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An object moves in a circular path at a constant speed. What is the direction of the net force acting on the object?
A. The net force points in the same direction as the motion of the object.B. The net force is directed toward the center of the circular path.C. The net force is zero because the object is moving with a constant speed.D. The net force is directed away from the center of the circular path.E. The net force points in the direction opposite to the motion of the object.
A glass window with an area of 1.3m^2 is 4mm thick. What is the rate of heat of flow through the glass if one surface is at -5 degree celsius and the other is at 10.5 degree celsius
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 52.0 m/s, What is the work done on the ball by the racket
If the initial temperature of the horseshoe is 450 °C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Presume no heat is exchanged with the surroundings.
If a 68.3 kg person were travelling at 0.960c (where c is the speed of light), what would be the ratio of the person's actual kinetic energy to the person's classical kinetic energy
A blimp is motoring at constant altitude. The airspeed indicator on the blimp shows that its speed relative to the air is 20km/h, what is the velocity (magnitude and direction) of the blimp relative to the ground
A polar explorer pulls a sled on dry snow (the coefficient of kinetic friction is 0.12 for sled on snow). The rope attached to the sled pulls at an angle of 9° above the horizontal and the explorer pulls with with 600 N of force. The sled has a to..
A point source emits sound waves with a power output of 130 W. At what distance will the decibel reading be 120 dB, which is noise level of a loud indoorrock concert?
Write x-versus-t equations of motion
A 20.0 , 12.0 , and 8.00 resistor are connected in parallel to an emf source. A current of 6.00 A is in the 12.0 resistor. Calculate the equivalent resistance of the circuit. What is the potential difference across the source? Answer in units of V
Two waves traveling in the same direction combine. The constituent waves have identical angular wave numbers, find the phase difference between the constituent waves
A 3m long ladder leans against a frictionless wall. The coefficent of static friction between teh ladder and the floor is .40. What is the minimum angle the ladder can make
A woman stands on a bathroom scale in a motionless elevator. When the elevator begins to move, Find the direction of the acceleration
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