If stretching a spring 3.50m causes a force of 20.0N, what is the spring constant of the spring? A. 5.71 N/m
B. 70.O N/m
C. 16.5 N/m
D. 23.5 N/m ​

A

Explanation:

Remark

One of the handiest things to know in physics is something called dimensional analysis.

Look at the answers you are given. All of them are in N/m. That means 2 things.

No conversions are necessary

You divide Newtons / meters. You don't need to worry too much about a formula.

But if need a formula, it is F = k * x and you need k

x = 3.5 m

F = 20.0 N

k = F / x

k = 20.0/3.5

k = 5.71 to 3 places.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation: