Ans of physics numerical : a body of mass100 cm cube weighs 5 kgf in air. it is completely immersed in a liq of density 1.8 *1000kgmcube .find upthrust due to liq and weight of body in liq

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.

there are no components of a physical goal mentioned on the list of choices that you've provided.

3. dark matter

empty space could also be a simple vacuum