Answer: 15 cm
Explanation:
According to the Lens Equation we have the following:
(1)
Where:
is the focal length
is the distance between the candle (the object) and the lens
is the distance between the image and the lens
Isolating :
(2)
Solving:
(3)
Finally:
This is where the image is located
Let the vector position of the object in the (x-y) plane be
The applied force is
By definition, the applied torque is
Answer:
It would be "Researchers found environmental safe replacements for CFC's"
