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A horse pulls a cart with a force of 61 lb at an angle of 25° above the horizontal and moves along at a speed of 8.5 mi/h.
(a) How much work (in ft lb) does the force do in 14 min?
(b) What is the average power (in horsepower, hp) of the force?
An explosion breaks an object into two pieces, one of which has 1.80 times the mass of the other. If 10000 J were released in explosion, how much kinetic energy did each piece acquire.
A sample of CO2 has a mass of 50 g. What is the number of molecules of carbon dioxide in the 50 g sample
A piece of glass has a temperature of 85.8° C. Liquid that has a temperature of 43.0° C is poured over the glass, completely covering it, determine the specific heat capacity of the liquid
A total charge Q = -4.6 x10^-6 C is distributed uniformly over a quarter circle arc of radius a = 7.4 cm, What is the linear charge density along the arc
A bicycle wheel has an initial angular velocity of 16 radians/second and acceleraties to a final angular velocity of 42 radians/second, Determine the time required for this motion to occur
A 50 kg bag of sand ar 25 degree C falls 10 m onto the pavement and comes to an abrupt stop. What is the dissapative work done on the sand
The rotor (flywheel) of a toy gyroscope has mass 0.140 kg. Its moment of inertia about its axis is The mass of the frame is 0.0250 kg. Find the upward force exerted by the pivot
Find out the magnitude of that push.
At what temperature is the speed of sound in helium (ideal gas, = 1.67, atomic mass = 4.003 u) the same as its speed in oxygen gas at 11.0 oC? The speed of sound in oxygen at 11.0°C is 322 m/s.
A ball is thrown horizontally from the roof of a building 47.0m tall and lands 21.3m from the base. What was the ball's initial speed
If the loop's diameter changes from 24.0cm to 5.8cm in 0.67s , what is the direction of the induced current, If the coil resistance is 2.6? , what is the average induced current
A group of students determined that the following points were upon the best fit line for a graph of W2 vs. Determine the total mass of the system
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