Please review and study chapters 12-17. The midterm is tomorrow (Friday November 28)!
Short Answer 6 (1 each per chapter)
* Why is it easier to push a heavy box once it is already moving?
* Using a block and tackle with an IMA of 9.0 and an efficiency of 92.6%, you exert 200 N of force to lift an object. What is the weight of the object that you moved?
* Identify the three main forms of fossil fuels.
*How do thermometric properties make liquid-filled thermometers possible?
*According to the gas laws, what pressure would be exerted by 1 L of gas if the temperature of the
gas could be lowered to absolute zero?
*What is the frequency of a wave of light that has a wavelength of 675 nm and travels
at the speed of light (3.00 × 10^8 m/s)?
Essay 6 (1 each per chapter)
* How do you represent balanced and unbalanced forces on a free-body diagram? Why do free-body
diagrams sometimes omit some of these forces?
* Explain the statement “Simple machines make me do more work while at the same time making
work easier.”
* Discuss the benefits and drawbacks of using fossil fuels for energy.
*As you sit on a log next to a campfire, a spark jumps out and lands on your hand. Ouch! Explain
the difference in temperature and thermal energy between the spark and the log. As you felt the
hot spark on your hand, were you sensing temperature or thermal energy?
*Explain why a steel ship floats but a steel nail sinks.
*Explain the difference between a transverse wave and a longitudinal wave and give an example of
each.
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