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A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. The ball leaves this surface 0.50 s later with a velocity of 2.0 m/s directed 60° above the horizontal. What is the magnitude of the average resultant force on the ball?
Water is moving with a speed of 4.7 m/s through a pipe with a cross-sectional area of 4.3 cm2. The water gradually descends 7 m as the pipe increases in area to 8.2 cm2.
A 3.0 m long rigid beam with a mass of 105 kg is supported at each end. How much upward force does each support exert on the beam
An X-ray photon with a wavelength of 0.260nm scatters from a free electron at rest. Find the initial momentum of the photon
A tennis ball of mass 57 g is traveling in the + x direction with a speed of 38 m/s. What is the change in momentum of the ball during the hit
Refrigerant 22 is used as the working fluid in an ideal vapor-compression refrigeration cycle. Saturated vapor enters the compresssor at -40°C at a flow rate of 1 kg/s. What is the power input to the compressor
Find the force to keep object moving.
What is the magnitude of the force that maintains circular motion acting on puck.
A 2 kg ball is thrown straight up in the air. What is the net force acting on the ball when it reaches its maximum height?
For the spherical distribution: A conducting spherical shell of inner radius b and outer radius c is concentric with a small metal sphere of radius a
2000 kg elevator is accelerated uniformly from rest to 4 m/s in a time of 90s. find the change in mechanical energy of the elevator
Three capacitors, C1, C2 = 2C1 and C3 = 3C1 are connected in parallel to a voltage source of value V. What is the voltage across each capacitor when all three switches are closed
Uniform plate of height 1.980 m is cut in the form of a parabolic section. Find the moment of inertia of the plate
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