two charges +q and +q are separated by a distance joining the two nuclei, if the third charge Q is placed at the centre, what will be the ratio Q/q?

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

there are no contact forces mentioned on the list of choices that you've provided.