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An automatic rifle fires 50 gram bullets at aspeed of 900 m/s at a rate of 50 bullets per second. What is the average recoil force against the gun's mount?
In a crash test, a 1100 kg car slams into a concrete wall at 17.1 m/s and comes to rest in 0.275 s. a)Find out the magnitude of the impulse delivered to the car.b) Find the average stopping force.
A typical incandescent lightbulb has a filament temperature of approximately 3191 K. At what wavelength is the intensity of the emitted light highest
A cockroach of mass m lies on the rim of a uniform disk of mass 6 m that can rotate freely about its center like a merry-go-round. find the angular velocity of the cockroach-disk system
What is the linear speed of a point on the equator, and on the Arctic Circle (latitude 66.5 degrees) and (c) at latitude of 45 N, due to the earth's rotation
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction is -6.0 x 103 J, what is the speed of the skier
A student sits on a rotating stool holding two weights, each of mass 3.00 kg. When his arms are extended horizontally, Find the new angular speed of the student
1. What are the differences between PSK and DPSK 2. What device can be used for generation of FSK signal
An iron bolt of mass 79.0 g hangs from a string 32.4 cm long. The top end of the string is fixed, Find the tension in the string and Find the magnetic force on the bolt
A simple pendulum is made from a 0.739-m-long string and a small ball attached to its free end. how much time elapses before it attains its greatest speed
A bucket filled with water has a mass of 54 kg and is hanging from a rope that is wound around .050 m radius stationary cylinder. if the cylinder does not rotate and bucket hangs straight down, what is the magnitude of the torque the bucket produc..
The ground state for a single valence electron of a rubidium atom (Z=37) is 5s and its energy is –4.18 eV. The valence electron is excited into the 5g state. We want to determine the energy of this 5g electron. Assume that the wave function for th..
A 4.60-g lead bullet traveling at 320 m/s is stopped by a large tree. what is the increase in temperature of the bullet
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