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Q1. A rifle that shoots bullets at 420 m/s is to be aimed at a target 49.0 m away. If the center of the target is level with the rifle, how high above the target should the rifle barrel be pointed so that the bullet hits dead center?
Q2. Coherent light with wavelength 600 nm passes through two very narrow slits and the interference pattern is observed on a screen 5.00 m from the slits. The first-order bright fringe is at 4.74 mm from the center of the central bright fringe. For what wavelength of light would the first-order dark fringe be observed at this same point on the screen?
A 7.01- g bullet is moving at 563.00 m/s as it leaves the 0.58- m-long barrel of a rifle. What is the average force on the bullet as it moves down the barrel
An LC circuit is built with a 21.0mH inductor and an 8.00?F capacitor. The current has its maximum value of 0.500A at t =0s. How long is it until the capacitor is fully charged
Plutonium has a half life of 2.4 × 104 years. How long does it take for 99% of the plutonium to decay, What is the binding energy of the 4He nucleus
This hill slopes upward at a constant angle of 40 degree above the horizontal. The coefficient of static and kinetic friction between the hill and the rock are .75 and 0.20, respectively.
The refractive indices of materials A and B have a ratio of nA/nB = 1.66. What is the speed of light in material B
An asteroid orbiting the Sun has a mass of 4.00Ã?1016 kg. At a particular instant, How far is the asteroid from the Sun
5 kg of water at 60 degrees are put in contact with 1 kg of ice at 0 degrees and are thermally isolated from everything else. What is the change in entropy of the universe while the ice melts
A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. at what rate does the box accelerate down the slope
Starting from its nest, an eagle flies at constant speed for 4.0min due east, then 4.2min due north. How long is the eagle in the air
a 71 kg baseball lplayer jumps straight up to catch a line drive. If the 140 g ball is moving horizontally at 28 m/s, what is his speed immediately after stopping the ball
A narrow beam of light with wavelengths from 450 nm to 700 nm is incident perpendicular to one face of a 32.00 degrees prism made of crown glass
What is the frequency of the string.
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