#3, they both come after infared and are not harmful to living cells.
Work = (force) x (distance)
80 J = (force) x (4 m)
Force = (80 J) / (4 m) = 20 N
That's IF the force was in the same direction as the 4m of motion.
If the force was kind of slanted, then it had to be stronger, and
it had a component of 20N in the direction of the motion.
Answer:
I think it's option D
Explanation:
I think it's option D but not so sure
Answer:
creo que es la a ..........
