There is a tiny hole in the center plate, so a moving particle can pass through the hole. If an electron moves from A to B along a straight path, what would be the change in its potential energy.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray