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A car (m = 700.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a height, h = 42.0 m.
Find the average power the engine must deliver to reach a speed of 20.3 m/s at the top of the hill in 24.5 s(NEGLECT frictional losses: air and rolling, ...)
Students in a fraternity house want to be able to spray water 25 m across their neighbor's yard onto a patio. What size nozzle do they need
A block of mass 2.50 kg is pushed 2.20 m along a frictionless horizontal table by a constant 20.0 N force directed 25.0° below the horizontal. Determine the work done by the net force on the block
The angular momentum of a flywheel having a rotational inertia of 0.242 kg·m2 about its central axis decreases from 9.30 to 0.230 kg·m2/s in 4.40 s. What is the magnitude of the average torque acting on the flywheel about its central axis during th..
The measured current in a circuit in your uncle's house is 12 A current. In this circuit, the only appliance that is on is a space heater that is being used to heat the bathroom. What is the voltage at the wall outlet in the bathroom
Assume a billiard ball is a solid sphere. Its radius is 3 cm and mass is 500 grams. The coefficient of static friction between the ball and the surface is .70. a) Where should you hit the ball so that it experiences pure rolling motion without the..
An archer lines up an arrow on the horizontal exactly dead center on a target. She releases the arrow, and it strikes the target a distance h=7.6cm below the center. how long was the arrow in the air before striking the target
Although both stars probably formed from the same clump of gas, more massive one must have had its birth slowed so that it became a key -sequence star millions of years later than its less massive companion.
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. What is the change in entropy of the boiling water
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 14.0cm, Find the electric field just inside the paint layer
Calculate the heat capacity of a gas sample from the following information : The sample comes to equilibrium in a flask at 298.15 K and 121.3 kPa. A stopcock is opened briefly, allowing pressure to drop to 101.3 kPa.
Gasoline is made up of hydrocarbons. Suppose 80% of mass of gasoline is carbon and all of this becomes CO2 in combustion. If the density of gasoline is 6.7 lb/gal, how much CO2 is emitted per gallon of gasoline burned? The atomic mass of carbon is 12..
In a Young's double-slit experiment, two rays of monochromatic light emerge from the slits and meet at a point on a distant screen, What is the wavelength (in nm) of the monochromatic light
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