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Water comes down the spillway of a dam from an initial vertical height of 170 m. What is the highest possible speed of the water at the end of the spillway?
A block of wood has a mass of 3.70 kg and a density of 632 kg/m3. What mass of lead is needed if the lead is on top of the wood
An object is lifted vertically 2m and held there. If the object weighs 30N, how much work was done in lifting it. Describe it briefly.
Fill a glass with water. Look down through the water, and then through the glass to your hand on the outside. Can you see it? Tip the glass towards you and watch your hand disappear. Why? Do you know what physical phenomena this observation is rel..
The plane is inclined at an angle of 24.9 degrees with the horizontal. Using the accerlation due gravity from your reference table. Illustrate what is the magnitude of object's acceleration?
A newly discovered planet has a mass of 7.88 x1026 kg, and has a satellite whose mass is 6.44 x 1011 kg. what is the gravitational attraction between them
One of the Niagara turbines uses 172,000 cubic feet of water perminute under a head of 215 ft. What is the horsepower developed
A catcher stops a ball traveling at 28.0 m/s in a distance of 55.30 cm and feels a force of 313 N against his glove. What is the mass of the ball.
A 4.9 kg particle and a 2.7 kg particle have a gravitational attraction with a magnitude of 2.6 ? 10-12 N. What is the gravitational potential energy of the two-particle system
A 0.250-kg piece of aluminum that has a temperature of -173 °C is added to 1.0 kg of water that has a temperature of 1.4 °C. determine the mass of water that has been frozen into ice
A 50 kg diver steps off a 10 m high platform and strikes the water below in 1.43 seconds. determine the average frictional force that stopped his motion while in the water
discuss the steps required in calculating the collector-emitter voltage in a vdb circuit. why does this circuit have a
A 10.0 g object moving to the right at 18.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 27.0 cm/s
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