I think it's D. Options C and D are true. The graph shows an increase in speed from points 6 to 12, which means Option C is true. It shows an even bigger increase in speed from points 24 to 30, and since bikes go faster when traveling downhill, I would think that Option D was correct as well.
Answer:
x-component of velocity = 5.7 m/s
y-component of velocity = -1.4 m/s
Explanation:
Use first equation of motion to find components of velocity at a given time:
where, 
is the final velocity, 
is the initial velocity, 
is the acceleration and 
is the time.
Given:
Light intensity and distance is
interrelated. When the distance changes, the intensity of light changes. This relationship
is called inverse-square relationship. The inverse-square relationship refers
to the fact that when distance changes, light intensity also changes: inverse
because when distance decreases, light density increases and when distance
increases, the latter decreases; square refers to the fact that light intensity
and distance is not a one-to-one relationship.
Answer:
Explanation:
efficiency of carnot engine operating between 1100 K and 320 K
= 1100 - 320 / 1100
= .709
efficiency of heat engine = 120 / 400 = .30
2 nd law thermal efficiency of heat engine = .30 x 100 / .709
= 42.31 % .
Any work a machine does is commanded by a human (in code or any input) or else they are sentient, so humans are still required.
