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the amusement park ride is going to rotate passengers around a vertical axis such that the supporting cables make a theta= 30 degree angle which vertical.
a) Find the needed rate of rotation of the ride.
b) Find the tension in the supporting cable if the combined mass of the chair and its passenger is 80 kg.
an electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate, What is the kinetic energy of the electron just as it reaches the positive plate
A steel cable is to support an elevator whose total (loaded) mass is not to exceed 3100 kg. calculate the diameter of cable required
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 443 Hz when the train is approaching him.
An electric motor with 3W of power is used to lift a .2 kg mass a height of .5 meters in 3.0 seconds
A transformer with a turns ratio (secondary/primary) of 1:15 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.
How far in front of the cattle should the pilot release the hay so that the bales will land at the point where the cattle are stranded.
A drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first springs, determine the weight of the block hanging from the third spring
The expanding gases that leave the muzzle of a rifle also contribute to the recoil. A .30 caliber bullet has mass 7.20×10?3kg, Find the momentum of the propellant gases in a coordinate system attached to the earth as they leave the muzzle of the rifl..
(1) A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. (i) Compute the frequency with which the wheel spins (ii) Compute the angular speed of the wheel. (iii) Comp..
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
Write down the original position of the system
a bowling ball rolls across a horizontal roof with a speed of 8.57m/s If the roof is 12.5m/s above ground how far from the base of building will the ball land
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