Hey any grade 11 physics students here plz help As a chemist CVV Chemicals has asked you to determine the mass of Na2SO4 that it needs to purchase to produce and deliver the required 20kg of sodium sulphide. Calculate the mass of Na2SO4 needed to produce exactly 20kg of sodium sulphide

truck y has a greater velocity than truck x.

e/c, where e is its total energy

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.