If all the objects have around the same mass, which of the following objects has the most gravitational potential energy? Question 4 options:

a chair set on the ground

a book on a high shelf on the first floor of a house

a ball stuck on the roof of a two-story house

a cat investigating a basement

Question 5 (1 point)
Which of the following electromagnets would have the greatest magnetic field?

Question 5 options:

A

B

C

D

Question 6 (1 point)
What is the role of a turbine in an electric generator?

Question 6 options:

It stores energy for later use.

It releases chemical energy.

It transfers electrical energy.

It provides mechanical energy.

Question 7 (1 point)
Which energy transformation takes place in a generator?

Question 7 options:

mechanical to electrical

chemical to radiant

electrical to mechanical

radiant to electrical

Question 8 (1 point)
The rumble feature on a video game controller is driven by a device that turns electrical energy into mechanical energy. This device is best referred to as ?

Question 8 options:

an electric generator

an electromagnet

a solenoid

a motor