Its the first one with the circle and the arrows going around it
The answer is true and when they do hit you pull off to the side and call it in
Answer:
The wavelength is 3500 nm.
Explanation:
d= 
n= 1
θ= 30°
λ= unknown
Solution:
d sinθ = nλ
λ = 
λ = 3500 nm
Answer:

Explanation:
This work done is in the form of Potential Energy so we'll use the formula of Potential Energy.
<u>Given Data:</u>
Mass = m = 250 kg
Acceleration due to gravity = g = 9.8 m/s²
Height = h = 6 m
<u>Required:</u>
Work Done in the form of Potential Energy = P.E. = ?
<u>Formula:</u>
P.E. = mgh
<u>Solution:</u>
P.E. = (250)(9.8)(6)
P.E. = 14700 Joules
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Hope this helped!
<h3>~AH1807</h3>
The number of repetitions per second is called the frequency and is the inverse of the period. The period, T, is normally measured in seconds, and the frequency, ν, in Hertz. When the oscillations<span> (or vibrations) affect the material around them a </span>wave <span>is formed which transports energy away.</span>