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A ball with 3gr mass and momentum P strikes elastically a wall and bounces off. Calculate the change in the ball's momentum.
The proton is replaced with He2+ ion now at a distance of 3 cm from the bead. What is the magnitude of the force experienced by the helium ion
q1. a 80 kg person sits on a 4 kg chair. each leg of the chair makes contact with the floor in a circle that is 1.3 cm
Your friend, who is exactly the same age as you, travels at a speed of 0.9990c to a star 25 light-years away. How long does she measure for the time she is away
Consider the reaction 4He + 40Ca -> 3H + 21Sc Find the minimum laboratory kinetic energy for the 4He projectile if 40Ca is stationary
Two waves with identical frequency but different amplitudes A1 = 6.0 cm and A2 = 3.0 cm, What is its amplitude if they interfere destructively
A 17cm radius air duct is used to replenish the air of a room 7.1 m x 5.2 m x 4.5 m every 16 min. How fast does air flow in the duct
A 25-g string is streched with a tension of 43.0 N between two fixed points 12.0 m apart. What is the frequency of the second harmonic
The radius of a park merry-go-round is 2.4 m. To start it rotating, you wrap a rope around it and pull with a force of 260 N for 11 s. What is the moment of inertia of the merry-go-round
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
A large incandescent light bulb used in a spotlight in the 1939 movie "The Wizard of Oz" had an operating temperature of 2500 degrees Kelvin. determine the thermal power from the filament in Joules/second
A spy satellite circles the Earth at an altitude of 160 km and carries out surveillance with a special high-resolution telescopic camera having a lens diameter of 35 cm
Starting with the left-most column, populate the boxes from left to right without skipping empty boxes. Ties should be grouped in the same box
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