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A sledge loaded with bricks has a total mass of 18.6 kg and is pulled at constant speed by a rope inclined at 19.6° above the horizontal. The sledge moves a distance of 20.4 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500.
How much work is done by the rope on the sledge?
a pelican flying along a horizontal path drops a fish from a height of 5.4m. the fish travels 8.0m horizontally before
A dead battery of 10v has an internal resistance of 1 ohms and is connected in parallel with jumper cables to another car with a 12v battery with internal resistance of 0.01 ohms
a man with mass m1 61 kg stands at the left end of a uniform boat with mass m2 168 kg and a length l 2.6 m. let the
The systems shown below are in equilibrium with m = 6.10 kg and θ = 35.0°. If the spring scales are calibrated in newtons, what do they read? Ignore the masses of the pulleys and strings and assume the pulleys and the incline are frictionless.
A small object with mass 0.200 kg moves with constant speed in a vertical circle of radius 0.500 m. It takes the object0.150 s to complete one revolution, What is the translational speed of the object
Polymer diffusion and Calibration of an optical tweezer
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and returns the shot with the ball traveling horizontally at 42.0 m/s, What work does the racket do on the ball
A novice skier, starting from rest, slides down a frictionless 35 degree incline whose vertical height is 185m. How fast is she going when she reaches the bottom.
A 1200kg automobile travels at 90km/h. What is its kinetic energy? What net work would be required to bring it to a stop
In reality, the COP of the heat pump will only be 60 percent of the ideal value. What is the minimum power of the electric motor when the COP is 60 percent of the ideal value
You are doing exercises on a Nautilus machine in a gym to strengthen your deltoid (shoulder) muscles. If you have set the tension in the cable of the machine to 33.0 N on each arm, what is the tension in each deltoid muscle if you hold your outstre..
A driver in a car travelling at the speed of 78 km/h sees a cat km away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 99 m.
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