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Given two masses, m1 = 18 kg and m2 =12 kg, m1 is moving with avelocity v1 colliding with m2, which is suspended by a string of length 7 m. The two masses are stuck together as the result of thecollision. The compound system swings to the right, passes point Bas shown in the figure, and stops at the horizontal level. The acceleration of gravity is 9.8 m/s2. Find the kinetic energy K of the compound system immediately after the collision.
A 0.954 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. What is the average current supplied to the car's motor
A brass rod 25.0 cm long and 1 cm in diameter is welded end to end to a copper rod 25.0 cm long and 0.50 cm in diameter. What is the temperature at the brass / copper junction
Six mass pieces of 100g each are placed on a mass holder of 140g which is hung from a string. Analyse the tension in the string.
Determine the density of the proton.
Lilly is unloading15 kg bottles of water from her delivery truck when one of the bottles tips over, What is the force that moves the bottle down the ramp
Jimmy and his cart (with a combined mass of 200 kg) are moving along with a velocity v1 = 20 m/s i. What is the velocity of the combined system of two carts plus occupants after the collision
A toy train engines (2.5Kg) is moving 0.25m/s when it collides with a car (1.6Kg) moving 0.15 m/s in the same direction, Find the speed of the engine-car combination as they move off together
X-rays with initial wavelength 0.0665 nm undergo Compton scattering. At which scattering angle is this wavelength observed
A proton is released in a uniform electric field, and it experiences an electric force of 7.38×10?14 toward the south. What is the magnitude of the electric field?
you want to lift a 500-lb object with a lever. you can place a falcrum under a long board a distance of 1.5 ft from the object. how long is the board (total length) needed to lift the object
A transformer has a primary coil with 1200 turns and a secondary coil with 225.0 turns. what is the voltage output from the secondary coil
A disk7.97cm in radius rotates at a constant rate of1160rev/min about its central axis. Determine the radial acceleration of a point on the rim
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