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Now, three masses m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2 kg hang from three identical springs in a motionless elevator. The springs all have the same spring constant that you just calculated above.(k=253.16) the elevator is moving downward with a velocity of v = -2.8 m/s and also accelerating downward at an acceleration of a = -3.0 m/s2. What is the distance the MIDDLE spring is extended from its unstretched length? What is the distance the TOP spring is extended from its unstretched length?
Josh starts his sled at the top of a 3.0 m high hill that has a constant slope of 25°. After reaching the bottom, he slides across a horizontal patch of snow. How far from the base of the hill does he end up
A rope and two masses are suspended from the ceiling of an elevator which is accelerating downward at 2.8 m/s^2. find the tension in the rope connecting the two masses
A refrigerator uses an ideal Carnot cycle to cool its interior. The outside air has a temperature of 304 K, What is the coefficient of performance of this refrigerator
Suppose that the electric potential outside a living cell is higher than that inside the cell by 0.069 V. How much work is done by the electric force
An asteroid is discovered to have a tiny moon that orbits it in a circular path at a distance of 103 km and with a period of 47.0 h. The asteroid is roughly spherical (unusual for such a small body) with a radius of 24.9 km.
An electric motor rotating a workshop grinding wheel at a rate of 1.10 102 rev/min is switched off, How long does it take for the grinding wheel to stop
Suppose the skin temperature of a naked person is 34.3 °C when the person is standing inside a room whose temperature is 21.3 °C. Assuming the emissivity is 0.673, find the net loss of radiant power from the body
Two identical uniform poles of mass 50 kg and linear mass density 15 kg/m are supported by pivots 2 m apart on level ground. what angle do the poles make with the vertical
Monochromatic light at 441 nm is normally incident on an opaque film having a single slit of width 0.02 mm. What is the highest order diffraction minimum produced
Consider a rectangular swimming pool of depth 2.7 m with a width and length of 13 m. What is the force exerted by the water on one of the sidewalls of the pool
q1. an airplane has a mass of 31000 kilos and takes off under influence of a constant net force of 37000 nektons. what
In a graphing calculator, there are four AAA batteries, which together provide a potential difference of 1.5 V and a total of 6.0 W·h of energy. what was the average current through the calculator
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