Answer:
A) 80 N
Explanation:
The closer the particles get, the stronger the Coulomb force, which elongates choices C and D. The Coulomb force is inversely proportional to the distance squared. If the distance is cut in half, the force is multiplied by the reciprocal of (1/2)^2, which is 4. Multiplying it out, 20 times 4 is 80 N.
When multiple forces are at work on an object, the net force is called a <em>resultant</em>, because it's a sum of vectors, and a sum of vectors is called their resultant.
The correct answer is remain the same because if the particles and temperature remain constant, when the pressure increases the temperature is not increasing so it would just stay the same
Answer:
Explanation:
Given:
- work done to stretch the spring,
- length through which the spring is stretched beyond equilibrium,
- additional stretch in the spring length,
<u>We know the work done in stretching the spring is given as:</u>
where:
k = stiffness constant
Now the work done in stretching the spring from equilibrium to (
):
So, the amount of extra work done:
