Question

1- A mystery material is initially at 15°C. A total of 86 cal of heat is added to the material, changing its temperature to 61°C. If this material has a mass of 159 g, what must be the specific heat capacity of the material?

(In cal/g·C°)

2- Is it possible for there to be a system where heat is added to a gas, but the gas maintains a constant temperature?

3- Two identical conducting spheres on insulating stands each initially have a different charge. One sphere has a charge of 4 mC. The other has a charge of -641 mC. If the two spheres were touched together and separated, what would be the final charge on each sphere (in mC)?

4- Two charged particles exert an electrostatic force of 30 N on each other. If they were moved so they were 0.4 times the distance apart, what force would they now be exerting on each other?

5- A test charge of 62 mC experiences a force of 1.9 N toward the left due to a nearby charge and a second force of 10.8 N toward the right due to a second charge. What is the electric field at the point where the test charge is located?

6- Which of the following are types of electric charge? Select all that apply.

	A.	Insulator
	B.	Attract
	C.	Positive
	D.	Negative
	E.	Repel
	F.	Pith

7- If the distance between two charged particles is increased to three times the original distance between them, then the electrostatic force the particles experience:

	A.	is reduced to one-third of the original force.
	B.	is reduced to one-ninth of the original force.
	C.	is increased to nine times the original force.
	D.	is increased to three times the original force

Answer 1