A platinan bar measure 5.0cm long, 40cm wide and 1.5 cm thick. if has a mass of 700.0grams.

Calculate the volume of platinum bar.

I need help :( Plz help me

that is what I got for my answer

Explanation:

I Calculate it and I got 1600

answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.