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An elevator can lift a 113 N aircraft a distance of 28 meters in 10 s. what is the power output of the elevator?
What was the displacement of the spring. An elevator and its load have a combined mass of 1400 kg. Find out the tension in the supporting cable when the elevator, originally moving downward at 12 m/s, is brought to rest with constant acceleration i..
The temperature of 1.5 kg of ethanol is 37c. What would the final temperature be if 80 000J of energy as heat is added to the ethanol.
Calculate the final equilibrium temperature assumning no heat loss after mixing occurs.
if the airplane somehow continues to fly as if nothing happend, where is the engine relative to airplane at the moment the engine hits the ground.
A charge q= +5.80 uC is located in the center of a regular tetrahedron, Find the total electric flux through the tetrahedron, the electic flux through one face of the tetrahedron
A coffee filter of mass 1.2 grams dropped from a height of 3 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did air molecules gain from the falling coffee filter.
A simulated bungee jumper falls off a ledge. The plot below shows the force the bungee cord exerts on the jumper as a function of distance from the ledge. estimate the work done by the bungee cord
Two particles with masses 2m and 6m are moving toward each other along the x axis with the same initial speeds vi. Find the final speeds of the particles
A parallel-plate capacitor is formed from two 3.60cm × 3.60cm electrodes spaced 2.70mm apart, What is the charge (in nC) on each electrode
Dan is gliding on his skateboard at 4.00m/s . He suddenly jumps backward off the skateboard, How fast is Dan going as his feet hit the ground
A coiled telephone cord forms a spiral with 74.0 turns, Determine the self-inductance of one conductor in the unstretched cord
The loaded cab of an elevator has a mass of 1.7 x 103 kg and moves 239 m up the shaft in 19 s at constant speed. At what average rate does the force from the cable do work on the cab.
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