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A circus clown weighs 900 N. The coefficient of static friction between the clown's feet and the ground is 0.4. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum pulling force that the clown must exert to yank his feet out from under himself?
A 2200 kg car is moving at a speed of 30.0 m/s. Determine the stopping distance (in meters) if the brakes supply a force of 3500 newtons
A stone thrown upward from the top of a 100ft cliff at 150ft/s eventually falls to the beach below. (For this problem take the acceleration because of gravity to be -32 ft/s^2; take upwards to be a positive direction.) How long does it take the st..
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^?2cm, Find its speed (vfinal) when it strikes the anode
The potential at the center of a uniformly charged ring is 44kV, and 15.0 cm along the ring axis potential is 30kV. Find the ring's radius and its total charge.
Two satellites are in circular orbits around a planet that has radius 9.00*10^6 m. One satellite has mass 77.0kg , What is the orbital speed of this second satellite
A 50 kg ballet dancer stands on her toes during a performance with four square inches (26.0 cm2) in contact with the floor. What is the pressure exerted by the floor over the area of contact (a) if the dancer is stationary and (b) if dancer is lea..
which the tortoise wins in a photo finish? suppose that, when moving, both animals move steadily at their respective maximum speeds.
Define the velocity and the potential energy of an object briefly.
What is the fundamental resonant frequency of the air column if the velocity of sound in the air is 340 m/s.
Two charges of +0.250 C are placed at the points (1.25 mm, 0) and (-1.25 mm, 0). A third charge of -0.450 C is placed at the origin. a. What is the electric field at the point (0, 2.20 mm)? b. At what point on the y-axis will E be zero? Show graph..
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration
A cable 24 m long and 1.5 mm radius is stretched by a force of 550 N. If the length after stretching is 24.05 m, what is Young's modulus for the cable
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