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In raising a 6400-N piano with a pulley system, the movers note that, for every 3.0 m of rope pulled down, the piano rises 0.26 m
Ideally, find the force required to lift the piano.
Express your answer to two significant figures and include the appropriate units.
A 89 kg man lying on a surface of negligible friction shoves a 88 g stone away from himself, giving it a speed of 3.5 m/s. What speed does the man acquire as a result
A mass (m1 = 3.0 kg) with initial velocity V0 = 2.0 m/s strikes a mass-spring system (m2 = 1.0 kg) initially at rest but able to recoil. The spring is massless with spring constant k = 7.5 N/m. There is no friction. Is momentum conserved in this c..
A 0.520kg glider on an air track is attached to the end of an ideal spring with force constant 453N/m; it undergoes simple harmonic motion with an amplitude of 4.10×10?2m. Compute the maximum speed of the glider
performing an experiment similar to millikans oil drop experiment a student measures these charge magnitudes.3.26
When its 75kW engine is generating full power, a small single engine airplane with a mass of 700 kg gains altitude at a rate of 2.5 m/s. what fraction of the engine power is being used to make the air plane climb.
On a very hot day with an air temperature of 105°F, the wet-bulb thermometer of a psychrometer records 102°F.
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.14 mT. If the speed of the electron is 1.48 107 m/s, find the time interval required to complete one revolution
A 77.5-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is accelerating upward with an acceleration of 2.46 m/s2
Find the magnitude of the magnetic field at a point 32.5 centimeter from a long, thin conductor carrying a current of 3.50 Amp
A 0.450-kg ice puck, moving east with a speed of 5.26m/s , has a head-on collision with a 0.950-kg puck initially at rest. What is the speed of the 0.950-kg puck after the collision
A small mass m1 = 0.001 kg initially moving with speed v1 = 2001 m/s collides with and sticks to a larger mass m2 = 1.000 kg initially at rest. State the law of the conservation of momentum
One radiator has a volume of 0.09mt³. It contains saturated vapor at a temperature of 100°C. find The total mass of vapor in the radiator
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