Answer: P= W/t so P=50/20 =2.5 W
The answer is focal point.
The focal length is the distance from the lens (or mirror) to the focal point. The focal point is <span>the point at which rays of light converge.</span>
If the radius of a circle of area A and circumference C is doubled, <u>the new circumference</u> of the circle, in terms of C, <u>will be</u> equal to 2C.
The area (A) of a circle is given by:
(1)
And a circumference (C) is:
(2)
Where:
r: is the radius
<u>If the radius</u> of a circle and circumference <u>is doubled</u>, the new circumference of the circle is:

Therefore, the new circumference of the circle in terms of C is equal to 2C.
To find more about circumference, go here: brainly.com/question/4268218?referrer=searchResults
I hope it helps you!
Explanation:
The second law states that the greater the mass of an object, the more force it will take to accelerate the object. There is even an equation that says Force = mass x acceleration or F=ma. This also means that the harder you kick a ball the farther it will go.