Acart is pushed to the right with a force of 15 n while being pulled to the left with a force of 20 n. the net force on the cart is?

The net force of the cart when it is pushed to the right with a force of 15N.

Explanation:

To find the force of net, which is calculated by the  formula.

The Net Force= Addition of the force applied on the respective  direction.

The Net Force here is given by

The Net Force = 15-20 (A force towards the right and a force towards left, two opposite so subtraction).

Hence

Thus the Net Force = -5(The force towards left, so it gets a  negative value).

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach