It takes 600 J of work to lifta crate straight up but 1,200 Jto pushthat crate up a ramp to the same height. What's the efficiency of the ramp?

50 percent

Explanation:

The efficiency of ramp can be found by using this formula

(Output work/input work)*100.

Amounts of work to lift up = 600j

Amount of work bro take up to same height = 1200j

Efficiency of ramp = (600j/1200j) * 100

= 0.5 x100

= 50 percent

Therefore from the calculations above, the efficiency of this ramp is 50 percent

because it travels in smaller waves then all other colors, causing it to be the most visible color