An 800-g steel plate, in the shape of the isosceles triangle, is lying flat on a frictionless table and is initially at rest. Which of the following forces would cause the triangular plate to translate but not rotate? (In other words, which force or forces would cause the plate to change its position but not its orientation?)

Need only answer if you think you know it

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?

Suppose you hit your hand against the edge of table. using newton’s third law of motion why does my hand hurt? explain