Calculate the total amount of int ernal energy lost per year from earth, assuming a heat flux of 7.5 x 10-10 j m-2 s- (b) calculate the temperature of earth if the 'heat flux' had been constant over the age of the solar system but none of the heat had escaped the planet. a typical value for the specific heat of rock is cp = 1.2 × 103 j kg k-1

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.