What work lift performs on car after it raised given height
A 1400 kg car, initially at rest, is raised on a hydraulic lift that accelerates upward at 0.9 m/s2. What work does the lift perform on the car after it has been raised 1.8 m?
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A cook uses a microwave to heat a meal. The frequency of radiation is 2.45 x 10^9 s^-1. What is the energy of one mole of photons of this microwave radiation?
How long would it take an identical panel that is also oriented perpendicular to the incoming radiation to absorb the same amount of energy, if it were on an interplanetary exploration vehicle 1.75 AU from the Sun?
The distance between two telephone poles is d = 53.5 m. When a 0.550-kg bird lands on the telephone wire midway between the poles, the wire sags h = 0.195 m. (a) How much tension does the bird produce in the wire? Ignore the weight of the wire.
During the first putt, the ball rolls 5.8 m due east. For the second putt, the ball travels 1.7 m at an angle 20° north of east. The third putt is 0.50 m due north. What displacement (magnitude and direction relative to due east) would have be
What is the molar concentration of the cleaning solution formed when 25.0 L ammonia gas,measured at 31°C and 735 torr, dissolves in enough water to give a final volume of 0.675L?
12.0 N force with a fixed orientation does work on a particle as the particle moves through displacement d= (2.00i - 4.00j + 3.00k) m. What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +
Some steam leaves the turbine at a pressure of 1 MPa and enters the open feedwater heater. Determine the fraction of steam extracted from the turbine and the thermal efficiency of the cycle.
Imagine that you are observing a spacecraft moving in a circular orbit of radius 500000 around a distant planet. You happen to be located in the plane of the spacecraft's orbit. You find that the spacecraft's radio signal varies periodically in wa
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