final exam review introductory physics part b 1) the amount of matter in an object is a) weight b)...
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Final Exam Review
Introductory Physics Part B
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1) The amount of matter in an
object is
a) weightb) massc) volumed) area
mass
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2)The amount of space taken up by an object is
a) weightb) massc) volumed) surface area
volume
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3) What is force?
a) potential energyb) a push or a pullc) workd) kinetic energy
A push or a pull
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4) A car travels at a certain velocity. If it triples it’s
speed, by how much does the KE increase?a) 2 times
b)3 timesc) 9 timesd) none of these answers
9 times
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5) What is the correct formula
for momentum?
a) mass/volumeb) mass x volumec) mass x velocityd) velocity/mass
Mass x velocity
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6) What is the momentum of a 50 kg person walking
2 m/s?
a)25 kg*m/sb) 5000 kg*m/sc) not enough informationd) 100 kg*m/s100 kg*m/s
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7) The ability to do work is:
a) energyb) potential energyc) accelerationd) motion
energy
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8) What law is this? Energy cannot be created or destroyed; it may be
transformed from one for into another, but the total
amount of energy never changes.,
a) conservation of massb) conservation of matterc) conservation of
momentumd) Conservation of energyConservation of energy
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9) If an object has energy it:
a) has the ability to do workb) must have kinetic energyc) is doing workd) Has force
Has the ability to do work
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10) What is the potential energy of 1 kg block on a ledge
10 meters high
a) 980 Jb) 98 Jc) .98 Jd) 9.8 J
98 J
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11) What is the formula for work?
a) force x circumferenceb) force/ areac) Force x distanced) Distance and weight
Force x distance
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12) What is density?
a) how heavy an object isb) force/areac) mass/volumed) weight/volume
mass/volume
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13) What is the momentum of a
1200 kg car traveling at 8 m/s?
a) 150 kg*m/sb) 9600 kg*m/sc) 1208 kg*m/sd) Cannot be determined with
information given
9600 kg*m/s
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14) Calculate the work done if the net force on an
object is 120N and it is pushed 3 meters.
a) 40 Jb) 123 Jc) 360 Jd) None of these answers
360 J
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15) How much power is used if a student
weighing 520 N. climbs the stairs
(vertical height) of 3.6 meters in 5 s.
a) 104.72 Wb) 374.4 Wc) 28.9 Wd) 9360 W
374.4 W
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16) In order to increase power,the
student in the previous problem
could:a) Lose weightb) Gain weight yet keep the same
speedc) Climb the stairs slowerd) Climb the stairs fastere) Both b and dBoth b and d
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17) Heat is best described as:
a) The transfer of thermal energy
b) How hot something may bec) Thermal energyd) Temperature
The transfer of thermal energy
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18) In the electromagnetic
spectrum, the waves with the highest
energy are:
a) microwavesb) X raysc) Gamma raysd) Radio waves
Gamma rays
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19) A measure of the average
kinetic energy of the molecules is:a)temperatureb) heatc) Thermal energyd) friction
temperature
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20) As water freezes, the
density decreases because
the________ increases
a) pressureb) volumec) iced) Thermal energy
volume
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21) How much kinetic energy
does a 24 kg. cart traveling 3m/s
have?a) 108 Jb) 72 Jc) 8 Jd) None of these answers
108 J
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22) When boiling water in the mountains, the temperature of the
boiling water is:
a) 100 degrees Celsiusb) 212 degrees Fahrenheitc) less than100 degrees Celsiusd) not affected by the pressure
less than100 degrees Celsius
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23) The temperature of boiling water in
Celsius is ___ degrees.
a) 212b) 100c) 32d) 0
100
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24) The weight of a 2 kg box of
chocolates would be____ N.
a) 2b) 20c) .2d) 12
20
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25) What is the net force if an object is pushed west with a
force of 5 N and east with a force of 25 N.
a) 20 N eastb) 20 N westc) 30 N eastd) 30 N west
20 N east
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26) A force vector shows
both ________ and direction.
a) pressureb) Magnitude (amount)c) energyd) power
Magnitude (amount)
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27) Which of the following is true about potential
energy?a) Objects with PE are always at restb) There are four different forms of PEc) PE cannot change into KEd) PE is stored energyPE is stored energy
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28) A 20 kg cart moving 5m/s collides with a stationary cart with a mass of 5kg. They stick together after the crash. How fast are they going?
a)2b) 4c) 5d) 1
4
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29) How much work is done when a 12 kg object is lifted 2 meters?
a) 24 J b) 120 Jc) 240 Jd) Cannot be determined
240 N*m
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30) The method of heat transferring which fluids move thermal energy in
currents is:
a) conductionb) radiationc) Lava flowsd) ConvectionConvection