A Hooke's law spring is compressed 12.0 cm from equilibrium and the potential energy stored is 36.0 J. What is the spring constant in this case?
a. 10,000 N/m
c. 1200 N/m
b. 5000 N/m
d. The correct answer is not given.
B
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Two people are on a ride where the inside cars rotate at constant angular velocity three times the constant angular velocity of the outer cars. If the two cars are in line at t = 0, and moving at 3? and ? respectively, at what time will they next pass each other?
A.
B.
.C.
.D.
.E.
.Why are optical fibers important for communication?
a. They can carry thousands of times the information that wires can. b. Light goes faster than electricity. c. They carry digital information. Wires can't carry digital information. d. all of the above
Which font in the figure above is an example of a serif font?
A. Tahoma B. Georgia C. Ravie D. Courier New
How many molecules are in 1.00 mol of sulfur dioxide, SO2?
a. 64.1 b. 64.1 × 6.02 × 10^23 c. 12.0 × 10^23 d. 6.02 × 10^23