Answer:
reflected angle - secod mirror = 60°
Explanation:
I attached an image with the solution to this problem below.
In the solution the reflection law, incident angle = reflected angle, is used. Furthermore some trigonometric relation is used.
You can notice in the image that the angle of reflection in the second mirror is 60°
Answer:
The velocity (
) of the wave is 3.08
.
Explanation:
According to the figure, the distance (
) between a trough and its adjacent crest is
. Also the wavelength (
) of the wave is
. Pepe and Alfredo count 11 crests to pass the raft in
= 21.5 s.
So, the time period (
) of oscillation of the wave is

So, the velocity (
) of the wave is

He will be a pilot and he will fly the plane over bridges fewwww
The heat remains constant because there’s nothing to cool it down