Answer:
D. Newton is a derived unit.
<h2>
Answer:</h2><h2><u>QUESTION①)</u></h2>
✔First you have to calculate the light's speed in the glass,
<em>You know that in the air and in the void (where the refraction index n is zero) the light's speed C corresponds to 3,0 x 10^8 m/s</em>
So We have :
<em>V = C/n </em>
- V = 3,0 x 10^8/1,56
- V ≈ 1,92 x 10^8 m/s
✔ Now, you know the light's speed in glass, and you know that : the wavelength λ is the quotient of light's speed V on its frequency ν, so :
<em>λ = V/ ν </em>
- λ = 1,82 x 10^8/5,70 x 10^14
- λ ≈ 3.40 x 10^-7 m
- λ ≈ 340 nm
You need to know the formula:
25 = 1/2 * g * t^2
t = √(50/g) = 2.258 s, where I use g = 9.8 m/s^2
A storm surge which is when the winds of the hurricane pull water levels up and cause floods inland
Answer:
11700j
Explanation:
add the two because the plate has to maintain the temp.
2700+9000=11700