Author Question: Isotope A has a decay constant of 0.723 s-1 and isotope B has a decay constant of 0.514 s-1. Which ... (Read 243 times)

kellyjaisingh · **on:** Jul 29, 2018

Isotope A has a decay constant of 0.723 s-1 and isotope B has a decay constant of 0.514 s-1. Which isotope has a longer half-life?

A) isotope A B) isotope B

Question 2

A beam of light is polarized in a vertical plane and has an intensity I0.

The beam passes through an ideal polarizer and then through an ideal analyzer whose axis is set horizontally. If the axis of the polarizer is set at 60 with the vertical, what is the ratio of the intensity of the final beam to I0?
A) 0.37 B) 0.43 C) 0.19 D) 0.25 E) 0.31