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A figure skater begins spinning counterclockwise at an angularspeed of 4.7 π rad/s. during a 4.9 s interval, she slowly pulsher arms inward and finally spins at 8.2 π rad/s. what is heraverage angular acceleration during this time interval? answer inunits of rad/s2.
A hydraulic ram 200mm in diameter and 1.2 m long moves wholly within a concentric cylinder 200.2mm in diameter, What is the viscous force resisting the motion when the ram moves at 120mm . s-1
The receiver has a 22 yard lead from the quarter back by the time he throws the ball. How fast must he run in order to catch the ball when it lands
An undersea research chamber is spherical with an external diameter of 3.50 . The mass of the chamber, when occupied, is 21900 . It is anchored to the sea bottom by a cable. What is the buoyant force on the chamber? -Found to be 224410.2 N ***What is..
A truck driver has a shipment of apples to deliver to a destination 550 away. The trip usually takes him 10.0 . Today he finds himself daydreaming and realizes 100 into his trip that that he is running 30.0 later than his usual pace at this point. At..
Shooter shoots a bullet horizontally and has muzzle velocity of 460m/s and goes 45.7m. How can you do this with the range equation
A 0.400-kg bead slides on a frictionless, curved wire, starting from rest at pt A, Find the speed of the second bead just after the collision
A car decelerates uniformly and comes to a stop after 10s. The car's velocity was 50 km/h. What was the car's deceleration
A spherical bowling ball with mass m = 4 kg and radius R = 0.108 m is thrown down the lane with an initial speed of v = 8.8 m/s. How far does the bowling ball slide before it begins to roll without slipping
A very bouncy ball is dropped from a height of 2.37 m to an asphalt playground surface and the height of its 5th bounce is measured to be 1.69 m. Find the coefficient of restitution of the ball for a collision with asphalt.
Vector B has magnitude of 8.0 at an angle of -10.0 o from the x-axis. Let C=A+B. Let D=A-B. Let V=2*A-B. What is the x-component of vector C. What is the y-component of vector C.
Compare the kinetic energy of car travelling. Compare the kinetic energy of an 900 kg car travelling at 30 m/s, and a 1,800 kg car at the same speed.
A ball of mass 6.2 kg and radius 8 cm rolls without slipping horizontally at 4.8 m/s and hits a spring attached to a wall. What is the maximum change in length of the spring
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