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Q. A gardener opens a hose and water is ejected horizontally at a speed of 6m/s. The diameter of the hose is 2cm and the density of water is 1000kg/m^3
(a)1 Find the volume of water ejected from the hose every second.(b)2 Hence find the mass of water ejected every second.(c)Find the backward force exerted on the gardener by the hose.
How many 112 W lightbulbs can you use in a 100 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 100 V.)
As an energy-efficiency consultant, you're asked to assess the pumped-storage facility. Its reservoir sits 136 above its generating station and holds 9.0×10^9 of water. The power plant generates 315 of electric power while draining the reservoir over..
Obtain an expression for the velocity
Find the boundary layer thickness and drag on a given plate if Water at 15°C flows over a plate 2m long and 25cm wide at a velocity of 5 m/s along its length.
one end of a uniform beam of 222N is hinged to a wall, the other end is supported by a wire that makes angles of 30 with both wall and beam, find out the tension in the wire and horizontal and vertical componentes of the force od the hinge on the ..
What is coefficient of kinetic friction
A baseball pitcher can throw a ball with a speed of 70m/s. He is in the back of a pickup truck that is driving away from you. He throws the ball in the direction, and it floats toward you at a lazy 10 m/s.
Determine Maximum wavelength and Minimum wavelength. How various penguins of mass 16 kg each can stand on the ice block before they find their feet wet.
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
Find out the constant force that must be exerted on him to bring him to rest in a distance of 1.2 m in a time interval of 0.20 s.opposite the fullback's direction of motion.
A horizontal force a of magnitude 22 N is applied to a 3.25 kg psychology book, as book slides a distance d = 0.500 m up a frictionless ramp.
A wooden raft has a mass of 85 kg. while empty it floats in water (density 1000 kg/m3) with 61 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
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