Answer:
The beam of light is moving at the peed of:
km/min
Given:
Distance from the isalnd, d = 3 km
No. of revolutions per minute, n = 4
Solution:
Angular velocity,
(1)
Now, in the right angle in the given fig.:

Now, differentiating both the sides w.r.t t:

Applying chain rule:


Now, using
and y = 1 in the above eqn, we get:

Also, using eqn (1),


A scientific journal article that is peer reviewed. This is because it is more likely not have factual information and sources to that information.
i will give you 25 points sorry becuase i can't help with that
Answer:
35, I got you bro, i got you
Phonograph. Hope that helps