Author Question: Argon rather than air is the gas used in incandescent bulbs because A) it produces a pleasing ... (Read 49 times)

viki · **on:** Jul 29, 2018

Argon rather than air is the gas used in incandescent bulbs because

A) it produces a pleasing bluish glow.
B) oxygen in air oxidizes the lamp filament.
C) argon is relatively plentiful.
D) none of the above

Question 2

A proton moving with a velocity of 4.0 104 m/s along the +y-axis enters a magnetic field of 0.20 T directed towards the -x-axis. What is the magnitude force acting on the proton?

A) 8.0 10-15 N
B) 3.9 10-15 N
C) 2.6 10-15 N
D) 0 N
E) 1.3 10-15 N