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A garden hose with an internal diameter of 2.0 cm is connected to a (stationary) lawn sprinkler that consists merely of an enclosure with 30 holes, each 0.18 cm in diameter. If the water in the hose has a speed of 0.83 m/s, at what speed does it leave the sprinkler holes?'
An amount of ideal gas is con?ned to a sealed box at one-half atmospheric pressure, i.e., 50.65 kPa. What is the new pressure of the gas in the smaller box
Two identical cylinders (except for their volumes) at the same temperature each contain the same kind of gas and the same numberof moles of gas. If the volume of cylinder A is 6 times greater than the volume of cylinder B,what can you say about the r..
Sixty identical drippers, each with a hole of diameter 1.00 mm are used to water a yard. how fast the water is coming out the drippers
A hot-air balloon is rising straight up with a speed of 2.78 m/s. A ballast bag is released from rest relative to the balloon when it is 2.15 m above the ground. How much time elapses before the ballast bag hits the ground?
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
A 1000kg car, going around a circular track at 144km/h, experiences a centripetal force of 10,053N. Calculate the radius of the track
Earth is about 150 trillion meters from the Sun, while Mars is about 230 trillion meters from the Sun. What is the gravitational force between Mars and Earth
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 63.0cm mark on the track. What is the maximum speed of the glider
Assume an astronaut in training sits in a seat at one end, facing the axis of rotation 29.0 ft away. Determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 18.5g.
A 9 g ice cube at -10°C is placed in a lake whose temperature is 17°C. Calculate the change in entropy of the cube-lake system
The pressure at the surface of the water will be 140kPa , and the depth of the water will be 13.8m . The pressure of the air in the building outside the tank will be 87.0kPa
A 258-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.980, and the log has ..
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