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1.Using the Law of Conservation of Energy, find the maximum height of a 4.0 x 102 g baseball thrown straight up at an initial speed of 18 m/s.
2. An air-hockey paddle pushes a 48.0 g stationary puck a distance of 50.0 cm on the frictionless surface. When the force is removed the puck is travelling at a speed of 15.8 m/s. What force did the paddle apply to the puck?
Sam, whose mass is 75 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 200 N and a coefficient of kinetic friction on snow of 0.1. Unfortunately, the skis run out of fuel after only 10 s. What is Sam's top speed? ..
A light ray initially in water enters a transparent substance at an angle of incidence of 43.0°, Calculate the speed of light in the transparent substance
the rear window of a van is coated with a layer of ice at 0degc. the density of ice is 917 kgm3 and the latent heat of
The largest barometer ever builds were an oil-filled barometer constructed in Leicester, England in 1991. Calculate the density of the oil in the barometer
A car with an initial velocity of 3.5 m/s coasts with the engine off and the transmission in neutral. If the combined effect of air resistance and rolling friction causes a deceleration of0.50 m/s2, after how long of a time will the car come to a sto..
A car fuel tank is filled to the brim with 45 L (12 gal) of gasoline at 10 °C. Find how much gasoline overflows from the tank as the result of the expansion
When light illuminates a grating with 4900 lines per centimeter, its second order maximum is at 47.8o. Evaluate what is the wavelength of the light
A Pelton impulse turbine has blades designed so that the direction of the incoming water jet with speed u is reversed. If the speed of the blades is u_c then, relative to the blade, the magnitude of the total change in the velocity of the jet is 2..
A 3.50 kg block on a smooth tabletop is attached by a string to ahanging block of mass 2.8 k. The blocks are released from rest and allowed to move freely. (a) Find the acceleration of the blocks, and (b) find the tension in the string.
a collie drags its bed box across a floor by applying a horizontal force of 8.0 n. the kinetic frictional force acting
An astronaut with a mass of 85 kg is outside a space capsule when the tether line breaks. To return to the capsule, the astronaut throws a 2.0 kg wrench away from the capsule at a speed of 14 m/s. At what speed does the astronaut move toward the c..
What is the acceleration of a bicycle that starts from rest and reaches 6.0m/s after 5.0 seconds? 750-kg solid wood barge has a volume of 1.6 cubic meters. What is its density? A stone is dropped from a cliff and is seen to hit the ground 4.5s late..
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