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A 15-cm-long, 210 g rod is pivoted at one end. A 22 g ball of clay is stuck on the other end. What is the perios if the rod and clay swing as a pendulum?
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 8 m and, in starting, rotates according to Theta = 0.30 t 2. what is the magnitude of the astronaut's linear speed
Two identical blocks are stacked one on top of the other. What is the maximum horizontal force that can be applied to the lower block without the upper block slipping
Two charged objects experience a mutual repulsive force of 0.86N. If the charge of one of the objects is reduced by half and the distance separating the objects istripled, what is the new force? (Enter the magnitude of the force.)
a yo-yo has a rotational inertia of 1080 gmiddotcm2 and a mass of 140 g. its axle radius is 2.5 mm and its string is
Blocks A (mass 2.00kg) and B (mass 10.00kg) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 2.00 m/s. Find the velocity of each block after they have moved apart
skydiver jumps from airplane they will accelerate rapidly at first but air resistance prevents them from falling faster
A certain Carnot engine produces 200 J of work per cycle, what is the change in entropy of the hot reservoir per cycle
A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.170 .
An athlete at the gym holds a 1.8-kg steel ball in his hand. His arm is 74-cm long and has a mass of 4.00 kg. What is the magnitude of the torque about his muster if he holds his arm straight out, parallel to the floor.
Light propagating in the glass n1= 1.65 wall of an aquarium tank strikes the interior edge of the wall with incidence angle 19.0 degrees. What is the angle of refraction in the water
A man on a tower 49 meter high drops a stone. One second later he throws a second stone after the first. Find with what speed did he throw the second stone
When rebuilding her car's engine, a physics major must exert 450 N of force to insert a dry steel piston into a steel cylinder at a constant velocity. What is the normal force between the piston and cylinder
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