How many stairs?
You can use this to find the work
U
W=mgh
And the power by
P=W/T
Answer:
yes it doesn't matter
Explanation:
it doesn't matter because troughs and crests are the same and either can be used
When a parallel beam of light passes through a convex lens, the rays become farther from one another when the come out. This process of rays is called ''to diverge''. The concave lens makes rays of light diverge, so it is called diverging lens.
A. Condensation
Hope this helps!!!