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A 290-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 25° with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
A spider has a mass of 0.70-g and is hanging from rest on a 20-cm long thread of 0.0020-mm diameter of silk, If the string is whirled in a circle at a rate of 2 revolutions per second, what is the minimum and maximum time for vibrational information..
A 120 kg scaffold is 6.6 meters long. It is hanging with two wires, one from each end. A 540 kg box sits 1 meter from the left end. What is the tension in the right hand side wire
A 19.0 -kg box is released on a 37 incline and accelerates down the incline at 0.30 m/s^2. Find the friction force impeding its motion
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. Calculate the angular acceleration of the pottery wheel
A fully charged capacitor with a voltage of 120 V is discharged through a resistor. What is the voltage across the capacitor at the end of five time constants
You are to drive to an interview in another town, at a distance of 298 km on an expressway. What would be the least speed needed for the rest of the trip to arrive in time for the interview
How many electrons must be removed from each of two 4.4-kg copper spheres to make the electric force of repulsion between them equal in magnitude to the gravitational attraction between them?
To tighten a bolt, you push with a force of 78 N at the end of a wrench handle that is 0.27 m from the axis of the bolt. what force do you have to exert to achieve the same torque
An electron starts from rest 2.88 cm from the center of a uniformly charged sphere of radius 1.99 cm. how fast will the electron be moving when it reaches the surface of the sphere
A proton is at the origin and an electron is at the point x = 0.42 nm, y = 0.39 nm. Find the electric force on the proton
A man drops a baseball off of the top of the Empire State Building. If an action force is the pull of the Earth on the ball, then what is the reaction force.
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained at 39.0 oC
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