A cyclist does work at the rate of 500 W while riding. How much force does her foot push with when she is traveling at 8.0 m/s?
A)
31 N
B)
63 N
C)
80 N
D)
160 N
E)
4000 N
B
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How hot was the universe at time zero?
A) 2.73 K B) 5, 800 K C) 16, 000 K D) 1032 K E) We have no theory capable to addressing this question.
Special relativity says that time is a separate ________ in the workings of the universe
Fill in the blank(s) with correct word
If a negatively charged object is brought near a suspended, negatively charged object, the suspended object will be
a. repelled. b. charged more. c. discharged. d. attracted.
The figure below is a graph of the magnitude B versus time for a magnetic field that passes through a fixed loop and is oriented perpendicular to the plane of the loop. Rank the magnitudes of the emf generated in the loop at the three instants indicated from largest to smallest