<span>Option C. The sodium vapor lamp is a gas discharge lamp that uses sodium vapor for the production of light. It is an efficient lighting source that provides lumens per watt and produces bright yellow. It has a monochromatic light that makes its applications are reduced. It is used in street lighting, streets, highways, etc.</span>
Answer: B. A hearing by a federal court of appeals
Answer:
Negative work done of 30729.6 Joules
Explanation:
Since work done is dot product of force and displacement. so,
W= F.d
W= F d cosΘ
where Θ is the angle between force and displacement. Since resistive force and displacement makes an angle of 180 (as one is pointed east and other west). So,
W = (7.92)(1940)(cos (180)) (distance should be in meter)
W = 15364.8(-1)
W = -15364.8 (for going east)
Total work done will be twice of that as the resistive force and distance are same for the way back.
W = -15364.8 + (-15364.8)
W = -30729.6 Joules
Hey there!
The answer is C
Hope this helps you!
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