1.

A common practice for a person with a high fever is to take a bath in cool water. Assuming an 80 kg person is really ill and needs to cool down from 40C to 37C. What is the minimum amount of water needed for bathing assuming the water begins at room temperature, 25C? The specific heat of the body on average is 3470 J/kgC and water is 4186 J/kgC.

	200 kg
	19.8 kg
	212.2 kg
	16.6 kg

2.

Explain the basic functioning of a hydraulic lift. Be sure to include the terms pressure, density, and buoyant force in your explanation. Give one example of a hydraulic lift you have encountered.

3.

A 500 Ohm, 200 Ohm, and 300 Ohm resistors are all in series and connected to 100 V power supply. What is the potential difference across the 200 Ohm resistor?

	100 V
	50 V
	30 V
	20 V

4.

Describe the relationship between entropy and ability to do work. Be sure to include the terms, entropy, order, disorder, temperature, volume, and work in your answer.

5.

A police siren passes you with a frequency of 5000 Hz. Which correctly describes the sound wave after the police car passes you? The speed of sound is 340 m/s.

	siren wavelength of 0.0068 meters, frequency you hear = 5000 Hz
	siren wavelength of 0.0068 meters, frequency you hear = less than 5000 Hz
	siren wavelength of 0.0068 meters, frequency you hear = more than 5000 Hz
	siren wavelength of 5000 meters, frequency you hear = 5000 Hz

6.

Explain how a compass works with Earth's magnetic poles.

7.

The energy levels for a Bohr atom are shown below.

An electron absorbs a photon of wavelength 4008 nm. What transition did the electron make? (h = 6.626 x 10^-34, 1 eV = 1.6 x 10^-19 J)

	from 4 to 5
	from 4 to 2
	from 2 to 4
	from 5 to 4

8.

When objects are in thermal equilibrium, they have the same:

	Gravity
	Heat
	Temperature
	Energy

9.

An engine is 99% efficient. How much work could an engine that runs at 888 J produce?

	888 J
	879 J
	800 J
	897 J

10.

A refrigerator lowers the temperature, or internal energy, of substances, which are largely isovolumetric. Which sentence best describes this process?

	The substance gives heat to the refrigerator and does not change volume in the process.
	The substance gives heat to the refrigerator and changes volume in the process.
	The substance takes heat from the refrigerator and changes volume in the process.
	The substance takes cold from the refrigerator and does not change volume in the process.

12.

What is the de Broglie wavelength of a 0.001 kg marble moving at a speed of 3.00 m/s? (h = 6.626 x 10^-34 Js)

	1.99 x 10-35 m
	1.99 x 10-31 m
	2.21 x 10-35 m
	2.21 x 10-31 m

13.

What is magnetic induction?

	a piece of metal that has atoms aligned such that it attracts other pieces of metal
	branch of physics dealing with the interaction of electric and magnetic fields
	an area surrounding a magnet in which a magnetic force acts on a moving charge
	the creation of a magnet by bringing a magnet close to another non-magnetic material

14.

During a photoelectric effect experiment, light possessing 2.56 eV of energy is incident on the photosensitive material. The work function of the material is 0.250 eV. What is the kinetic energy of the emitted electrons?

	4.10 x 10-19J
	3.70 x 10-19 J
	4.00 x 10-20 J
	4.50 x 10-19 J

15.

Explain the Michelson-Morley experiment and why it was important.

16.

Describe how Snell's Law applies to thin lenses.

17.

This scientist improved on Rutherford's model of the atom, explaining that electrons could only orbit at specific distances.

	Democritus
	Bohr
	Thomson
	Dalton