Cho AB 45cm, BC 32cm, ABC 100. Công của lực điện để một electron đi từ A đến B là -7,327.10^-17 J và từ B đến C là -4,111.10^-17 J . Tính

cường độ điện trường.

Which two particles are found in the center of an atom

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?

Your friend increases her force on the desk by 30n . she doesn't change the direction of her push . what happens to the net force on the desk .will the desk accelerate