According to the second law of thermodynamics, energy tends to become more and more unavailable for conversion from:

Q-1; Units commonly used for entropy are:

1) kilograms per degree Kelvin

2) Joules per degree Kelvin

3) Newtons per Coulomb

4) ergs

ANSWER: 2 -- JOULES PER DEGREE KELVIN

Q-2;  The amount of heat required to change a boiling liquid to a gas at the same temperature depends on one of the following properties of the liquid. Does it depend on

the liquid's:

1) heat of fusion

2) heat of vaporization

3) temperature

4) density

ANSWER: 2 -- HEAT OF VAPORIZATION

Q-3;  According to the second law of thermodynamics, energy tends to become more and more unavailable for conversion from:

1) thermal to kinetic energy
2) kinetic to thermal energy
3) thermal to mechanical energy
4) mechanical to thermal energy
ANSWER: 3 -- THERMAL TO MECHANICAL ENERGY

Q-4;  When a charge moves through an electric circuit in the direction of an electric force it does one of the following four things. Does it:

1) lose potential energy and gain kinetic energy

2) gain potential energy and lose kinetic energy

3) lose both potential and kinetic energy

4) gain both potential and kinetic energy

ANSWER: 1 -- LOSE POTENTIAL ENERGY AND GAIN KINETIC ENERGY

Q5Which one of the following is the name of a device used to measure ltage without drawing ANY current from the circuit being measured? Is it:

1) a wattmeter
2) a galvanometer
3) an ammeter
4) a potentiometer
ANSWER: 4 -- A POTENTIOMETER

Q-6;  Lenz's law is an example of the law of conservation of one of the following. Is it conservation of:

1) mass
2) charge
3) momentum
4) energy
ANSWER: 4 -- ENERGY

Q-7;  After a projectile is fired horizontally near the earth's surface, the horizontal component of its velocity, neglecting any air resistance:

1) increases steadily
2) decreases steadily
3) first decreases, then increases
4) remains constant
ANSWER: 4 -- REMAINS CONSTANT

Q-8;  Two bodies are moving in circular paths of equal radii. If the speed of the first body is twice that of the second, the centripetal acceleration of the first body is how many times greater than that of the second body?
ANSWER: 4