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A 90--nozzle with exit diameter d is attached to a hose of diameter 3d with pressure p. The nozzle changes the direction of the water flow from the hose through an angle of 90-. Calculate the magnitude of the force of the water on the nozzle if
(a) p ¼ 200 kPa, d ¼ 1 cm
(b) p ¼ 400 kPa, d ¼ 6 mm
(c) p ¼ 300 kPa, d ¼ 1.2 cm (d ) p ¼ 500 kPa, d ¼ 2.2 cm
Over the course of a multi-stage 4280-km bicycle race, the front wheel of an athlete's bicycle makes 2.28 106 revolutions. How many revolutions would the wheel have made
Particle A of charge 5.00x10-4 C is at the origin, particle B of charge -5.00x10-4 C is at (3.00 m, 0) and particle C of charge 3.00x10-4 C is at (0, 2.00 m).
Matt is sailboarding northeast across the river with a velocity of 10 m/s relative to the water. what is the resultant or true velocity of the sailboard
At t=0, a proton is moving with the speed of 5.5×10^5 m/s at an angle of 30 degrees from the x-axis, as shown in the figure. A magnetic field of magnitude 1.5 T is pointing in the positive y-direction. What would be the y-coordinate of the proton ten..
High-speed stroboscopic photographs show that the head of a 250. g golf club travels at 60.0 m/s just before it strikes a 47.0 g golf ball at rest on a tee. What is the velocity of the golf ball just after the impact by the club
Small steel ball bearing with a mass of 17 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.39m. Calculate the horizontal distance ball would travel if the same spring we..
a uniform rod of mass 4 kg is free to pivot about the wall at a point P. It is supported by a string which hangs at an angle of Φ = 45° to the horizontal as shown. If the rod is at rest the tension in the string is
An 8 kg box with initial speed 6 m/s slides across the floor and comes to a stop after 1.7 s. What is the coefficient of kinetic friction
A small rocket is powered upward on a lift off by an engine thrust of 12000 Newton. If the resulting upward acceleration is 6.4m/s2, determine what is the mass of the rocket
A jogger generates heat energy at a rate of 808.2 W. If all this energy is removed by sweating, how much water must evaporate from the jogger's skin each hour
Find the total binding energy for Americium, 243Am (atomic mass = 243.061375 u)
A mechanic pushes a 3.20 X 10^3 kg car from rest to a speed of v, doing 5,100 J work in the process. find the horizontal force exerted on the car
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