What term is used to describe the tendency of an object in motion, to want to stay in motion?
A. Static friction
B. Dynamic friction
C. Kinetic energy
D. Inertia
Answer: D
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A gas is confined in a 1.25(ft) diameter cylinder by a piston, on which rests a weight. The mass of the piston and weight together is 
The local acceleration of gravity is 
and atmospheric pressure is 30.12(in Hg).
(a) What is the force in (lbf) exerted on the gas by the atmosphere, the piston, and the weight, assuming no friction between the piston and cylinder?
(b) What is the pressure of the gas in (psia)?
(c) If the gas in the cylinder is heated, it expands, pushing the piston and weight upward. If the piston and weight are raised 1.7(ft), what is the work done by the gas in 
What is the change in potential energy of the piston and weight?
When the principal views are clearly dimensioned at a 1:1 scale, but this scale is too small to clarify the shape and size of a part feature, a viewing plane line is placed to show the relationship of the principal view to the auxiliary view. The auxiliary view can then be placed in any convenient location at a larger scale.
a. auxiliary view b. scaled view c. view enlargement d. view improvement
For the cash flow diagram shown, the future worth in year 4 is closest to:
(a) <$2800 (b) $2915 (c) $3735 (d) $5219
The water in the soil typically differs from pure water because the soil water:
A) is restrained in its flow by attraction to particle surfaces. B) contains organic compounds. C) contains mineral nutrients. D) all of the above E) none of the above