Answer:
The potential energy is 
Explanation:
Given that,
Force 
We need to calculate the potential energy
Using formula of work done

Put the value of F

On integration

...(I)
U = 0, x = 0 so C = 0
Put the value of c and α in equation (I)


Hence, The potential energy is 
Answer:
D. Validity group
Explanation:
A validity group is not necessarily a component of a normal experiment.
A normal experiment is made up of the dependent variables, independent variables, and most times the control group.
- The dependent variable is one that relies on the outcome of the effect produced from the experimental design
- The independent variable is the one that causes a desired effect under the study.
- The control group is a group that does not receive any treatment nor attenuation of the conditions.
Answer:
very thick cloth or something maybe wool
Explanation:
<span>Answer:
Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915) which describes gravity not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass.</span>