How fast would a rocket have to move past a ground observer if the latter were to observe a 9.4% length shrinkage in the rocket length? (c = 3.00 × 10^8 m/s)
a. 2.98 × 10^8 m/s
b. 2.72 × 10^8 m/s
c. 1.27 × 10^8 m/s
d. 0.420 × 10^8 m/s
e. 0.920 × 10^8 m/s
c
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On its own, a tow truck has a maximum acceleration of 3.0 m/s2. What will be its maximum acceleration when the truck is using a light horizontal chain to tow a bus of twice its own mass?
A) 2.5 m/s2 B) 2.0 m/s2 C) 1.5 m/s2 D) 1.0 m/s2
A 2.0-?F capacitor is charged to 12 V and then discharged through a 4.0-M? resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?
A) 22 s B) 11 s C) 24 s D) 8.0 s
The pressure at what depth in seawater 
is equivalent to that at a depth of 10.0 m in fresh water 
A. 10.2 m B. 9.8 m C. 10.3 m D. 9.7 m
A 7.0-?C charge is placed at the origin and a second charge is placed on the x-axis at x = 0.3 m. If the resulting force on the second charge is 6.9 N in the positive x-direction, what is the force on the charge at the origin?
a. 6.9 N in the positive x-direction b. 6.9 N in the negative x-direction c. 0 N d. not able to be determined until the second charge is known e. 6.9 N in the negative y-direction