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Q. A pitcher throws a curveball that reaches the catcher in 0.55s. The ball curves because it is spinning at an average angular velocity of 280rev/min (assumed constant) on its way to catcher's mitt. What is the angular displacement of baseball (in radians) as it travels from the pitcher to the catcher?
Find an angular velocity of the tire at the marker. Find also the linear speed of the point of contact of the tire with the pavement at the marker.
Two physical pendulums ( not simple pendulum) are made from sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except one is made of wood (mass = 0.17 kg )and the other of metal (mass =..
Two mirrors meet at a 127° angle. If light rays strike one mirror at 40° as shown, at what angle ? do they leave the second mirror.
What friction torque is required to reduce its angular speed from 80.0 to 51 in 27.
A plane leaves the airport in Galisto and flies 170 km 68 degrees east of north and after that changes direction to fly 230 km at 48 degrees south of east, after that it makes an immediate emergency landing in a pasture. When airport sends out a r..
A bicycle wheel of mass M (assumed to be concentrated at its rim) and radius R is mounted horizontally so it may turn without friction on a vertical axle. A dart of mass mo is thrown with velocity vo above and sticks in the tire.
find the ratio of vb to vr, where vr is defined above and vb is the boats speed with respect to the water.
A bartender slides a beer mug at 1.30 m/s towards a customer at the end of a frictionless bar that is 2.0m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar.
How high is the top of the ski lift relative to the base.
Assume the masses described in the preceding problem are 1kg and 100kg in that order. Compare the accelerations while they are interchanged.
What mass of water at 29.0°C added to a Styrofoam cup containing two 60.0 g ice cubes from a freezer at -16.0°C will result in a final temperature of 5.00°C for the drink? Explain it.
A particle with a charge of q = -5.00 nC is moving in the uniform magnetic field of vec{B}=( -1.20 T ) hat{z}. The magnetic force on the particle is measured to be vec{F}= ( -7.60×10-7 N )hat{y}.
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