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A 7kg squirrel walks to the end of a 15 kg board resting on two saw horses. When the squirrel is at the 1m position away from the right end of board, the board just lifts off of the left hand support. How long is the board?
If a car traveling at 66 km/h will skid 22 m when its brakes lock, how far would it skid if it is traveling at 120 km/h when its brakes lock.
A metal object has a net charge of 1.761 x 10-12 C. How many excess or missing electrons does it have
A rope of length L = 5.2 m with a total mass of m = 0.205 kg is tied to a hook rigidly mounted into a wall. What is the height of the pulse that returns
Consider the conical pendulum, a mass on the end of a string, with the other end of the string fixed to the ceiling. what is the speed (in m/s) of the mass as it swings
A hill is covered with snow, and has a slope of 30 degree above the horizontal. The slope is l = 40.m long. How fast is the snowball rolling at the end
An ultralight plane and pilot have a total mass of 168 kg, what is the net force acting on the plane and pilot
A 180g block hangs from a spring with spring constant 6.0 N/m. At the block is 31cm below the equilibrium point and moving upward with a speed of 98.0cm/s. What is the block's position at t = 9s.
A screen is placed 1.30 {rm m} behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.70 {rm cm} wide-that is, two first-order diffraction minima are separated by 1.70 {rm cm}.
The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 48Nm. With what force must you pull
The loaded cab of an elevator has a mass of 3000kg and moves 216-m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on cab.
The "reaction time" of the average automobile driver is about 0.7. Compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 14.6
When a fighter pilot makes a very quick turn, he experiences a centripetal acceleration. What is the minimum radius of curvature that he can take without blacking out
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