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A Van de Graa? generator has a potential di?erence of 2.35 MV between the belt and the outer shell. Charge is supplied at the rate of 220 µC/s. What minimum power is needed to drive the moving belt?
The max wavelength of light, which emits electrons is 460 nm. Calculate work function of sodium
Calculate the probability of finding the electron in the ground state of hydrogen at less than one Bohr radius from the nucleus
A late night time talk show host drops a watermelon from the top of the studio. If the speed of the watermelon is 21 m/s when it hits the ground, how tall is the studio?
As a particle moves from the origin to (1i + 7j) m, it is acted upon by a force given by (2i + 6j) N. Calculate the work done by this force on the particle
A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..
You measure an electric field of 1.32*10^6 N/C at a distance of 0.156m from a point charge. What is the magnitude of the charge
If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ball? (Suppose right is the positive direction.)
At one instant a bicyclist is 43 m due east of a park's flagpole, going due south with a speed of 12 m/s. Then 22 s later, the cyclist is 43 m due north of the flagpole, going due east with a speed of 12 m/s.
Amy (mass 60kg) and initial velocity +7.5m/s, is skating on ice toward Bob (mass 90kg) and initial velocity +4.0m/s. They collide at some point. Determine amys final speed
These two isotopes are singly ionized (+e) and each is given a speed of 6.00 x105 m/s.
Pennies today are copper-covered zinc, What are the total positive charge and total negative charge in a solid copper penny that is electrically neutral
A block rests on the frictionless horizontal surface and is attached to a spring. While set into simple harmonic motion, block oscillates back and forth with an angular frequency of 6.5 rad/s.
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