Author Question: When a proton is traveling at 0.80c, what is the ratio of its kinetic energy to its rest energy? ... (Read 89 times)

savannahhooper · **on:** Jul 29, 2018

When a proton is traveling at 0.80c, what is the ratio of its kinetic energy to its rest energy?

A) 0.60
B) 0.67
C) 0.80
D) 1.2
E) 1.7

Question 2

A single thin slit forms a diffraction pattern, with the first minimum at an angle of 40.0 from central maximum. If monochromatic light of 530.0-nm wavelength is used for the illumination, what is the width of the slit?

A) 825 nm
B) 791 nm
C) 757 nm
D) 723 nm
E) 689 nm