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navik [9.2K]
3 years ago
13

How much work is done (by a battery, generator, or some other source of potential difference) in moving Avogadro's number of ele

ctrons from an initial point where the electric potential is 9.20 V to a point where the electric potential is -6.90 V
Physics
1 answer:
konstantin123 [22]3 years ago
5 0

Answer:

-1486 KJ

Explanation:

The work done by an electric field on a charged body is:

W = ΔV * q

where ΔV = change in voltage

q = total charge

The total charge of Avogadro's number of electrons is:

6.0221409 * 10^(23) * -1.6023 * 10^(-19) = -9.65 * 10^(4)

The change in voltage, ΔV, is:

9.20 - (6.90) = 15.4

Therefore, the work done is:

W = -9.65 * 10^(4) * 15.4 = -1.486 * 10^6 J = -1486 KJ

The negative sign means that the motion of the electrons is opposite the electrostatic force.

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Which of the following can significantly change a vehicle’s center of gravity?
Fittoniya [83]

Answer:

The answer is Loading

Explanation:

The center of gravity is a point inside a mass where the weight of the mass is considered to act on. And the center of gravity of an object can change position if you add more mass on certain areas of the object. So lets say you have a vehicle and the vehicle has the center of gravity right in the middle (this means at mid-height, mid-length and mid-width). Now you put some stuff on the trunk, well guess what? The center of gravity now shifted some towards the trunk of your car. And if you didn´t place the extra mass right in the middle of the trunk, the you also moved the center of gravity to whatever side you put the mass on.

In regards of the other three options:

  • Force of impact has nothing to do with center of gravity. Although if you want to be very strict, if you crash and the force of impact deforms your car so much that the vehicle has now a totally different shape, then yeah, all the rearrangement of the mass will move the center of gravity from its initial position. But for the scope of this question, the answer is NO.
  • The antilock brakes or ABS have nothing to do with center of gravity. All they do is prevent your car from sliding by keepin the tires rotating when you slam on the brakes.
  • Torque has nothing to do with center of gravity. More torque will help you with acceleration of your vehicle.
4 0
3 years ago
Read 2 more answers
The melting of a glacier is an example of the interactions among which of Earth’s spheres?
Anuta_ua [19.1K]
Atmosphere, geosphere, cryosphere would be the correct answer I think
4 0
3 years ago
When light hits the water droplets in a cloud, the cloud appears white. The light waves are being:
Tamiku [17]

Answer:

scattered

Explanation:

7 0
3 years ago
Question 11 of 11 | Page 11 of 11
KiRa [710]

Answer:

Decreases the time period of revolution

Explanation:

The time period of Cygnus X-1 orbiting a massive star is 5.6 days.

The orbital velocity of a planet is given by the formula,

                                        v = √[GM/(R + h)]

In the case of rotational motion, v = (R +h)ω

                                         ω = √[GM/(R + h)] /(R +h)

Where 'ω' is the angular velocity of the planet

The time period of rotational motion is,

                                     T = 2π/ω

By substitution,

                                      <em>T = 2π(R +h)√[(R + h)/GM] </em>

Hence, from the above equation, if the mass of the star is greater, the gravitational force between them is greater. This would reduce the time period of revolution of the planet.

3 0
3 years ago
Un alumno menciona que al abrir la ventana de su casa sintió cómo el frío ingresaba a su cuerpo. Menciona cuál es la verdadera r
stepan [7]

Answer:

My believe the answer is

A.) or B.)

Explanation:

Here is why I think A is the answer.

If we use the process of elimination, it would look like this,

a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.

<em>This makes sense because we all know in winter the weather is very cold and freezing.</em>

b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.

<em>I feel like this answer is the question, but it could also be an answer, sorry, I'm a little uncertain.</em>

c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.

<em>This answer has nothing to do with the question, plus it is very false, our body heat is not enough to overcome the very cold temperature from outside.</em>

d) Porque la temperatura del aire es igual a la temperatura del cuerpo.

<em>This is false because again our body heat is not even compared to the freezing cold temperatures from the winter.</em>

<em />

<em />

<h2>Well, have a nice rest of the day!</h2><h3>ba baiii!</h3>
3 0
3 years ago
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