Answer:

Explanation:
if rho is the resistivity, then according to the proper equation re-arrangement the resistance is G. Then, Area can be calculated by radius and dividing their product by the length of channel.
Answer:
31.25
Explanation:
The formula for the potential energy of a spring is
, where x is the distance in meters the spring is stretched. Plugging in the numbers that you are given, you get
. Hope this helps!
Because if you have a large population, there is a need for more food and water, but if you don't have enough food and water to support a large population, that limits it from happening
Answer:
Explanation:
Input refers to the amount of energy put into a device, and output refers to the amount of energy that comes out. A device may change the type of energy but not the amount. For example, a light bulb's input energy is the form of electrical energy, and its output energy is in the form of light and heat. Efficiency.