The capacitance per unit length of a coaxial cable, made of two concentric cylinders, is 50 pF/m. What is the radius of the outer cylinder if the radius of the inner one is 1.0 mm?
A)
3.0 mm
B)
2.0 mm
C)
4.0 mm
D)
0.50 mm
E)
1.0 mm
A
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Find the speed of an ocean wave whose vertical displacement y as a function of time t is given by y(x,t) = 3.7 cos(2.2x - 5.6t), where all quantities are in SI units
A) 2.5 m/s B) 1.9 m/s C) 3.5 m/s D) 4.5 m/s
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A) Charon B) Europa C) Triton D) Titan
A ball thrown upwards reaches a maximum height and then comes back down to the original level. At the maximum height
a. the velocity and acceleration both point up. b. the velocity points up and the acceleration down. c. the velocity points down and the acceleration up. d. the velocity and acceleration both point down. e. the velocity is zero. f. the acceleration is zero.
Which clock measures a coordinate time between the synchronization and comparison events?
A. Clock A B. Clock B C. Both D. Neither