The product of the wavelength times the frequency of a wave is its ________
Fill in the blank(s) with correct word
velocity
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A thin spherical shell of radius 20.0 cm has 5.0 ?C of charge uniformly distributed over its surface. What is the electric field 10.0 cm from the center of the sphere?
A. 
inward
B. 
outward
C. 
inward
D. 
outward
E. 0
As a projectile moves its speed stays constant while its direction changes
Indicate whether the statement is true or false
A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative to the ship must the spaceship launch a shuttlecraft in the forward direction so that it will be moving away from Earth at 98.7% the speed of light?
A) 0.91c B) 0.97c C) 0.93c D) 0.99c E) 0.84c
A particle (charge = Q) is kept in a fixed position at point P, and a second particle (charge = q) is released from rest when it is a distance R from P. If Q = +2.0 mC, q = ?1.5 mC, and R = 30 cm, what is the kinetic energy of the moving particle after it has moved a distance of 10 cm?
A. 60 kJ B. 45 kJ C. 75 kJ D. 90 kJ E. 230 kJ