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Water is forced out of a fire extinguisher by air pressure, as shown in Figure P9.64 where h = 0.495 m. How much gauge air pressure in the tank (above atmospheric) is required for the water jet to have a speed of 33.0 m/s when the water level in the tank is 0.495 m below the nozzle?
A 2 kg block and a 3 kg block are pushed across a 2 m long frictionless table, Compare the kinetic energies of the two blocks when they reach the end of the table
Two ropes are attached to a heavy box to pull it along the floor. One rope applies a force of 438 newtons (N) in a direction due west; the other applies a force of 402N in a direction due south.
The coefficient of kinetic friction for wood sliding on wood is 0.20. Illustrate what is the speed of the bullet?
A string is 41.0 cm long and has a mass of 3.00 g. A wave travels at 4.20 m/s along this string. what is the speed of a wave along the second string
A drinking fountain shoots water about 14 cm up in the air from a nozzle of diameter 0.60 cm. What gauge pressure does the pump have to provide
Consider an infinite arrangement of capacitors shown in the figure. C1= nF and C2 = nF. What is the equivalent capacitance Ceq
Two astronauts are, 3.18 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship?
Two equally charged insulating balls each weigh 0.50 g and hang from a common point by identical threads 30 cm long, What is the magnitude of the charge on each ball
A 1000-kg car is moving at 30.0 m/s around a horizontal curve whose radius is 100 m. What is the magnitude of the frictional force
A fluid with resistivity 9.40 ? seeps into the space be¬tween the plates of a 110-pF parallel-plate air capacitor. what is the resistance between the plates
Suppose a formula for gain in heat energy of an object is H = m(A - B), where m = mass and (A - B) is its rise in temperature between A degrees and B degrees (as in #4). Write an expression for the absolute uncertainty, delta-H, in terms of m, del..
A trunk with a weight of 230 N rests on the floor. The coefficient of static friction between the trunk and the floor is 0.32, what would be the acceleration of the trunk
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