Which statements describe diffraction? check all that apply. diffraction occurs when waves interact with a barrier. diffraction occurs because waves pass into a new medium. diffraction occurs when waves interact with a gap. diffraction occurs when waves bounce back in the reverse direction. diffraction occurs in any type of wave—mechanical or electromagnetic.

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n