**Answer:**

W = 2.74 J

**Explanation:**

The work done by the charge on the origin to the moving charge is equal to the difference in the potential energy of the charges.

This is the electrostatic equivalent of the work-energy theorem.

where the potential energy is defined as follows

Let's first calculate the distance 'r' for both positions.

Now, we can calculate the potential energies for both positions.

Finally, the total work done on the moving particle can be calculated.

**Answer:**

581 kJ, work was done by the system

**Explanation:**

According to the first law of thermodynamics:

where

is the change in internal energy of the system

Q is the heat absorbed by the system (positive if absorbed, negative if released)

W is the work done by the system (positive if done by the system, negative if done by the surrounding)

In this problem,

Therefore the work done by the system is

And the positive sign means the work is done BY the system.

**Answer:**

**0.066m**

**Explanation:**

Step one:

given

frequency =512 Hz

The speed of sound is 340.0 m/s.

Required

The wavelength

Step two:

the formula for wavelength is

substitute the given data

**Answer:**

Convergent boundaries,over time,a rift valley will form.

**Explanation:**

The picture shows 2 plates moving apart,and a shallow "valley"is also noticeable.

Mark me brainliest if I helped:D