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aniked [119]
3 years ago
14

after singing for a few minutes the soloist rejoins the choir a second choir, consist of 90 additional singers then joins in eac

h group of 10 singers sings with the same intensity as the first 10 person choir now how many decibels of sound intensity as the first 10 person choir now how many decibels of sound intensity are being produced
Physics
1 answer:
vredina [299]3 years ago
7 0
If the soloist produces "x" decibels and the 10-person choir produces "y" decibels, combined they will produce "x+y" decibels. 

The second choir has 90 additional singers, we base our description on the first choir. If a 10-person choir produces "x+y" decibels, then the 90 person choir produces 10 (x+y) decibels. 
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tatuchka [14]

Answer:

0.25 m

Explanation:

The period of a pendulum is given by

T=2 \pi \sqrt{\frac{L}{g}}

where  in this case

T = 1.0 s is the period of the pendulum

g = 9.81 m/s^2 is the acceleration due to gravity

L is the length of the pendulum

Re-arranging the equation and solivng for L, we find the length of the pendulum:

L=g (\frac{T}{2 \pi})^2=(9.81 m/s^2)(\frac{1.0 s}{2\pi})^2=0.25 m

5 0
3 years ago
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Semmy [17]
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8 0
3 years ago
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Vikki [24]

Answer:

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Explanation:

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8 0
3 years ago
Which of the following statements is FALSE about collisions? (Consider Newton's Laws an the Conservation of Momentum.)
pantera1 [17]

<u>The following statements are false about collisions: </u>

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Answer: Option B, and D

<u>Explanation: </u>

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But the statements regarding the equal change in velocity of two objects respectively involved in collision always is false, as the conservation of momentum is applicable for isolated system only. So it is true for only isolated system and not in all the systems.

The same reason goes for falsifying the fourth statement which states that total momentum is always conserved between two objects involved in a collision as this statement is only true for isolated system where the conservation of momentum can be applied. Thus the second and fourth statement is false regarding collision.

8 0
3 years ago
The prefix kilo- means
kolezko [41]
Hello There!

Kilo means thousand.
For example:
Kilometer means a thousand meters.

Hope This Helps You!
Good Luck :)
3 0
3 years ago
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