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A golfer swings his club of radius 1.2 m at an angular velocity (w) of 340º/s. What is the linear velocity of the club head? What is the linear velocity of the club head if the radius is 0.8 m?
A cart has a mass of 851.8 g the attached string has a tension of 0.36 N and a displacement of 40.9 cm. what is the kinetic energy of the cart
A large parallel plate capacitor has plate separation of 0.90 cm and plate area of 361 cm2. How much work is done on the capacitor as the plate separation is increased to 1.80 cm
two divers jump from a 5- platform. one jumps upward at 1.50 and the second steps off the platform as the first passes
A rock is suspended from a scale reads 20.0 N. A beaker of water ( having a density of 1000 kg/m^3) is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock?
A turntable is a uniform disc of mass 1.2 kg and radius1.3 *10^-1 m . The turntable is spinning at a constant rate of f0 = 0.5 Hz. What is the magnitude of the frictional torque
A boat observed by an observer on the shore moves at right angle to the motion of a stream at 4m/s. what is the speed of the boat with respect to the water
Why is the normal force of an object zero at the top of a hill (such as the hill of a roller coaster)? I'm doing a circular motion unit and I found a few problems where this is the case, and I was wondering how it works.
A satellite is in orbit at a height of 600 km above the Earth's surface. Find the orbital period of the satellite
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
A 20 gram bullet is fired horizontally into a 400 gram block of wood suspended like a ballistic pendulum. Find the velocity of the bullet just before the impact
A total of 2.83·106 electrons are placed on an initially uncharged wire of length 1.07 m. What is the magnitude of the acceleration of a proton
A rock weighing 8528 N rock with a volume of 24 L is completely submerged in mercury. The density of mercury is 13.6 kg/L. Determine the buoyant force on the rock
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