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A charge of 24.5uC is located at (4.40m, 6.22m), and a charge of-11.2uC is located at (-4.50m, 6.75m). What charge must be locatedat (2.23m, -3.31m) if the electric potential is to be zero at the origin?
A bungee jumper has a mass of 68 kg. If he jumps off a bridge that is 200. m high and uses a bungee cord that is 75 m long with a spring constant of 20. N/m
A photographer uses his camera, whose lens has a 70mm focal length, to focus on an object 4.5m away. In which direction must the lens move to focus on this second object
What is the average energy of the system after many measurements
Consider an isolated hydrogen atom of mass 1.66x10^(-27) kg.Let an upwardly directed laser beam emitting 1 eV photons be focused in such a way that the full momentum of each of its photons is transferred to the atom. Find the average upward force ..
A vehicle with a mass of 2200kg moving with an initial speed of 24.6 m/s hits a utility pole and comes to a stop. What acceleration does the car encounter
A box is pushed a distance d along a ramp at a constant speed by a horizontal force, Fa. The mass of the box is m. The ramp is inclined at an angle of ? above the horizontal.
A 11.4-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.1 m/s, find the rotational kinetic energy
A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, find the average force exerted on the ball by the club
The triceps muscle in the back of the upper arm extends the forearm. What is the moment of inertia of the boxer's forearm
1.nbspnbspnbspnbspnbsp to analyze a series ac circuit containing an inductor l and a resistor r using ohms law and
At time a grinding wheel has an angular velocity of 22. It has a constant angular acceleration of 28.0 until a circuit breaker trips at time = 1.60 . From then on, the wheel turns by an angle of 438 as it coasts to a stop at constant angular decel..
an evacuated spherical diving bell containing a camera is in the ocean at a depth of 115 m. it has a flat transparent
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