1.What are the benefits of electromagnetic based from the article? 2.What are the hazardous effects of the electromagnetic wave based from the article?

3.Do we need to stop the use of radiation?Why or Why not?​

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

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.