Suppose if you whirl a yo-yo about your head in a horizontal circle. in what direction must a force act on the yoyo? what exerts the force?

Direction of force towards the center and string apply the force.      

Explanation:

Lets take

Mass of yo-yo =m

Length of string = L

Angular speed = ω

The radial acceleration a = ω² L

Then the radial force on the yo yo given as

F = m ω² L

Then this radial force act towards the center of the circle formed by yo- yo.The force exerted by string.

So the direction of force towards the center and string apply the force.

choosing tennis and golf balls is your inde choice.

their mass and volume are dep

part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by