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A 54kg ice skater moving at 6.4m/s glides to a stop. Assuming the ice is at 0deg C and that 50% of the heat generated byfriction is absorbed by the ice, how much ice melts?
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
A student m = 79 kg runs at a velocity vi = 2.2 m/s before jumping on a skateboard. After jumping on the board the student has a velocity vf = 1.69 m/s. What is mass of skateboard
A long solenoid of length L, cross-sectional area A, having N1 turns, has wound about its centre a small coil of N2 turns. Calculate the mutual inductance if L=1 m, A=10 cm2, N1=1000, N2=20.
The magnetic field of a cylindrical magnet that has a pole-face diameter of 3.3 cm can be varied sinusoidally between 29.6 T, At a radial distance of 2.0 cm, what is the amplitude of the electric field induced by the variation
0.5 kg of saturated vapor (H2O) at 1.5 bars is contained in a piston-cylinder device. Heat transfer in the amount of 150 kJ to the steam occurs and some work is done on the steam by a impellor. At the end of this process the steam is at 1.5 bars and ..
A transverse electromagnetic plane wave with a frequency of 2.84 MHz travels directly away from you (- z direction). At time t = 0, your magnetic field detector measures a magnetic field of 4.57 × 10-8 Tesla pointing down (- y direction) which fur..
A 950-kg satellite orbits the Earth at a constant altitude of 105-km. What is the change in the system's kinetic energy
What is the angular momentum of the moon about the Earth, The mass of the moon is 7.35 x 10^22 kg, the center-to-center separation of the Earth
For a patient, a doctor prescribes glasses with a converging lens having a power of 4.0 D What is the location of her eye's near point
You have a spring attached to the bottom of a container. The spring is aligned vertically. The container is filled with water (density 1.0 x 103 kg/m3). How much does the block compress the spring
A tennis player, when performing a serve, applies an average force to a tennis ball of 525 N to a 55 g ball. What is the speed of the ball as it leaves the racket
A 10 kg door that is 1.0m wide and 2.5m tall is supported by two hinges,each of which is 10 cm from the top(or bottom)of the door. what is the force on each hinge
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