An l 1-m-long vertical copper tube ofinner diameter di 18 mm and wall thickness 1 2 mm contains liquid water at t 0°c. on a winter day air at v = 2.5 m/s, t, : -20°c is in cross flow over the tube. determine the heat loss per unit mass from the water when the tube is full of water, in w/kg. evaluate the properties of copper at 300 k. w/kg the tolerance is +/-2%

radiation warms things up temp rises convection currents air circ windy weather

an electric circuit

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.