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Question1
A 23-g bullet travelling 285m/s penetrates a 4.5kg block of wood and emerges cleanly at 230m/s. If block is stationary on a frictionless surface while hit, how fast does it move after the bullet emerges?
Question2
A 17 g rifle bullet travelling 215 m/s buries itself in a 3.8 kg pendulum hanging on a 2.5 m long string that makes pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
Question3
Two speakers, one straight behind the other, are each generating a 457-Hz sound wave. What is the smallest separation distance between speakers that will produce destructive interference at a listener standing in front of them? Take speed of sound to be 344 m/s.
Bob can see the drai at the bottom center of a water filled pol (n=1.33) that is 3.6 m wide by light emerging 18 degrees above the horizontal
An ideal gas has a volume of 0.20 m3, a temperature of 30 oC, and a pressure of 1.0 atm. What is the new pressure
What is Rosie's power output. A long, straight wire carries a current of 44 A. The magnetic field produced by this current at a certain point is 8.0 x10-5 T. How far is the point from the wire.
calculate the average acceleration in m/s^2 (meter per second square), using a coordinate system with the X axis in the direction of the car's original motion and the Y axis toward the side of the road to which the car skids.
A tile is dropped at a height of 12 Meters. The tile has a mass of 2.5kg. Calculate the final speed of the tile
A certain compact disc player draws a current of 340 mA at 27.0 V. How much power is required to operate the player
A block is on a rough horizontal surface. A horizontal force of magnitude 3 N is applied to the block. What is the frictional force exerted on the block
A chair of mass 13.0kg is sitting on the horizontal floor; the floor is not frictionless, Use Newton's laws to calculate the normal force that the floor exerts on the chair
A child sits on the edge of a spinning merry-go-round that has a radius of 2.9 m. What is the child's acceleration
Consider a loop with 50 square turns that is 12 cm on a side and is in a uniform 0.6 T magnetic field. Find the current through a loop needed to create a maximum torque of 9.00 N · m
A particle moves with constant acceleration a . The expression vi+at represents the particle's velocity at what instant in time? Here are the choices.
Two point charges, Q = +5.17 microC and q = -2.83 microC, are separated by r = 5.85 m. What is the electric potential energy?
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