Answer:
32.5 m/s
Explanation:
Velocity of a wave = frequency * wavelength
Velocity = 65 /s * 0.5 m
Velocity = 32.5 m/s
Answer:
a.
Explanation:
Use accleration formula,
The initial velocity and final velocity is at zero. and t=10
So we got
so
a is the answer
Before 7 after 9. A pH smaller than 7 indicates acidity with 0 being completely acidic. A pH greater than 7 shows alkalinity with 14 being completely alkaline. 7 is neutral. Since NaOH is alkaline, adding it to a neutral substance would increase the pH and it would increase from 7 to 9.
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,