6.1f 1 kg of fuel is used in the above fusion reaction, the resulting helium has a mass of 0.993 kg. in
other words, 0.007 kg of mass is converted to energy. how much energy is produced by the fusion of
1 kg of hydrogen? (hint: use einstein's equation, e = mc2, where e is energy in joules, m is mass in
kilograms, and c is the speed of light, 3 x 108 m/s.) (6 points)

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

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.