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

[viki]

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

[fatboyy09]

Answer to Question 1

Answer: B

Answer to Question 2

E

[viki]

Wow, this really help

[carlsona147]

Thanks for the timely response, appreciate it