four equal charges of +3microcolumb are placed at the four corners of a square that is 40cm on a side. Find the force on any one of the charge.​

A50.0-n box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. you observe that at one instant the box is sliding to the right at and that it stops in 2.25 s with uniform acceleration. what magnitude force does friction exert on this box

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called