A particular metal has a work function of 1. 05 ev. A light is shined onto this metal with a corresponding wavelength of 324 nm. What is the maximum velocity of the photoelectrons produced? (hint: 1ev = 1. 6022 x 10-19 j, mass of an electron = 9. 11 x 10-31 kg).

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

Which of the following does the reading test of the sat ask you to do ?

Ahands-free device may only be used if it can be activated or deactivated with a