Out of solid and liquid in which the effect of gravity is more​

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

What equation is used to calculate the weight of an object on a plant ?