A liquid at 25°c is poured at the height of 40cm in a thin capillary tube of length 70cm and diameter of 1 cm. Assume that volume of the capillary tube does not change with the temperature. a) Find the initial volume of the liquid in cm^3.
b) The temperature of the liquid is reduced by 10°c causing the liquid to reduce in height to 73cm. Find the volume coefficient of the thermal expansion of this liquid.
c.) At the initial height of 40cn and temperature of 25°c, what change in temperature is needed for the liquid to rise to a height of 49cm?

explanation:

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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.