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Q1. A 20 kg block is at rest on a horizontal floor. If you push horizontally on the 20 kg block with a force of 50 N, it just starts to move.
A) What is the normal force acting on block?
B) What is the coefficient of static friction?
C) A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move?
Q2. The spontaneous fission rate of 239U is 1 fission per gram per 1.00 sec. Show that this is equivalent to half-life for fission of 5.6 x 1 0^15 years.
A satellite has a mass of 95 kg and is located at 1.99 106 m above the surface of Earth. What is the magnitude of the gravitational force on the satellite
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in a single-slit diffraction experiment, a beam of monochromatic light of wavelength 630 nm is incident on a slit of width 0.4 mm. what is the width of the central bright fringe
A ball is suspended by a string and moves in a horizontal circle. One such pendulum has a 100g ball at the end of a 1.5 meter long string and has an orbit of radius 30.0cm. Determine the net force acting on the ball and the acceleration
A rock is dropped off the side of a bridge and hits the water below 5.7 s later. What was the rock's velocity when it hit the water
question1an unstable nucleus of mass 3.4 10-26 kg initially at rest at an origin of a coordinate system disintegrates
A parallel capacitor has plates 2.0cm x 3.0cm. The plates are separated by a 1.0mm thick piece of paper. Find the capacitance of this device
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Light of wavelength 418 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. What is the wavelength of the light in the water
q1. imagine that temperature of atmosphere is constant and is approximately 5degc.define hh2o altitude where the
Once can set up a two-dimensional scattering theory that could be applied to puck projectiles sliding on an ice rink and colliding with various target obstacles.
One summer day, you decide to make a popsicle. You place a popsicle stick into a 9-oz glass of orange juice, How long does it take your popsicle to freeze
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