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A 54kg ice skater moving at 6.4m/s glides to a stop. Assumingthe ice is at 0deg C and that 50% of the heat generated by frictionis absorbed by the ice, how much ice melts?
The light goes through a second polarizer and exits with an intensity of 225 W/m squared, What is the orientation angle of the second polarizer
When ultraviolet light with a wavelength of 254 nm falls upon a clean metal surface, What is the photoelectric threshold wavelength for this metal
A 2.30-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.40sin(2?t), Find the angular frequency of the driven system
A 12 volt battery is connected to a 2.0 x 10^-5 farad capactior. calculate the amount of charge on one plate of the capacitor.
A pyrex beaker that holds 250 ml of water at 20 degrees celcius is filled to the brim. The system is heated to 40 degrees celcius, how much water (if any) will spill out of the beaker
Tetchnetium is a radioactive isotope that emits a gamma ray with a half life of 6 hours. what fraction of the original dose remains in the body 24 hours after preparation
The escape velocity of a bullet from the surface of planet Y is 1599.0 m/s. Calculate the escape velocity from the surface of the planet X
A tennis ball with a speed of 11.9 m/s is thrown perpendicularly at a wall. what is the average magnitude of acceleration of the ball while it is in contact with the wall
A square coil ( length of side = 24 cm) of wire is placed in a uniform magnetic field that makes an angle of 30 degree with the normal to the plane of the coil. what is the magnitude of the emf induced in the coil
A large, cylindrical roll of tissue paper of initial radius R lies on a long, horizontal surface with the outside end of the paper nailed to the surface. Determine the speed of the center of mass of the roll
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.105 liters per second, At what speed does the water exit the nozzle
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3 , length 79.9cm, Calculate the weight of the rod, w
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