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A bullet of mass 240 g is fired horizontally from a gun with a velocity of 800 m/s into a wooden block of mass 5.0 kg sitting on a horizontal table. If the bullet embeds itself into the block, find the velocity of the block after being hit by the bullet.
On a very muddy football field, a 100kg linebacker tackles an 85kg halfback. What is the direction of this velocity
A 2.60×104- rocket blasts off vertically from the earth's surface with a constant acceleration. How far is the rocket above the earth's surface when it breaks the sound barrier
A 12 kg piece of zinc at 65C is placed in a container of water. The water had a mass of 20 kg and a temperature of 12C before the zinc was added. What is the final temperature of water and zinc
As you finish listening to your favorite compact disc (CD), the CD in the player slows down to a stop. Assume that the CD spins down with a constant angular acceleration. Part A If the CD rotates clockwise (let's take clockwise rotation as positiv..
Two converging lenses, each of focal length 14.2 cm, are placed 59.9 cm apart, and an object is placed 26.6 cm in front of the first. determine the magnification of the system
a 1.000 meter long rod (measured when stationary) is moving at 0.8 c. How long would the rod appear to a stationary observer
A swimmer swims in still water at a speed of 5.90 m/s. He intends to swim directly across a river that has a downstream current of 3.17 m/s. What is the velocity relative to the bank
The power brick for the author's laptop computer has a power rating of 60 W. It uses a step-down transformer to convert the AC voltage from a wall socket (Vrms = 120 V) to a value near 12 V.
The acoustical system is driven by speaker emitting a 432Hz note. If destructive interference occurs at a particular instant, by what least amount amount must the difference of two path lengths in the U-shaped tube be increased so as to hear const..
A circular disc of mass 10 kg is suspended by a wire attached to its centre. Determine the torsional spring constant of the wire
An object with mass m1 = 3.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley, Find the acceleration of each object and the tension in the cable
a 70.9 kg boy and a 43.2 kg girl both wearing skates face each other at rest on a skating rink the boy pushes the girl
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