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A uniform electric field of magnitude 300 V/m is directed in the positive x direction. A +10.0 µC charge moves from the origin to thepoint (x, y) = (20.0 cm, 50.0 cm).
a) What was the change in the potential energy of this charge?
b) Through what potential difference did the charge move?
A certain refrigerator is rated as being 33% as efficient as a Carnot refrigerator. To remove 107 J of heat from the interior at 0 °C and eject it to the outside at 24 °C, how much work must the refrigerator motor do?
A satellite moves in a circular orbit around Earth at a speed of 4714 m/s. Determine the satellite's altitude above the surface of Earth
An unbanked circular highway curve on level ground makes aturn of 90 degrees. What is the minimum length of the curve in miles
Rhea, one of Saturn's moons, has a radius of 765 km and an acceleration due to gravity of 0.278 m/s2 at its surface. Calculate its mass and average density.
A simple pendulum has a mass of 0.650 kg and a length of 2.00 m. It is displaced through and angle of 7.0 degrees and then released. what is the maximum restoring force using harmonic
If the company is presently selling 45,000 units, but plans to spend an additional $108,000 on an advertising program, explain how many additional units must the company sell to earn the same net income it is now making?
a sheet of glass has nred 1.52 and nviolet 1.55. a narrow beam of white light is incident on the glass at 30 degrees.
A skier of mass 70kg starts on top of a frictionless hill of height 10m. Once the skier reaches the bottom the snow is mixed with sand and no longer frictionless. how far will the skier travel before he stops
A cannon tilted up at a 30° angle fires a cannon ball at 65 m/s from atop a 12 m high fortress wall. What is the ball's impact speed on the ground below
A cannonball is shot (from ground level) with an initial horizontal velocity of 39.0 m/s and an initial vertical velocity of 27.0 m/s. What is the initial speed of the cannonball
A high-diver of mass 70 kg jumps off a board 10 m above the water. If, 2 s after entering the water his downward motion is stopped, what average upward force did the water exert on him
An object of mass 5.26 kg is released from rest and drops 1.95 m to the floor. The collision is completely inelastic. How much kinetic energy is lost during the collision
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