A. IMA: 4
The Ideal Mechanical Advantage (IMA) is given by:
where
is the input distance
is the output distance
For the pulley system in this problem, and , so the IMA is
B. MA: 3.59
The actual mechanical advantage (AMA), or simply the Mechanical Advantage (MA), is given by
where is the output force and is the input force. For the pulley system in this problem, and , so the MA is
C. Efficiency: 89.8 %
The efficiency of a machine is equal to the ratio between the MA and the AMA:
Therefore, in this case,
Answer:
Argon
Explanation:
Argon, an inert gas, is the third most abundant gas in the atmosphere.
Answer:
6.67 minutes
Explanation:
d = Diameter of first telescope = 2 m
d' = Diameter of second telescope = 6 m
Increase in diameter
Time to collect light for first telescope
t = 1 hour = 60 minutes
Time to collect light for second telescope
The time taken would be 6.67 minutes
The Correct Answer is <u>D.Infrared/</u> <em>INFARED has a lower frequency than visible light/</em>
An unconformity, or abnormality in the layers of rocks, signifies that the process of layering was somehow interrupted. The only feasible choice for this would be (B), where erosion would have interrupted the layering process.