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A softball player swings a bat, accelerating it from rest to3.5 rev/s in a time of 0.20 s. Approximate the bat as a 2.2 kg uniformrod of length 0.95 m, and compute the torque the player applies to one end of it.
mN
An 87.6 g lead ball is dropped from rest from a height of 5.60 m. The collision between the ball and the ground is totally inelastic. Assuming all the ball's kinetic energy goes into heating the ball, find its change in temperature.
Coherent light with wavelength 590 mm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 m from the slits.
The speed of an object is known to be 3.0 X 108m/s. You measure the velocity of the object during an experiment, find the percent error associated with these two values
The 100 block in 4.7 to reach the floor after being released from rest. What is the mass of the block on the left.
A Marconi antenna, used by most AM radio stations, consists of the top half of a Hertz antenna, What is the height of the Marconi antennas for radio stations broadcasting at 519 kHz
calculate the speed of the block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across the capacitor after the dielectric is removed is measured to be 900 V.
A 10 kg crate is pulled up a 30 degree incline with a rope parallel to the incline. The tension in the rope is 100 N. what is the acceleration of the crate up the incline
If an astronaut dropped a small rock near the surface of Pluto, how far (in m) would the rock fall in 2.4 s
A star has a mass of 1.27 x 1030 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 1.0 x 104light-years, Determine the tangential speed of the star
The position of a rocket sled on a straight track is given as x = a t3 + b t2 + c, What is the sled's average speed between t = 3.48 s and t = 6.92 s
A 73.1-kN car is travelling at 59.9 mph when the driver decides to exit the freeway by going up a ramp. obtain the magnitude of the average drag force exerted on the car
A generator rotates at 95Hz in a magnetic field of 0.025T . It has 650 turns and produces an rms voltage of 180V, What is the area of each turn of the coil
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