The escape velocity inside a black hole is
A. half the speed of light.
B. infinity.
C. greater than the speed of light.
D. zero.
E. unknown.
Answer: C
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Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a 30.0 degrees frictionless incline. The vertically hanging mass is 4.0 kg and the mass on the incline is 6.00 kg. The acceleration of the 4.00 kg mass is
A. 0.980 
B. 3.92
C. 5.75
D. 6.86
E. 7.84
Consider a car with its wheels rolling (not sliding) on the road. How fast must the auto move for some point on a wheel to reach the speed of sound? Explain
What will be an ideal response?
A solution with a pH of 8 is
a. strongly acidic. b. weakly basic. c. strongly basic. d. weakly acidic.
The inductive reactance of an inductor is higher at low frequencies
Indicate whether the statement is true or false