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Two large parallel plates are separated by 0.90cm and carry uniform charge densities equal in magnitude and opposite in sign. A proton is between the plates and has an acceleration of magnitude 1.40×10^11m/s^2. Find the magnitude of the charge density on the plates.
what time delay Delta t is necessary. A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds.
A 1.7 kg rolling hoop with a radius of 9 cm rolls without slipping. If the angular speed of the hoop is 2.46 rad/s , compute rotational kinetic energy of the rolling hoop
An air-filled toroidal solenoid has a mean radius of 15.1cm and a cross-sectional area of 4.95cm2, find the least number of turns that the winding must have
A 78 kg circus performer jumps from a 4.20 m height onto a trampoline and stretches it downward 0.3m. suppose that the trampoline obeys Hooke's law.
You roll a ball along the floor for your dog to chase after and catch it. You roll the ball with an initial speed of 15 m/s, how far does the ball go before your dog catches it
A uniform rod of length 0.790 m and mass 14.50 kg is balanced on a sharp edge at 0.650 m from the left end. At the left end hangs a mass of 45-kg and the right end hangs an unknown mass so that the whole assembly is in equilibrium.
A large laser emits an intense pulse of light delivering an energy of 5020J in 1.28×10-2s. how many photons are emitted in this pulse
26g of copper pellets are removed from a 300 C oven and immediately dropped into 110mL of water at 25 C in an insulated cup
At LHC, what force is curving the trajectory of accelerating hadrons, forcing them to pass trillions of times around the tunnel track, before they are collided
Two current-carrying wires are exactly parallel to one another and both carry 3.5 A of current. What is the direction of the magnetic force caused by wire 2 on wire 1
A wire loop of radius 0.3 m lies so that an external magnetic field of magnitude 0.30T is perpendicular to the loop. The filed reverses its direction, and its magnitude changes to 0.20T in 1.5s. Find out the magnitude of the average induced emf in..
A cannonball is dropped from the top of a building. If the point of release is 44.8 m above the ground, what is the speed of the cannonball
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