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A laser beam of power 4.60 W and diameter 2.6 mm is directed upward on the circular face ( diameter of the face < 2.6mm) of a perfecting reflecting cylinder. The laser beam is able to levitate the cylinder in mid air. If the density of the cylinder is 1.2 Kg/m3, What is the height h of the cylinder?
The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end, What is the skier's launch speed
A 800 kg rocket sled can be accelerated at a constant rate from rest to 1300 km/h in 2.4 s. What is the magnitude of the required net force
One particle has a mass of 4.59 x 10-3 kg and a charge of +7.03 ?C. A second particle has a mass of 8.88 x 10-3 kg and the same charge. Find the initial separation between the particles
Jane looking for tarzan, is running at top speed (5.7m/s) and grabs a vine hanginf vertically from a tall tree in the jungle. How high can she swing upward
A 7.50-nC charge is located 1.80m from a 4.20-nC charge, find the magnitude of the electrostatic force that one particle exerts on the other
A near-sighted person's eyeglasses has a focal length of ? 22.0 cm, and the lens is 1.8 cm from the eye. what should be the focal length of the corresponding contact lens
A fan is spinning at 900 rpm. When its motor is turned off it makes 75 rev before coming to a stop. If the work down by dissipative forces is 44.4J, Find the moment of Inertia of the fan and the torque due to dissipative forces.
A bullet of mass m = 25 g is fired into a wooden block of mass M = 4.5 kg. The block is attached to a string of length 1.5 m. The bullet is embedded in the block, causing block to then swing.
An electron initially at rest moves from one plate of a capacitor to another, through a potential di?erence of 2476 V, Find the speed with which the electron strikes the positive plate
Calculate the vertical component of its velocity by the time it hits the ground
A 0.031 kg aluminum bullet traveling at 471 m/s strikes an armor plate and comes to a stop, what is the bullet's temperature change in degrees Celsius
A 170g mass attached to a horizontal spring oscillates at a frequency of 3.70Hz, Determine Amplitude and Phase Constant
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