A 6kg object experiences a force of 15N to the right and 2N to the left. What is its resulting acceleration?

What do radio waves and microwaves have in common? both are at the side of the spectrum that has the shortest wavelengths. both are at the side of the spectrum that has the lowest radiant energy. both are at the side of the spectrum that has the lowest frequency. both are found next to visible light on the electromagnetic spectrum.

What is the fate of the electrons that interact with a specimen in an electron microscope?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity