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A 1.4 kg block slides on a plane inclined at 37 degrees to the horizontal axis. The coefficient of friction between the plane and the block is .76. A string parallel to the plane connects the block to a vertically suspended ball of 2.2 kg by way of a frictionless and massless pulley.
a) Draw free body diagrams for each mass and write the correct Newton's 2nd Law equation for each- the block and the ball.
b) Find the acceleration of the two masses- the block and ball.
Point charges of 6.2*10^-8 C and -6.4*10^-8 C are placed 72 cm apart. A third point charge of 6.3*10^-8 C is placed half way between the first two point charges
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
Two children tug on a toy of mass 2.0 kg. Costa pulls with a force of 10.0N [W 30degrees S]. The toy slides with an acceleration of 2.5 m/s^2 in the direction of the net force.
A string is clamped at one end and the other end rests on a light, frictionless pulley with a mass hanging below it to provide a tension. What is the mass on the end of the string
A 1.0 kg ball drops vertically onto a floor, hitting with a speed of 28 m/s. It rebounds with an initial speed of 12 m/s. What impulse acts on the ball during the contact
A certain copper wire has a resistance of 11.0?. What is the resistance of each piece
A 1500 kg car is headed directly for a brick wall when the driver realizes the danger and slams on the brakes. The car's initial speed is 32 m/s, Determine how far the car travels while skidding to a stop
An undamped 1.16-kg horizontal spring oscillator has a spring constant of 38.9 N/m. While oscillating, it is found to have a speed of 3.18 m/s as it passes through its equilibrium position. What is its amplitude of oscillation
A man is running at speed c (much less than the speed of light) to catch a bus already at a stop. At t=0, while he is a distance b from the door to the bus, the bus starts moving with the positive acceleration a.
A world champion hammer thrower, rotates at a rate of 3.5 revolutions/sec just prior to releasing the hammer. What was the linear velocity of the hammer at release
You desire to observe details of the Statue of Freedom, the sculpture by Thomas Crawford that is the crowning feature of the dome of the United States Capitol in Washington D.C. what focal length should the eyepiece have
A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. what is the size of the spot this beam would make on the moon
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