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How much work is done by pressure in forcing 6.6 m3 of water through a 13.0 mm internal diameter pipe if the difference in pressure at the two ends of the pipe is 1.0 atm?
Johnny Jumper's favorite trick is to step out of his high-rise window and fall 37.0 m into a pool. Find Johnny's de Broglie wavelength at this moment
Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.023 m. Find the water speed in each hose
q1. a beam of light strikes a sheet of glass at an angle of 57.0circ with the normal in air. you observe that red light
An engineer has designed a machine to produce electricity by using the difference in the temperature of ocean water at different depths. what is the maximum efficiency of this machine
Steam enters a turbine with a velocity 120 m/s at 600°C and 6000 kPa. The steam leaves the turbine as saturated vapor at 200 kPa with a velocity of 180 m/s. Heat is transferred from the turbine to the surroundings in the amount of 30 kJ for every ..
A starship is exploring a new star system. The ship is a light-minutes away from the star, which has a radius of 106km. The intensity at the location of the starship is 240 W/m^2.
Two upward wave pulses are generated at opposite ends of a string and travel toward each other. find the maximum displacement of any particle of the string
The magnetic force exerted on a 1.3-m segment of straight wire is 1.5N . The wire carries a current of 3.2A in a region with a constant magnetic field of 0.52T. What is the angle between the wire and the magnetic field?
question1a blocks slides all along a track that descends through distance h. the track is frictionless except for the
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
The upward normal force exerted by the floor is 670N on an elevator passenger who weighs 710N . A) What is the reaction force to the upward normal force exerted by the floor? B) What is the reaction force to weight of the passenger? C) What is the ma..
If a chain of 35 identical short springs linked end-to-end has a stiffness of 400 N/m, what is the stiffness of one short spring
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