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SCI 110 TEST ANSWERS

SCI 110 TEST ANSWERS

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An object moving in a circle at constant speed is accelerated
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Question 2
2.5 out of 2.5 points
A bullet is fired upward. As it rises,
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Question 3
2.5 out of 2.5 points
The radius of the path of an object moving in a circle at constant speed is halved. If the speed remains the same, the centripetal force needed is
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Question 4
2.5 out of 2.5 points
If the moon were half as far from the earth as it is now, the gravitational force it exerts on the earth would be
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Question 5
2.5 out of 2.5 points
Relative to what she weighs on the earth, an astronaut visiting another planet
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Question 6
2.5 out of 2.5 points
A moose weighing 3 kN is standing still. The force the ground exerts on the moose is
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Question 7
2.5 out of 2.5 points
A snail travels 45 cm in 20 min. Its average speed is
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Question 8
2.5 out of 2.5 points
Which of the following units could be associated with a vector quantity?
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Question 9
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Of the following, a molecule is best described as
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Question 10
2.5 out of 2.5 points
The properties of several different materials are being compared. If the samples all have the same volume, the one with the greatest mass also has the greatest
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Question 11
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Which of the following is not true of molecular motion in a gas?
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Question 12
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The circulation of hot air in a room is an example of transfer of heat by
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Question 13
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When heat is added to a body of matter, the resulting temperature increase does not depend upon
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Question 14
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The pressure at the bottom of a barrel filled with liquid does not depend on the
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Question 15
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The temperature of a gas sample in a rigid container is reduced. The pressure the gas exerts on the container walls decreases because
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Question 16
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Ice floats in water because
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Question 17
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The concept that gravitation is a distortion of space-time is part of
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Question 18
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Which of the following quantities is always the same to all observers?
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Question 19
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The angular momentum of spinning object depends, in part, on its mass and how fast it is spinning.  Consider the following situation:  a skater spins slowly on one skate, with her arms and the other leg extended.  As she pulls in her arms and extended leg, she spins faster.  This is because
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Question 20
2.5 out of 2.5 points
The linear momentum of a 400-kg giraffe galloping at 5 m/s is
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