Answer:
2.5
Explanation:2.5 +2.5 = 5.0
Answer:
I don't really know
Explanation:
I really wanted to help you, but then I realized i didnt know how to
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.
Liquids are ideally incompressible, so their volume barely changes. They also adapt to whichever shape.
<span>liquid</span>