75 Questions
| Attempts: 63

Questions and Answers

- 1.Questions 1-3 relate to the following.(A) Amplitude(B) Frequency(C) Resonance(D) Wave speed(E) OscillationThe brightness of light and the volume of sound are associated with which wave characteristic?
- A.
Amplitude

- B.
Frequency

- C.
Resonance

- D.
Wave speed

- E.
Oscillation

- 2.Which wave property is controlled by the medium that the wave propagated through?
- A.
Amplitude

- B.
Frequency

- C.
Resonance

- D.
Wave speed

- E.
Oscillation

- 3.Which wave property remains constant when light waves enter a medium that has a greater density?
- A.
Amplitude

- B.
Frequency

- C.
Resonance

- D.
Wave speed

- E.
Oscillation

- 4.Questions 4-6 relate to the changes that could be made in the following scenario and the results such changes would produce. (A) Mass of the bob was increased. (B) Length of the pendulum was increased. (C) Mass of the bob was decreased. (D) Length of the pendulum was decreased. (E) Displacement from zero was increased. A pendulum swings at a rate of 0.75 vibrations/second.The period of the vibrations would increase because...
- A.
The mass of the bob was increased.

- B.
Length of the pendulum was increased.

- C.
Mass of the bob was decreased.

- D.
Length of the pendulum was decreased.

- E.
Displacement from zero was increased.

- 5.The frequency of the vibrations would decrease because...
- A.
Mass of the bob was increased.

- B.
Length of the pendulum was increased.

- C.
Mass of the bob was decreased.

- D.
Length of the pendulum was increased.

- E.
Displacement from zero was increased.

- 6.The velocity of the pendulum would increase because...
- A.
Mass of the bob was increased.

- B.
Length of the pendulum was increased.

- C.
Mass of the bob was decreased.

- D.
Length of the pendulum was decreased.

- E.
Displacement from zero was increased.

- 7.Question 7-9 relate to the following scenario. A dog walks 120 m due east before turning and running 45 m west. He then turns and trots 40 m due north. After completing his journey, he is 85 m northeast of his home. When he hears his master call him, he runs directly home.(A) The eastward leg(B) The westward leg(C) the northward leg(D) The distance from home(E) The distance to homeWhich part of the trip is a negative vector?
- A.
The eastward leg

- B.
The westward leg

- C.
The northward leg

- D.
The distance from home

- E.
The distance to home

- 8.Which part of the trip is an equilibrant?
- A.
The eastward leg

- B.
The westward leg

- C.
The northward leg

- D.
The distance from home

- E.
The distance to home.

- 9.Which part of the trip is the longest vector?
- A.
The eastward leg

- B.
The westward leg

- C.
The northward leg

- D.
The distance from home

- E.
The distance to home

- 10.Questions 10-12 relate to the following to the following chart, which is a partial energy level diagram for the hydrogen electron. .54 eV _____________________ n 5.85 e _____________________ n 41.51 eV _____________________ n 33.4 eV ______________________ n 213.6 eV ______________________ n 1 Use the choices below to answer the questions that follow. The questions relate to a hydrogen electron located at E – 3. (A)
__+__.66 eV(B)__+__.966 eV(C)__+__1.89 eV(D)__+__10.2 eV(E)__+__12.09 eVWhat is the emission energy when the electron falls to E-2 from E-3?- A.
+/- 0.66 eV

- B.
+/- 0.96 eV

- C.
+/- 1.89 eV

- D.
+/- 10.2 eV

- E.
+/- 12.09 eV

- 11.What is the absorbed energy when the electron jumps to E-5 from E- 3?
- A.
+/- 0.66 eV

- B.
+/- 0.966 eV

- C.
+/- 1.89 eV

- D.
+/- 10.2 eV

- E.
+/- 12.09 eV

- 12.What is the emission energy when the electron falls to E-1 from E-3?
- A.
+/- 0.66 eV

- B.
+/- 0.966 eV

- C.
+/- 1.89 eV

- D.
+/-10.2 eV

- E.
+/- 12.09

- 13.Questions 13 – 15 relate to the following. Determine the magnitude of acceleration during interval B, from 2 seconds to 4 seconds.
- A.
0 m/s^2

- B.
10 m/s^2

- C.
15 m/s^2

- D.
20 m/s^2

- E.
40 m/s^2

- 14.During which interval(s) is the object moving at a constant verlocity?
- A.
A only

- B.
B only

- C.
C only

- D.
Both A and E

- E.
Both B and D

- 15.During which interval did the object travel the farthest?
- A.
A

- B.
B

- C.
C

- D.
D

- E.
E

- 16.A 12,500 kg boxcar rolling through a freight yard has a velocity of 1 m/s when it strikes another boxcar of the same mass that is at rest. Both cars stick together and continue to roll down the track with a momentum of
- A.
0 kg.m/s

- B.
3125 kg.m/s

- C.
6250 kg.m/s

- D.
12500 kg.m/s

- E.
25000 kg.m/s

- 17.When a woman pushes on her grocery cart, the woman moves because of,
- A.
The force the woman exerts on the grocery cart.

- B.
The force the grocery cart exerts on the woman.

- C.
The force the woman exerts on the ground.

- D.
The force the ground exerts on the woman.

- E.
The force the grocery cart exerts on the ground.

- 18.Questions 17 – 18 relate to the following. The motion of an object is depicted in the following position – time graph. During which interval(s) is the magnitude of the object’s velocity decreasing?
- A.
A only

- B.
B only

- C.
C only

- D.
A and E only

- E.
None of these.

- 19.During which interval does the object have the greatest speed?
- A.
A

- B.
B

- C.
C

- D.
D

- E.
E

- 20.. At t = 0 seconds, a force, F1 = 10 newtons, acting in the +x direction is applied to a 5 kilogram mass that is initially at rest. At t = 2 seconds, a new force is added to the first force. The new force, F2 = 10 newtons, acts in the –x direction. Determine the acceleration of the object at t = 5 seconds while both forces continue to be applied
- A.
Zero

- B.
1 m/s^2

- C.
2 m/s^2

- D.
4 m/s^2

- E.
5 m/s^2

- 21.A 50 kilogram person stands on a scale in an elevator that is accelerating upward at 1 mete per second squared. What is the apparent weight of the person?
- A.
Zero

- B.
50 N

- C.
450 N

- D.
500 N

- E.
550 N

- 22.Two masses, 10 kilograms and 30 kilograms, are suspended by massless ropes from the ceiling, as shown in the diagram above. Determine the tension in rope 3.
- A.
100 N

- B.
150 N

- C.
200 N

- D.
300 N

- E.
400 N

- 23.As shown in the figure above, mass m is pulled along a rough horizontal surface by force F, acting at an angle (theta) measure from the surface. The resulting motion is constant velocity. Which statement below is true?
- A.
The weight, W, of the object is equal to the normal force, N.

- B.
The weight, W, of the object is less than the normal force, N.

- C.
The force of friction, f, is equal to the applied force, F.

- D.
The force of friction, f, is less than the applied force, F.

- E.
The force of friction, f, is greater than the applied force, F.

- 24.A force, F = 12 newtons, pushes two masses, m1 = 3 kilograms and m2 = 1 kilogram, horizontally along a frictionless surface, as hown in the diagram above. Determine the acceleration of mass m2.
- A.
1 m/s^2

- B.
2 m/s^2

- C.
3 m/s^2

- D.
4 m/s^2

- E.
12 m/s2

- 25.The time it takes a satellite to make one orbit around the earth depends on the satellite's
- A.
Acceleration

- B.
Weight

- C.
Direction of rotation

- D.
Distance from earth

- E.
Launch speed

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