a fire-man's pump steadily draws water from a river through a pipe with an inlet of diameter 12cm. a fireman positioned 3m above the pump inlet, holds a nozzle with an exit diameter of 3.5cm that is connected to the pump outlet by a flexible hose. if the heat transfer to the surroundings from the pump is 10% of its output, calculate the power required by the pump to deliver a flow rate of 0.015m3/s. assume that the density of water is 998kg/m3 and the gravitational acceleration is 10m/s 2.5kw]

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your answer is c! hope this : )

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

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