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A hoop of radius 0.5 m and mass 0.8 kg is rolling without slipping at a speed of 20 m/s toward an incline of slope 30o. How far along the incline will the hoop roll? Assuming it rolls with out slipping. Answer 81.5 m
A 297-kg motorcycle is accelerating up along a ramp that is inclined 30.6° above the horizontal. Find the magnitude of the motorcycle's acceleration
A long, current-carrying solenoid with an air core has 1670 turns per meter of length and a radius of 0.0194 m. What is the mutual inductance of this system?
An electron and a positron, each moving at 3.0 x 10^5m/s, collide head on, disappear, Determine the energy and momentum of each photon
A pair of closely spaced parallel conducting plates, charged with equal and opposite electric charges, produces a uniform electric field in the region between them. What must the strength of the electric field be
A uniform diving board, of length 5.21 m and mass 50.4 kg, is supported at two points; What is the force acting on the board due to the right support when a diver of mass 62.9 kg stands at the end of the board over the water
A submarine dives to a 50-m depth in the ocean. What is the gauge pressure at this depth
A 10,000 kg empty railroad car moving at 3 m/s collides with a loaded railroad car weighing 196,000 N and couples with it
A flight attendant pulls hero 70 N flight bag a distance of 253 m along a level airport floor at a constant velocity. The force she exerts is 40N at an angle of 52.0 degrees above the horizontal.
A person pushes a 20 kg shopping cart at a constant velocity for a horizontal distance of 22 m. What is the work done by the gravitational force
A wind turbine with a rotor diameter of 50 m is rated at 2500 kW at a hub height wind speed of 10 m/s. Calculate the number of hours per year that the wind is below the cut-in speed
How much would it cost just to keep the hot water inside the heater for one week? d)Suppose that you wrap the hot water heater on all sides with a 10 cm thick blanket of fiberglass insulation which has a thermal conductivity of 0.04 W/(m K).
Consider a square loop of wire (sides of 0.25 m) with a resistor included. A bar magnet with the north end up front is approaching the closed loop and thus induces a current. what is the rate of energy dissipation across the resistor
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