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quester [9]
3 years ago
13

When something is Plumb it is

Physics
1 answer:
pshichka [43]3 years ago
8 0
When something is plumb, it means it's straight up and down. If a post installed in flat ground is leaning in any direction, it's out of plumb. If it's at a 90-degree angle to the ground on all sides, it's plumb. To be plumb is to be parallel with the force of gravity.

✨Hope this helps✨

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Image.
AfilCa [17]
Answer : B - real

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8 0
3 years ago
When at rest, a ruler has a length of 12.0 inches. How fast (in m/s) must the ruler fly past you in order for it to shorten to 6
PIT_PIT [208]

Answer:

2.598×10^8 m/sec

Explanation:

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l is the length of the ruler in moving condition which is given as 6 inches c is the speed of the light and v is the velocity of the ruler.

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\frac{l}{l_0}=\sqrt{1-\frac{v^2}{c^2}}

1-(\frac{l}{l_0})^2=\frac{v^2}{c^2}

1-(\frac{6}{12})^2=\frac{v^2}{c^2}

0.866=\frac{v}{c}

v=0.866\times 3\times 10^8=2.598\times 10^8 m/sec

3 0
3 years ago
Given this graph plotting velocity versus time, estimate the acceleration of object A at points X and Y respectively.
Nikolay [14]
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At what speed a person having 60 kg mass should run to acquire 750 J kinetic energy?
polet [3.4K]

Mass = 60 kg

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v = ?


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v = √25

v = 5 m/s

____________________     the man should run with a velocity of 5m/s

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