When you push a crate across a level floor at constant velocity, friction between the crate and the floor is
A) less than your pushing force.
B) the same amount as your pushing force.
C) more than your pushing force.
D) none of the above
Answer: B
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The word "comet" comes from the Greek word for which of the following?
A) bright B) hair C) fuzzy D) tail
Assume a gram of a substance marketed as "Pure Energy" is annihilated by a gram of a second substance "Anti-Pure Energy." How long would the energy released power a city which uses 109 watts of power?
a. 40 hrs b. 25 hrs c. 50 hrs d. 65 hrs e. 50000 hrs
For an observer on Uranus, the ecliptic passes only a few degrees from the celestial poles
Indicate whether the statement is true or false
It's hot as blue blazes outside so you stand in front of your refrigerator with the door open to cool off. If you stand there long enough,
A. the room will eventually get colder. B. the room will stay the same temperature. C. the room will eventually get warmer.