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Q. A box slides down a 36° ramp with an acceleration of 1.26 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.
Q. A parallel-plate capacitor is made from two plates 12.0 on each side and 4.50 apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.40.An 18.0 battery is connected across the plates.
A)What is the capacitance of this combination?B)How much energy is stored in the capacitor?C)If we remove the Plexiglas, but change nothing else, how much energy will be stored in the capacitor?
Two long thin parallel wires 13.0 cm apart carry 32 A currents in the same direction. Determine the magnetic field at point P, 12.0 cm from one wire and 5.0 cm from the other.
A bead with a mass of 0.02 g and a charge of 20nC is free to slide on a vertical rod. At base of the rod is a fixed 20nC charge.
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of water. It takes a time of 2.30s for the boat to travel from its highest point to its lowest, a total distance of 0...
A bullet is fired horizontally from a 100 m, t all building with a speed of 900 m? How long will it take to hit the ground?
A bucket of water is whirled in a vertical circle of radius 90cm,What is the least speed that will keep the water from falling out.
To transmit only portions of an input wave lying on one side of an amplitude boundary, you would use a.
What is the integral from s to p of B dot dL, where an integral is taken along the dotted path shown, first from point P to point R at (x,y) = (0.707d, 0.707d), and then to point S at (x,y) = (0.6d, 0.6d).
What is the speed of the water leaving the nozzle
A child and sled with a combined mass of 49.20 kg slide down a frictionless hill that is 7.38 m high. If the sled starts from rest, what is its speed at the bottom of hill.
An airplane moves 140 m/s as it travels around the vertical circular loop which has a 1 km radius. What is the magnitude of the resultant force on the 70 kg pilot of this plane at the bottom of this loop.
A projectile is launched from the top of a cliff above level ground. At launch the projectile is 35 meters above the base of the cliff and has the velocity of 50 meters per second at an angle 37° with horizontal. Air resistance is negligible.
The flywheel of an engine has a moment of inertia 2.50 about its rotation axis. What constant torque is required to bring it up to the angular speed of 390 in a time of 8.50, starting from rest? What is its last kinetic energy . Discover an angular..
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