Physics
vgirl
physics_fe_part_1.docx1. Resonance occurs when two different objects vibrate
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A. |
with different frequencies |
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B. |
with the same frequencies |
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C. |
with high frequencies |
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D. |
with low frequencies |
1 points
QUESTION 2
1. A beam of light is reflected off a plane mirror at an angle of 50˚ relative to the surface. What is the angle of incidence of this light beam?
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A. |
50˚ |
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B. |
30˚ |
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C. |
40˚ |
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D. |
0˚ |
1 points
QUESTION 3
1. Which of the following has the greatest linear momentum?
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A. |
a 3 kg mass moving at 4 m/s |
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B. |
a 500 gram mass moving at 80 m/s |
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C. |
a 1000 kg mass at rest |
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D. |
a 30 kg mass moving at 1.5 m/s |
1 points
QUESTION 4
1. What is the total charge of 3 protons and one electron? (in coulombs)
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A. |
4.8 x 10-19C |
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B. |
-1.6 x 10-19 |
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C. |
1.6 x 10-19 |
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D. |
3.2 x 10-19C |
1 points
QUESTION 5
1. Which one of the following is the MKS (SI) unit for both work and energy?
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A. |
kW |
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B. |
erg |
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C. |
Coulomb |
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D. |
Joule |
1 points
QUESTION 6
1. Put given number 0.0031 in scientific notation
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A. |
3.1x10-2 |
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B. |
3.1x10-3 |
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C. |
3.1x103 |
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D. |
3.1x102 |
1 points
QUESTION 7
1. The heat required to change 1.50 kg of water at initial temperature of 400C into steam at 1000C is
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A. |
810 kcal |
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B. |
90 kcal |
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C. |
750 kcal |
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D. |
900 kcal |
1 points
QUESTION 8
1. An object in uniform circular motion has
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A. |
constant acceleration |
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B. |
variable radial distances |
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C. |
constant velocity |
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D. |
constant speed |
1 points
QUESTION 9
1. The heating element of an iron has a resistance of 11 Ohms. How much power is consumed by the iron when it is operating at 110 Volts?
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A. |
99 W |
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B. |
1.1 kW |
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C. |
1.2 kW |
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D. |
10 W |
1 points
QUESTION 10
1. A change in velocity
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A. |
implies no acceleration |
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B. |
results from a zero net force |
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C. |
results from inertia |
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D. |
requires an unbalanced force |
1 points
QUESTION 11
1. A vector is a physical quantity that has ________________ and ___________________
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A. |
a number, direction |
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B. |
number, unit of measurement |
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C. |
direction, unit of measurement |
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D. |
magnitude and direction |
1 points
QUESTION 12
1. A sled and rider with a combined mass of 75 kg slide down from the top of a hill 20 m high. What is their kinetic energy as they reach the bottom of the hill?
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A. |
1.5 x 104 J |
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B. |
490 J |
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C. |
1.47 x 103 J |
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D. |
9.8 x 104 J |
1 points
QUESTION 13
1. The unbalanced horizontal net force on a truck of mass 1500 kg moving along a straight horizontal line at a uniform speed of 25 m/s is:
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A. |
14,700 N |
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B. |
37,500 N |
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C. |
0 N |
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D. |
3,304 lb |
1 points
QUESTION 14
1. Which one of the following sound frequencies is in the range of human hearing?
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A. |
7 Hz |
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B. |
700 Hz |
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C. |
14 Hz |
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D. |
70,000 Hz |
1 points
QUESTION 15
1. A ball is dropped from a height of 60 m on the Earth. How long does it take for the ball to hit the ground?
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A. |
3.5 ms |
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B. |
12.2 s |
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C. |
3.3 ms |
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D. |
3.5 s |
1 points
QUESTION 16
1. The density of ice is 0.920 g/cm3. Find the mass in kilograms of a cube of ice whose side is 9.00 cm long?
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A. |
0.115 kg |
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B. |
9.80 lb |
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C. |
0.671 kg |
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D. |
1.78 lb |
