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A fire hose of radius 0.0300m is connected to the pump outlet on the fire truck. At the other end of the hose, water emerges through a hose nozzle of radius 0.0200 m with the average speed of 4.00m/a when the nozzle is 15m above the fire truck. At what average speed does water enter the hose? for what outlet gauge pressure is the fire truck pump set?
The maximum speed of a 2.6-kg mass attached to a spring is 0.74 m/s, and the maximum force exerted on the mass is 11 N. What is the force constant of the spring
A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 4.0 m/s, How long does it take him to catch his opponent
To determine the location of her center of mass, a physics student lies on the lightweight plank supported by two scales 2.50 apart, as indicated . If left scale reads 300 , and right scale reads 122 .
Calculate the number of cells in a hummingbird assuming the mass of an average cell is ten times the mass of a bacterium
A person walks first at a constant speed of 5.10 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.95 m/s. (a) What is her average speed over the entire trip? (b) What is her average veloci..
The period of oscillation of an object in a frictionless tunnel running through the Earth is 84.3 min. What is the time of oscillation of an object in a similar tunnel on the Moon.
Air in a closed piston-cylinder device arranged to maintain a pressure of 400 kPa is heated from 27 ° C to 227 ° C. What is the final air volume
A student holds a tuning fork oscillating at 260 Hz. He walks towards a wall at a constant speed of 1.16 m/s. How fast must he walk away from the wall to observe a beat frequency of 4.50 Hz
Suppose you walk into a sauna that has an ambient temperature of 50.0 C. Calculate the rate of heat transfer to you by radiation given your skin temperature is 37.0 C
A basketball player makes a jump shot. The 0.600 kg ball is released at a height of 2.00 m above the floor with a speed of 7.20 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.20 m/s Find the work done on the ball by air ..
A baseball is seen to pass upward by a window 28m above the street with a vertical speed of 13 m/s. find the max height assuming the ball was thrown from the street
The magnitude of the charge on each plate of a parallel plate capacitor is 4 %u03BCC, What is the capacitance of this capacitor
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