Question

A paraliel-giale vactum espapsor has 6.523 of Part A. energy thorod in it. Tho separation between the piases ia 370 mm. soutce tetore the begaraton of the piates was changed? Fapeess your anwwer in joules. Part B soutce while the stabration of the plates was thanged? Express your antwee in joulen.

Answer 1

For Part A

The kinetic energy of the particles is determined by the formula:

E=1/2mv2
Where E is the kinetic energy, m is the mass and v is the velocity of the particles.

Part A is asking for the total kinetic energy of the plate before the change, and this is equal to half the mass of the plate times its velocity squared

In this case this equals 533.1 J

For Part B

The potential energy of the plate after the change is equal to the weight of the plate times it's height above the ground