Author Question: Consider a very small hole in the bottom of a tank that is in diameter and filled with water to a ... (Read 42 times)

theo · **on:** Jul 29, 2018

Consider a very small hole in the bottom of a tank that is in diameter and filled with water to a height of Find the speed at which the water exits the tank through the hole.

A) 44.1 m/s B) 17.64 m/s C) 4.20 m/s D) 48.3 m/s

Question 2

A stopping potential of 0.50 V is required when a phototube is illuminated with monochromatic light of wavelength 590 nm. Monochromatic light of a different wavelength is now shown on the tube, and the stopping potential is measured to be 2.30 V.

What is the wavelength of this new light? (c = 3.00 108 m/s, e = - 1.60 10-19 C, h = 6.626 10-34 J s, 1 eV = 1.60 10-19 J) A) 320 nm
B) 300 nm
C) 340 nm
D) 360 nm
E) 410 nm