##### 1. Gibb’s free energy equation is directly related to ______ and _______.

- Work and Time
- Heat and Work
- Enthalpy and Entropy
- Power and Enthalpy

##### 2. Which of the following is correct expression for Gibbs’ free energy formula?

- DG = DH – TDS
- G = H – TS
- DG = DH – T/S
- G = H – T/S

##### 3. Which of the following is the correct expression of Bernoulli’s principle?

- As KE increases, another form of energy must decrease.
- As KE increases, other forms of energy also increase.
- KE remains relatively stable in a closed loop.
- KE has a limited effect upon wavelength.

##### 4. Which of the following is the correct expression for work?

- W = DKE
- W = K – DE
- W = K x DE
- W = DK / DE

##### 5. A spring has a spring constant of 120 newtons per meter. How much potential energy is stored in the spring as it is stretched .20 meter?

- 1.2 J
- 2.4 J
- 3.1 J
- 7.4 J

##### 6. A distance of 1.0 x 10^{3} separates the charge at the bottom of the cloud and the ground. The electric field intensity between the bottom of the cloud and the ground is 2..0 x 104 newtons per coulomb. What is the potential difference between the bottom of the cloud and the ground?

- 1.4 x 10
^{4}V - 2.5 x 10
^{3}V - 2.8 x 10
^{6}V - 2.0 x 10
^{7}V

##### 7. When Adam drinks cold water, his body warms the water until thermal equilibrium is reached. If he drinks six glasses (2.5 kilograms) of water at 0 degrees Celsius in a day, approximately how much energy must his body expend to raise the temperature of this water to his body’s temperature of 37 degrees Celsius?

- 210 kJ
- 305 kJ
- 390 kJ
- 414 kJ

##### 8. An electron is located between a pair of oppositely charged parallel plates. As the electron approaches the positively charged plate, the kinetic energy of the electron?

- Increases
- Decreases
- Remains the same
- Transforms into potential energy

##### 9. If the speed of a moving object is doubled, which quantity also associated with the object must double?

- Momentum
- KE
- Gravitational potential energy
- Acceleration

##### 10. A 45 kilogram bicyclist climbs a hill at a constant speed of 2.5 meters per second by applying an average force of 85 Newtons. Approximately how much power does the bicyclist develop?

- 115 W
- 210 W
- 250 W
- 320 W

##### 11. A person kicks in a 4.0 kilogram door with a 48 Newton force causing the door to accelerate at 12 meters per second^{2}. What is the magnitude of the force exerted by the door on the person?

- 24 N
- 35 N
- 42 N
- 48 N

##### 12. A 60 kilogram student running at 3.0 meters per second has a kinetic energy of ____.

- 111 J
- 151 J
- 260 J
- 270 J

##### 13. How much work is done in moving 5.0 coulombs of charge against a potential difference of 12 volts?

- 30 J
- 60 J
- 400 J
- 500 J

##### 14. Compared to insulators, metals are better conductors of electricity because metals contain more free _____.

- Protons
- Electrons
- Neutrons
- Positive ions

##### 15. How much time is required for an operating 100 W light bulb to dissipate 10 Joules of electrical energy?

- 1 sec.
- .1 sec
- .25 sec
- 200 sec