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Gen Phys Final Prep

Total questions: 51

Worksheet time: 2hrs 53mins

Name
Class
Date
1.

The total resistance in this circuit is

a)

100 ohms

b)

450 ohms

c)

400 ohms

d)

30 ohms

2.

The current going through the 45 ohm resistor is

a)

0.05 amps

b)

0.2 amps

c)

0.1 amps

d)

5 amps

3.
The total resistance of this circuit is 
a)
25.7 ohms
b)
315 ohms
c)
324 ohms
d)
90 ohms
4.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
5.

An electrical junction has three wires A, B and C connected to it. Wire A carries 4.2 A going in, wire B carries 2.6 A going out. What does wire C carry?

a)

1.6 A going in

b)

1.6 A going out

c)

6.8 A going in

d)

6.8 A going out

6.

"The sum of all voltage drops in a series circuit equals the total applied voltage." This is know as what?

a)

Ohm's Law

b)

Kirchhoff's Voltage Law

c)

Kirchhoff's Current Law

d)

Bolen's Law

7.

What part of the wave is shown at letter A?

a)

crest

b)

period

c)

wavelength

d)

frequency

8.
When wavelength increases, what happens to the frequency?
a)
it increases
b)
it decreases
c)
it stays the same
9.
What is the speed of a wave that has a wavelength of 2 and a frequency of 2.5?
a)
2.5 m/s
b)
5 m/s
c)
4.5 m/s
d)
6 m/s
10.
Which EM wave has the lowest frequency?
a)
radio
b)
xray
c)
gamma
d)
infrared
11.
Which wave has the greatest amplitude?
a)
A
b)
B
c)
C
d)
D
12.
If two overlapping waves are in-phase, the resultant wave will have ______ compared to the two waves.
a)
Greater amplitude
b)
Greater frequency
c)
Greater wavelength
d)
Greater wave speed
13.
When an ambulance move TOWARD you it sounds ________ pitched. 
a)
high
b)
low
c)
medium
14.
A pair of trapeze performers at the circus is swinging from ropes attached to a large elevated platform. Suppose that the performers can be treated as a simple pendulum with a length of 16 m. Determine the period for one complete back and forth cycle.
a)
2 sec
b)
12 sec
c)
8 sec
d)
10 sec
15.
An object attached to one end of a spring makes 20 complete vibrations in 10s. Its period is: 
a)
0.50 s 
b)
2 s 
c)
0.5 Hz 
d)
2 Hz 
16.
A truck with bad shock absorbers bounces up and down after hitting a bump. The truck has a mass of 1700 kg and is supported by four springs, each having a spring constant of 6200 N/m. What is the period for each spring?
a)
0.26 sec
b)
1.645 sec
c)
0.26 hz
d)
1.645 hz
17.
A 2.5 kg ball moving at 4.2 m/s collides with a 2.5 kg stationary ball. If the first ball is at rest after the collision, what is the velocity of the second ball? 
a)
2.1 m/s
b)
2.5 m/s
c)
4.2 m/s
d)
8.4 m/s
18.
A dart with a mass of 0.5kg is thrown at 15m/s and sticks into a 1kg apple hanging on a string.  What is the velocity of the dart and apple just after the dart is embedded? 
a)
0 m/s
b)
5 m/s
c)
10 m/s
d)
15 m/s
19.
When is momentum conserved in a collision?
a)
When the collision is inelastic.
b)
When the collision is elastic.
c)
When the collision is inelastic OR elastic but never an explosion.
d)
All collisions.
20.
How much work is being done with 200 N of force over 426 meters?
a)
85,200 J
b)
45,620 J
c)
90,480 J
d)
62,329 J
21.

You raise a bucket of water from the bottom of a well that is 12 m deep. The mass of the bucket and the water is 5.00 kg, and it takes 15 s to raise the bucket to the top of the well. How much power is required?

a)

39 W

b)

41 W

c)

43 W

d)

45 W

22.

An olympic diver with a mass of 90 kgs jumps from the 12 m tall diving board into a pool. What is their velocity when they hit the water?

a)

0 m/s

b)

9.8 m/s

c)

15.3 m/s

d)

235.2 m/s

23.
If two identical objects travel at the same speed, which path requires less centripetal force?
a)
I (larger radius)
b)
II (smaller radius)
c)
They are the same
24.

What is the weight of the package?

a)

5 N

b)

10 N

c)

15 N

d)

20 N

25.
What is the weight of the package?
a)
5 N
b)
10 N
c)
15 N
d)
20 N
26.
What happens to her angular velocity when a figure skater brings in her arms?
a)
Increases her angular velocity
b)
Decreases her angular velocity
c)
Has no affect
27.

Which would have a greater angular momentum?

a)

Kid near the center of the merry go round

b)

Kid near the outside of the merry go round

c)

neither

28.

What would happen to the angular momentum of the system if the girl along the outside were to pull herself closer to the middle?

a)

Angular momentum would increase

b)

Angular momentum would decrease

c)

Angular momentum would remain the same

d)

The angular momentum cancels out

29.
A 10-newton force is required to hold a stretched spring 0.20 meter from its rest position. What is the potential energy stored in the stretched spring?
a)
1 J
b)
2 J
c)
5 J
d)
50 J
30.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
31.
You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?
a)
Friction
b)
Centripetal Force
c)
Gravity
d)
Inertia
32.

According to Newton's law of gravitation, the Earth and the Moon are gravitationally attracted to each other. The more massive Earth attracts the Moon with...

a)

a stronger force than the Moon attracts the Earth.

b)

a weaker force than the Moon attracts the Earth.

c)

the same force as the Moon attracts the Earth.

d)

a force that is sometimes stronger and other times weaker than the Moon attracts the Earth.

33.

The Earth exerts a gravitational force of 12 N upon satellite B. Satellite A is twice as far away from the Earth as satellite B. Determine the gravitational force the Earth exerts on satellite A.

a)

3 N

b)

6 N

c)

12 N

d)

24 N

34.
If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
35.
It takes more force to accelerate the iron man on the left than the iron man on the right because the iron man on the left has more mass. This best describes
a)
Newton's first law, the law of inertia
b)
Newton's second law, the law of acceleration
c)
Newton's third law, the law of action reaction 
d)
The law of universal gravitation
36.

Which of the following must be true if an object is accelerating?

a)

It is going really fast.

b)

It is moving away from the frame of reference point.

c)

Balanced forces are acting upon it.

d)

Unbalanced forces are acting upon it.

37.
What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N? 
a)
0.78
b)
0.51
c)
0.78 N
d)
0.58 N
38.
What is the definition of "weight"?
a)
measure of the force of gravity on your body
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
39.
The mass of an object ___________ as it moves away from the center of Earth
a)
stays the same
b)
decreases
c)
increases
d)
doubles
40.
The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?
a)
50 kg and 490 N
b)
100 kg and 490 N
c)
50 kg and 980 N
d)
100 kg and 980 N
41.
What is this graph representing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
42.
The fastest trains are magnetically levitated above the rails to avoid friction (and are therefore called
MagLev trains...cool, huh?). The fastest trains travel about 250 km in a half an hour. What is their
average speed in km/hour?
a)
250 km/hr
b)
500 km/hr
c)
125 km/hr
43.
A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is 
a)
6 m/s/s opposite the motion
b)
2m/s/s in the direction of motion
c)
8 m/s/s opposite the motion
44.
Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance?
a)
10
b)
7
c)
8
d)
6
45.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
46.
There are _____ meters in a kilometer.
a)
10
b)
100
c)
1,000
d)
10,000
47.
When two displacements are not in a straight line you can...
a)
use the pythagorean theorem
b)
resultant vector
c)
add their directions
d)
add their magnitudes
48.
5000 millimeters = ____ meters
a)
5
b)
50
c)
500
d)
25
49.
A bicycle has a speed of 6 m/s. What is its speed in km/h?  (1 km=1000 m)
a)
21.6 km/h
b)
16.67 km/h
c)
2.16 km/h
d)
1.67 km/h
50.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
51.
Express the following in scientific notation:
.000457
a)
457 x 106
b)
457 x 10-6
c)
4.57 x104
d)
4.57 x 10-4

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