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A spring gun (k = 28.8 N/m) is used to shoot a 58.4-g ball horizontally. Initially the spring is compressed by 18.3 cm. The ball loses contact with the spring and leaves the gun when the spring is still compressed by 12.1 cm. What is the speed of the ball when it hits the ground, 1.23 m below the spring gun?
A television screen is illuminated using a beam of electrons traveling at 7.50×106 m/s in a 1.75×10?2 T magnetic field. find the direction of the acceleration of the electron
A Superball is dropped from a height of 2.7 and rebounds off the floor to a height of 2.2. find the magnitude of the ball's average acceleration due to the floor
A hollow cylinder (hoop) is rolling on a horizontal surface at speed 5.5m/s when it reaches a 11?incline. How far up the incline will it go
We've seen that fish can control their buoyancy through the use of a swim bladder, a gas-filled organ inside the body. What will the volume of the swim bladder be if the fish ascends to a 49 depth without changing the quantity of gas
You are examining a flea with a converging lens that has a focal length of 4.40 cm. If the image of the flea is 8.00 times the size of the flea, how far is the flea from the lens
A single slit 1.0mm wide is illuminated by 500nm light. What is the width of the central maximum (in cm) in the diffraction pattern on a screen 4.0m away
Consider the four masses. Find the total gravitational potential energy of this system. How does your answer to part A change if all the masses in the system are doubled.
In a cathode-ray tube, a beam of electrons is projected horizontally with a speed of 1.0x10^9 cm/s into a region between a pair of horizontal plates 2.00 cm long.
A 10kg object is brought to the moon, where the acceleration due to gravity is only one-sixth of that on earth. What is the mass of the object on the moon
You have been called to testify as an expert witness in a trial involving an automobile accident, determine that the coefficient of kinetic friction between the wheels and the pavement at the time of the accident was 0.59
At a given instant an 56 mH inductor stored an energy of 89 µJ. What is the current in the inductor at this instant
A vertical tube 1.9cm in diameter and open at the top contains 4.0g of oil (density 0.82 g/cm^3) floating on 4.0g of water. Find the gauge pressure at the oil-water interface
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