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A circular loop made from a flexible, conducting wire is shrinking. Its radius as a function of time is r = roe-Bt. The loop is perpendicular to a steady uniform magnetic field B. Find an expression for the induced E in the loop at time t.
A simple of helium gas occupies 5 liters at 22degree C and a gauge pressure of 200,000 pascals. What is the mass of the gas
an ice puck of mass m revolves on an icy surface in a circle at speed v at the end of a horizontal string of length L. write the equation for centripital force
2750 g of lead at 120 degrees C is added to .150 kg of 85 degrees C water. The heat of vaporization for water is 22.6 X 10^5 J/kg. How much water (in kg) evaporates
A cue ball, which has a mass of 170 g, collides head-on with a stationary 8-ball, which has a mass of 160 g. The 8-ball then takes off at 120 cm/s. What was the velocity of the cue ball before and after collision
The hot reservoir for a Carnot engine has a temperature of 943 K, while the cold reservoir has a temperature of 495 K. The heat input for this engine is 5280 J. The 495-K reservoir also serves as the hot reservoir for a second Carnot engine.
Att= 0 an electron crosses the positivey-axis (sox= 0) at30cm from the origin with velocity6.105m/s in the positivex-direction. It is in a uniform magnetic field.
a unit cell of diamond is a cube of side a with carbon atoms at each corner at the center of each face and in addition
A wire whose resistance si R120ohm is cut in 7 equally longpecies, which are then connected in parallel way. What is the resistance of the parallel contribution
two 4.0 cm times 4.0 cm electrodes spaced 2.0 mm apart form a parallel-plate capacitor. inside the capacitor the
A pilot wants to fly due north a distance of 125 km. The wind is blowing out of the west at a constant 35 km/h. If the plane travel at 175 km/h, how long would the trip take.
A 3.0m long rigid beam with a mass of 130kg is supported at each end. How much upward force does each support exert on the beam
A diver springs upward from a board that is 5 meters above the the water. determine her peak height measured above the water
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