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An unstable particle with a mass equal to 3.34 ? 10-27 kg is initially at rest. The particle decays into two fragments that fly off with velocities of 0.982c and -0.852c, respectively. Find the masses of the fragments. (Hint: Conserve both mass-energy and momentum.)
Heat is extracted from a certain quantity of steam at 100 degrees celsius. Thus the steam changes into ice at 0 degrees celsius. If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice.
A rubber ball is dropped and bounces vertically from a horizontal concrete floor. what is the average force of the floor on the ball
Al the astronaut has a mass of 90kg and a weight of 900N when he is standing on the surface of the earth. What is his mass when he is in a space station orbiting earth with an orbital radius of two earth radii?
Air at 80 kPa, 27 degrees C and 220 m/s eneters a diffuser at a rate of 2.5 kg/s and leaves at 42 degrees C. the exit area of the diffuser is 400 cm2. the air is estimated to lose heat at a rate of 18 kJ/s during this process.
A woman lies on a weightless board across two scales. Her feet are directly over the right scale. How far above her feet is her center of mass
Then sphere (s) is repelled by sphere (g) a distance of 1 cm from equilibrium. What is the electrosatic repulsion between the spheres? Assume: m*g=6.5 x 10-4 N.
A g215 g sample of a substance is heated at 330 degree celcius and then plugged into 105 aluminum calorimeter cup containing 165 g of water and a 17 g glass thermometer at 125 degree C. the final temperature is 35 degree C. what is the specific heat ..
A 93 kg astronaut and a 1100 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.19 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into conta..
A 4.60kg package slides 1.59m down a long ramp that is inclined at 12.2 m below the horizontal. Calculate the work done on the package by friction
Billy has a bucket that has a mass of 150 g, in which he put 150 g of fresh water. He has tied 150-cm of string to the handle of the bucket.
A horse pulls a cart on a level road with a force of 140.0 Newton at angle of 25.0 degree with respect to the horizontal. Compute how much work does the horse do in 12.6 minute
Two sinusoidal waves with identical wavelengths and amplitudes travel in opposite directions along a string with a speed of 11 cm/s. what is the wavelength of the waves
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