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What is the minimum number of 65-Ω resistors that must be connected in a parallel in order to produce an equivalent resistance of 11-Ω or less?
Two blocks are connected by a light cord. One block, of mass 4kg, sits on a horizontal table with static and kinetic coefficients of friction of 0.6 and 0.4, respectively, whereas the other block, of 2 kg mass, hangs over a frictionless light pull..
Two Skaters collide and hold on to each other on a frictionless floor. find direction of the velocity of these skaters after the collision
The woman then starts walking clockwise around the rim at .75 rad/s. in what direction and with what angular speed does the turntable rotate.
A yo-yo has a rotational inertia of 970 g·cm2 and a mass of 104 g. Its axle radius is 3.15 mm, What is the magnitude of its linear acceleration
Dan is gliding on his skateboard at 4.00 m/s. He suddenly jumps backward off the skateboard, How fast is Dan going as his feet hit the ground
on a sphere with radius a there is an electric charche sigmasigmazerocostheta. determine the electrostatic potential
A person pushes horizontally with a force of 220 N on a 66 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.28. What is the magnitude of the frictional force
The top of a tower much like the leaning bell tower at Pisa, Italy, moves toward the south at an average rate of 1.4 mm/y, what is the average angular speed of the tower's top about its base
If the greatest pressure crustal rock can sustain before crumbling is 1.4×109 , find the maximum depth of the Earth's crust
a 90.0 kg box is pushed by a horizontal force f at constant speed up a frictionless ramp which makes an angle of 38.0
In 1993 a giant 400-kg yo-yo with a radius of 1.5 m was dropped from a crane at height of 57 m, estimate its linear speed at the end of the fall
As part of a safety investigation, two 1200 {rm kg} cars traveling at 24 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 {rm s} to stop, and (b) car that hits a..
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