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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?
A copper wire is 2 meters long. when a certain load is hung from the wire, making sure the wire is straight, how much does each inter-atomic bond stretch
The electric field between the plates of the velocity selector is 4900 V/m, and the magnetic fields in both the velocity selector, compute the radius r of the path for a singly charged ion with mass m = 4.29 10-26 kg
if i car was travling at 22.2 m/s and went to 30.5 m/s in 5.2m/s what is the cars displacement during this maneuver
An airplane flies in a loop (a circular path in a vertical plane) of radius 150m . The pilot's head always points toward the center of the loop, What is the apparent weight of the pilot at this point
A proton, mass 1.67 x 10^-27 kg, is projected horizontally midway between two parallel plates that are separated by 0.30 cm, find minimum speed of the proton that just misses the lower plate as it emerges from the field
In very cold weather, a significant mechanism for heat loss by the human body is energy expended in warming the air taken into the lungs with each breath. How much heat is lost per hour if the respiration rate is 19.0 breaths per minute
An astronaut of mass 73 kg pushes off a satellite of mass 420 kg, exerting a force of 120 N for the 0.82 s they are in contact. What is the speed of the astronaut after they have separated
A town is installing a new 10” main to carry drinking water. The only section remaining to be installed is a segment through the middle of town. Calculate the length of pipe required for the pipe system.
A point charge of 8.40 mC is surrounded by an equipotential surface with a radius of 0.262 m. What is the electric potential on the surface
A bullet is fired through a board 10.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
A 3.4 k and a 2.4 k resistor are connected in parallel; this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W (maximum without overheating), what is the least voltage that can be applied across the whole..
Two polaroid sheets are arranged so that their transmission axes are at 90 degrees to each other. What is the intensity of light leaving the final sheet
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