Which characteristic are shared by electromagnetic and mechanical waves? check all that apply. a. both have a crest and a trough b. both move due to particles bumping into each other c. both can move through matter d. both can occur as a result of a disturbance e. both are formed by charged particles

The answers would be the following:

A. both have a crest and a trough

C. Both can move through matter

D. Both can occur as a result of a disturbance.

For choices A and D, these are characteristics of ALL types of waves. The crest is the highest point of a wave and a trough is the lowest point of a wave. The definition of a wave is a disturbance that transfers energy from one point to another.

Now for B, both can move through matter. The main difference between these two is that mechanical waves move through matter generally, or they cannot occur without a medium. Electromagnetic waves on the other hand can move through matter but it can also move through empty space.

The characteristic shared by electromagnetic and mechanical waves is A, C and D.

Explanation:

Electromagnetic wave is the transverse wave. It is produced by the moving charged particle. In the electromagnetic wave, the electric field and the magnetic field are perpendicular to each other. It consists of a crest and a trough. It does not require a medium to travel.

In mechanical wave, there is an oscillation of matter. It requires a medium to travel. The three types of mechanical waves are longitudinal wave, transverse wave and surface wave.

Therefore, the characteristic shared by electromagnetic and mechanical waves is

A both have a crest and a trough.

C both can move through matter.

D both can occur as a result of a disturbance.

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.