An electron is to be accelerated from 3×10^6m/s to 8×10^6m/s. Through what potential difference must the electron passes to accomplish this?Through what potential difference must the electron passes if it is to be slowed from 8×10^6m/s to a halt?

What happens to the light rays when they hit the specimen?

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.