Question 1

The "touch" sensors our human bodies use to judge temperature operates

Accepted Answer

A)   very poorly, sensing only heat flow.
B)   within 5°C of the actual temperature.
C)   better than most thermometers.
D)   None of the answers is correct. A

Question 2

The frequency is the time required for one complete cycle of a swinging pendulum.

Accepted Answer

A) True 
 B)False  False

Question 3

You can find the potential energy of a book of a known mass just before it hits the floor after falling a known distance by using which equation?

Accepted Answer

A)   W = Fd
B)   K.E. = ½ mv2
C)   P.E. = mgh
D)   None of the answers is correct. C

Question 4

Why is solar energy becoming more common for household electricity use?

Accepted Answer

A)   becoming more expensive
B)   becoming less expensive
C)   solar cells are smaller today than in the past
D)   chemical storage batteries are dangerous

Question 5

Sound waves moving through air are transverse.

Accepted Answer

A) True 
 B)False

Question 6

In the equation: Q = mc$\Delta$t, the c represents the

Accepted Answer

A)   speed of light.
B)   number of calories gained or lost.
C)   convection coefficient.
D)   type of material.

Question 7

A 250 g ball travels at a velocity of 40 m/s. Its momentum is

Accepted Answer

A)   4 kg•m/s.
B)   10 kg•m/s.
C)   160 kg•m/s.
D)   10,000 kg•m/s.

Question 8

Roughly, what fraction of our nation's electrical energy needs in total is supplied by coal?

Accepted Answer

A)   10 percent
B)   30 percent
C)   60 percent
D)   80 percent

Question 9

A radio playing music at 20 dB intensity is twice as loud as one playing at 10 dB.

Accepted Answer

A) True 
 B)False

Question 10

The mass of 1000 cm3 of water is a kilogram.

Accepted Answer

A) True 
 B)False

Question 11

To hit a golf ball farther, you should "follow through the swing" because

Accepted Answer

A)   this increases the force.
B)   momentum is conserved.
C)   of the relationship  Δ\DeltaΔ p = Ft.
D)   momentum is mv.

Question 12

A liquid at 20ºC is twice as hot as the liquid at 10ºC.

Accepted Answer

A) True 
 B)False

Question 13

If v = $\lambda$f, then how are $\lambda$ and f related?

Accepted Answer

A)   λ\lambdaλ  is directly proportional to f
B)    λ\lambdaλ  is inversely proportional to f
C)    λ\lambdaλ  is a factor of f
D)    λ\lambdaλ  and f are unrelated

Exam 1: What Is Science?, Motion, Wave Motions, Sounds, Energy, Heat and Temperature

The "touch" sensors our human bodies use to judge temperature operates

The frequency is the time required for one complete cycle of a swinging pendulum.

You can find the potential energy of a book of a known mass just before it hits the floor after falling a known distance by using which equation?

Why is solar energy becoming more common for household electricity use?

Sound waves moving through air are transverse.

In the equation: Q = mc $\Delta$ t, the c represents the

A 250 g ball travels at a velocity of 40 m/s. Its momentum is

Roughly, what fraction of our nation's electrical energy needs in total is supplied by coal?

A radio playing music at 20 dB intensity is twice as loud as one playing at 10 dB.

The mass of 1000 cm³ of water is a kilogram.

To hit a golf ball farther, you should "follow through the swing" because

A liquid at 20ºC is twice as hot as the liquid at 10ºC.

If v = $\lambda$ f, then how are $\lambda$ and f related?

Exam 1: What Is Science?, Motion, Wave Motions, Sounds, Energy, Heat and Temperature

The "touch" sensors our human bodies use to judge temperature operates

The frequency is the time required for one complete cycle of a swinging pendulum.

You can find the potential energy of a book of a known mass just before it hits the floor after falling a known distance by using which equation?

Why is solar energy becoming more common for household electricity use?

Sound waves moving through air are transverse.

In the equation: Q = mc Δ\DeltaΔ t, the c represents the

A 250 g ball travels at a velocity of 40 m/s. Its momentum is

Roughly, what fraction of our nation's electrical energy needs in total is supplied by coal?

A radio playing music at 20 dB intensity is twice as loud as one playing at 10 dB.

The mass of 1000 cm3 of water is a kilogram.

To hit a golf ball farther, you should "follow through the swing" because

A liquid at 20ºC is twice as hot as the liquid at 10ºC.

If v = λ\lambdaλ f, then how are λ\lambdaλ and f related?

In the equation: Q = mc $\Delta$ t, the c represents the

The mass of 1000 cm³ of water is a kilogram.

If v = $\lambda$ f, then how are $\lambda$ and f related?