An electrical generator is an important component in a power plant. which best shows the energy transfer diagram for a generator

The answer is B

Explanation:

A generator produces electricity. Energy enters the system (generator) as kinetic energy. It is converted into electrical energy, which can run electrical appliances. Some energy is always wasted as heat and sound. Therefore, Choice B is the best answer.

B

Explanation:

it shows the best answer

56.25 N

Explanation:

Given,

Radius of the planet, r = 1000 km

Gravitational force, F = 100 N

Initial distance from the planet, d = 500 km

Final distance from the planet, D = 1000 km

Lets assume, mass of planet = M

mass of the object = m.

As per the gravitational law, the force due to gravity is given as

where, G = gravitational constant

R =  distance between the two objects.

Case 1: when the object is at a distance of 500 km from the planet,

Here, R = 1000 + 500 = 1500 km, so

Case 2: when the object is at a distance of 1000 km from the planet, so

now, R = 1000 + 1000 = 2000 km

Now the gravitational force, F' will be

Thus, the gravitational force will now be reduced to 56.25 N.