Option B. By not being 100% efficient, it shows that some energy is lost to unusable or unwanted sources
Answer: Context Effect
Explanation:
<u>Context effect</u> refers to <u>the influence that external factors (the environment, for example) have on the perception of a stimulus</u>. This is a well-known aspect of cognitive psychology.
In fact, the situation stated in this question is a good example: It is not the same to observe the Moon with a naked eye and taking into account factors such as cloudiness, dust and whatever is surrounding this view that have effects on the observation; than observing this same Moon with a narrow tube in which our eyes focus only on the lunar surface, without taking into account the rest that surrounds that horizon.
Answer:
it is very hard question for me sorry i cant solve it
Answer:
a) Tb = m (g + vb² / R)
, b) Tt = m (g - vt² /R), c) Tb = Ty + (vb² -vt²) /R
Explanation:
a) For this exercise we will use Newton's second law, at the bottom
Tb - W = m a
Where the acceleration is centripetal
a = v² / R
Tb = W + m vb² / r
Tb = m (g + vb² / R)
b) the tension at the top
-Tt -w = m a
Tt = W - m vt² / R
Tt = m (g - vt² / R)
c) write the two equations and solve system
Tb = m (g + vb² / R)
Tt = m (g - vt² / R) (-1)
We multiply by (1) and add
Tb -Ty = vb² /R -vt² /R
Tb = Ty + (vb² -vt²) / R
The magnitude of displacement =
the distance between start-point and end-point,
regardless of the route followed along the way.
Any motion that ends up where it started has zero displacement.
An object on a circular path starts over at zero displacement every time
it completes a full revolution. So does a race-car on a track.