Answer:
I think it's a because it goes thru it and reflects
Answer:
Answer for the question is given in the attachment.
Explanation:
Answer:
D. Uranium
Explanation:
I just got the answer right on my quiz.
Answer:

Explanation:
The heaviside function is defined as:

so we see that the Heaviside function "switches on" when
, and remains switched on when 
If we want our heaviside function to switch on when
, we need the argument to the heaviside function to be 0 when 
Thus we define a function f:

The
term inside the heaviside function makes sure to displace the function 5 units to the right.
Now we just need to add a scale up factor of 240 V, because thats the voltage applied after the heaviside function switches on. (
when
, so it becomes just a 1, which we can safely ignore.)
Therefore our final result is:

I have made a sketch for you, and added it as attachment.
Answer:
algae
Explanation:
The Atlantic off the East Coast of the United States usually appears green. This is due to the presence of algae and plant life.