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A 0.20 kilogram ball is thrown straight up into the air with an initial speed of 20m/s. Calculate the momentum of the ball at the halfway to its maximum height?
A 1.8-kg block slides down a fixed, rough curved track. What is the change in mechanical energy of the block coused by the force of friction during this descent
A golf ball is driven from a level fairway. At a time of 5.32 s later, the ball is traveling downward with a velocity of 55.2 m/s at an angle of 26.0° below the horizontal. Neglecting air resistance, calculate the initial velocity (magnitude and dire..
If a simple pendulum with length 1.3 m makes 88oscillations in 180 s, what is the acceleration of gravity at its location
A block with a mass of m is resting on a 20 degree slope. The block has coefficients of friction 0.81 and 0.55 with the surface. What is the minimum mass that will stick and not slip
Verify that the following f-stops and shutter speeds all give the same exposure : f2 at 1/200 s ; f2.8 at 1/100 s ; f4 at 1/50 s ; and f5.6 at 1/25 s.
You just calibrated a constant volume gas thermometer. What is the temperature of the thermometer, when it reads a pressure of 480 kPa
1.0 kg block is at rest on a table. a 20.0 gr bullet is fired vertically up from under the table.the bullet goes
A machine shop has 100 equally noisy machines that together produce an intensity level of 90 dB. how many machines must be turned off
a steady wind of 25 knots over a very long fetch can create waves of 3-meter height a period of approximately 10
A small 15{rm g} bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. The other end of the bar pivots about a nail driven into the table and can rotate freely, without friction.
The construction of a flat rectangular roof (4.7m x5.3m) allows it to withstand a maximum net outward force of20007N. At what wind speed will this roof blow outward
the drive chain in a bicycle is applying a torque of .850 Nm to the wheel of the bicycle. What is the angular acceleration of the wheel
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