Author Question: Bree dips a pair of prongs onto a water surface and produces waves. When she dips more frequently ... (Read 65 times)

krzymel · **on:** Jul 29, 2018

Bree dips a pair of prongs onto a water surface and produces waves. When she dips more frequently the resulting waves

A) have shorter wavelengths.
B) remain the same in wavelength.
C) have longer wavelengths.
D) move faster.
E) none of the above

Question 2

What is the longest wavelength of electromagnetic radiation that will eject photoelectrons from sodium metal for which the work function is 2.28 eV?

(c = 3.00 108 m/s, h = 6.626 10-34 J s, 1 eV = 1.60 10-19 J)
A) 580 nm
B) 499 nm
C) 633 nm
D) 668 nm
E) 545 nm