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A 25g bullet pierces a sand bag 27cm thick. If the initial bullet velocity was 64 m/s and it emerged from the sandbag with 35m/s, what is the magnitude of the friction force(assuming it to be constant) the bullet experienced while it traveled through the bag?
A viewing window in the Atlanta aquarium is 67 inches wide and 43 inches high. what is the outward force on the window
A 20-cm-radius ball is uniformly charge to 80nC. What is the ball's volume charge density and How much charge is enclosed by spheres of radii 5, 10 and 20 cm
What are the original charges on each sphere
A mirror has a focal length of 10 cm. An object is located 15 cm to the left of the mirror. What is the total magnification for the two images
Three forces act on an object. A 2 N force acts due east and a 3 N force acts due north. what is the magnitude of the third force
find frequencies of vibration of the piano wire. Car 1 has 3 times the mass of car 2, but only 0.5 as much kinetic energy. What is the ratio between the speeds of the two cars (v1/v2)? You must type your answer as a numerical value.
The velocity of a plane relative to still air is 135 mr/hr. The pilot wants to fly straught north over the ground. What is the direction of the wind relative to the ground
A helicopter is ascending vertically with the speed of 8 m/s. At a height of 65m above the Earth, a package is dropped from a window.
A 1.78 m long wire carrying a current of 1.65 A forms a 5-turn loop in the shape of an equilateral triangle. determine the maximum torque that acts on it
At the same time, the stationary trumpeter played the same note. Ballot heard 3.0 beats per second. How fast was the train moving toward him.
a bowling ball rolls across a horizontal roof with a speed of 8.57m/s If the roof is 12.5m/s above ground how far from the base of building will the ball land
An ideal gas is expanded isothermally from 20L to 30L. During thismethod , 6J of energy is expended by the external mechanism that expanded the gas. Which of the statements is correct.
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