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Sand from a stationary hopper falls onto a moving conveyor belt at the rate of dm/dt = 5 kg/s as shown. The conveyor belt is supported by frictionless rollers and moves at a constant speed of v = 0.75m/s under the action of a constant horizontal external force ~Fext supplied by the motor that drives the belt.
a. Find the sand's rate of change of momentum in the horizontal direction.
b. Find the force of friction exerted by the belt on the sand.
c. Find the power required by ~Fext.
Physics two skaters with masses of 65 kg and 45 kg, respectively stand 8.0 m apart each holding one end of a rope. If they pull themslevles along the the rope until they meet explain how far does each skater travel?
If the power output of a 630 kHz radio station is 50.0 kW, how many photons per second are produced
Suppose you want to run some apparatus that is 85 from an electric outlet. What voltage will be applied to your apparatus
A circuit consists of a resistor in series with an inductor and an ac generator that supplies an rms voltage of 115 V. Find the average power dissipated in the circuit
Force F = (-5.0 N) i hat + (5.0 N) j hat acts on a particle with position vector r = (-3.0 m) j hat + (5.0 m) k hat. What is the angle between the directions of force and torque
write a 1000- to 1200-word paper comparing the personality theories of freud jung rogers and maslow. outline how each
The speed of the block at the bottom of the track is vA = 13.1 m/s, and block experiences an average frictional force of 7.00 N while sliding up the track.
A 750g aluminum pan is removed from the stove and plunged into a sink filled with 10.0kg of water at 20.0C. What was the initial temperature of the pan
A particle contains the quark combination: u b, What is the charge of the particle and What is the baryon number of the particle
A particle moves horizontally in uniform circular motion, over a horizontal xy plane, What are the coordinates of the center of the circular path
The four tires of an automobile are inflated to a gauge pressure of 2.1 105 Pa. Determine the weight of the automobile
Suppose now that the apparatus is sealed, and the temperature rises to 40.0o C. Find the pressure inside the apparatus now
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