation:

The potential energy is the energy possessed by a body by virtue of it position.

If the body has a mass of m, a height h Meters above the ground

PE= mgh

Hence

1. Fill the cup with water will increase potential energy since we are also increasing mass and weight

2. We can also see that adding a handle to cup increases The Masss of the cup, this also increases the potential energy.

The actions that could increased the potential energy is

The following information should be considered:

So,  

PE= mgh

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Answer:

A.

collect samples.

Explanation:

The main goal of science is to gain knowledge about the natural world, but this goal is nearly impossible to achieve without technology.

Technologies are products or processes that are created to solve a problem and/or take care of a human need. Technology is often used in science to collect samples, make measurements, collect and store data, analyze data through computations and graphing, and access remote locations, such as outer space.

PLEASE DON'T HESITATE TO GIVE BRAINLIEST AND/OR A THANKS!

Answer: Option A

Explanation:

It is correct

Answer:

Mercury and Venus

Explanation:

Answer: Mercury and Venus

Explanation:The outer Solar System includes Jupiter, Saturn, Uranus, Neptune and Pluto and the rest of the moons.

Answer:

Option A. 10 degrees

Explanation:

When a charged particle is placed magnetic field, it will possess magnetic force. The force acting on the particle is given by :

[tex]F=ilB\sin\theta[/tex]

i and l are current and length of wire

Here,

[tex]\theta[/tex] is the angle between velocity and magnetic field.

The force is minimum when the value of [tex]\sin\theta[/tex] is minimum.

[tex]\sin(10)=0.17\\\\\sin(30)=0.5\\\\\sin(45)=0.707\\\\\sin(90)=1[/tex]

It is clear that the value of sin(10) is minimum out of all other angles. So, the force on a current-carrying wire is minimum when the current is moving at what angle of 10 degrees to the magnetic field

The force on a current-carrying wire is minimum when the current is at a 90-degree angle to the magnetic field because the sine of 90 degrees is zero, resulting in zero force.

The force on a current-carrying wire is minimum when the current is moving at a 90-degree angle to the magnetic field. This is because the force on a wire within a magnetic field is given by the equation F = IlB sin( heta), where F is the force, I is the current, l is the length of the wire, B is the magnetic field strength, and heta is the angle between the direction of the current and the magnetic field. Since the sine function reaches its minimum value at heta = 90 degrees or heta = 270 degrees, which corresponds to sine values of 0, the force is minimum at these angles.

Answer:

the answer is b

Explanation:

Answer:

b

Explanation:

Answer:

Using formula: P = I^2 x R, we have:

P = 1.5^2 x 1.26 = 2.835 W

Hope this helps!

:)

Answer:

2.835 Watts

Explanation:

P = I²R

P = 1.5² × 1.26

P = 2.835 Watts

Answer:

last option is the correct one

Answer:

D. Each will reflect at an angle equal to its angle of incidence.

Explanation:

Explanation:

We have,

Savannah drove 716 miles on Monday and She drove another 572 miles on Tuesday.

It is required to find the total distance covered by her altogether. It is equal to the sum of distance covered on Monday and distance covered on Tuesday. So,

d = 716 miles + 572 miles

d = 1288 miles

So, she drive 1288 miles altogether.

Answer:

These fields have electric and magnetic energy, therefore the light wave carries energy.

it does not transport matter

Explanation:

Light is an electromagnetic wave formed by the oscillation of electric and magnetic fields.

These fields have electric and magnetic energy, therefore the light wave carries energy.

But the wave does not need matter for its movement, which is why it transports matter. If we use the criterion of special relativity the mass of a light wave that travels at speed must be zero, so with this criterion it does not transport matter either

Final answer:

A light wave reflected from the Moon to Earth carries energy in the form of light and momentum, but it does not carry matter.

Explanation:

When a light wave strikes the moon and is reflected towards Earth, it carries energy but not matter. Light interacts with matter by reflecting, transmitting, or being absorbed, which may convert it into other forms of energy like heat. However, light itself is a form of energy and does not carry matter. The moon reflects sunlight, which then travels to Earth, illuminating the moon phases we observe.

Since light carries momentum as well, the energy transfer occurs when light impacts matter, but the absence of mass means no matter is carried with the light waves as they travel from the Moon to Earth.

Answer:

There are 5 significant figures.

Explanation:

You must start conting your sig figs until you continue to hit zeros at the end. Those zeroes at the end are disregarded. So 0.0609 is where you get your sig figs from.

Answer:

The street is 133.7 m long.

Explanation:

It is given that,

Speed of the cat, v = 3.5 m/s

It took her 38.2 s to run the entire length of the street she lives on.

We need to find the length of the street. It means we need to find the distance covered by cat. Speed of cat is given by :

[tex]v=\dfrac{d}{t}\\\\d=vt\\\\d=3.5\times 38.2\\\\d=133.7\ m[/tex]

So, the street is 133.7 m long.

Answer:

soil and sand

Explanation:

hope it's helpful

Answer:

1. The equivalent resistance for the combination of resistors in series is equal to the algebraic sum of all its individual resistances.

2. The Current will increase and causes it to have less restriction.

Explanation:

I did the Exam and made a 100% with these answers.

Hope this Helps!!!

Answer:

1. The parallel circuits can depend on more than that of of individual resistances can. You have only six resistors available, and all of the resistors have a value of 10.0

2. The equivalent resistance of a set of resistors in a series connection is equal to the algebraic sum of the individual resistances. Figure 10.3. 2: (a) Three resistors connected in series to a voltage source. (b) The original circuit is reduced to an equivalent resistance and a voltage source

Explanation:

Answer:

The correct option is;

Rachael's motion energy is being turned into other types pf energy

Explanation:

Here we have Rachael pushing off from the wall to generate motion energy. The motion energy makes Rachael glide such that she is displaced while at the same time she overcomes resistances to the motion, (rolling) of the tires  from the ground as well as generates some audible noise and heat. These are all forms of energy that takes up the initial motion energy that Rachael had.

Final answer:

In Rachel's motion example, the key true statements are that her motion energy is being converted into other forms of energy and that friction from the ground is slowing her down. Energy conservation and friction are fundamental concepts in explaining her motion.

Explanation:

Rachel is wearing roller skates and is standing next to a wall. She pushes off from the wall and then glides to a stop. Let's examine which statements about Rachel's motion are true:

The image distance for an object placed 19 cm in front of a concave mirror with a focal length of 10 cm is approximately 27 cm.

The image distance for an object placed 19 cm in front of a concave spherical mirror with a focal length of 10 cm can be determined using the mirror equation: 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance. Plugging in the given values of f = 10 cm and do = 19 cm into the equation gives 1/10 = 1/19 + 1/di. Solving for di yields an image distance of approximately 27 cm. Therefore, the correct answer is 27 cm.

Explanation:

An explosion causes debris to rise vertically with an initial velocity of 144 feet per second. The height as a function of time t is given by :

[tex]s(t)=-16t^2+144t[/tex]

t is in time in seconds

The speed of the debris is :

[tex]\dfrac{ds}{dt}=\dfrac{d(-16t^2+144t)}{dt}\\\\\dfrac{ds}{dt}=v=-32t+144[/tex] .......(1)

When it hits the ground, the distance covered is equal to 0 i.e. s(t)=0

So,

[tex]-16t^2+144t=0\\\\t(-16t+144)=0\\\\16t=144\\\\t=\dfrac{144}{16}\\\\t=9\ s[/tex]

It means at 9 seconds it will hit the ground.

Put t = 9 s in equation (1). So,

[tex]v=-32(9)+144\\\\v=-144\ m/s[/tex]

So, the the instantaneous speed of the debris when it hits the​ ground is (-144 m/s).

Answer:

Because it turn to the next side or i should say in the back.

Explanation: