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Murrr4er [49]
3 years ago
11

CALLING ALL BRAINLIERS THE FIRST PERSON TO ANSWER GETS A BRAINLIEST ANNNNDDD 30 POINTS BUT THE ANSWER HAS GOT TO BE RIGHT.

Physics
2 answers:
cupoosta [38]3 years ago
3 0
The answer would be A
Ronch [10]3 years ago
3 0
It is a that isthe answer 
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If the mass of the book is 50 sliding with acceleration 1.2 m/s ^ 2 then the friction force is
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2 years ago
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 20 cm apart. The sound
Sophie [7]

Answer:

a. Wavelength = λ = 20 cm

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Explanation:

a. The distance between the two speakers is 20cm. SInce the intensity is maximum which refers that we have constructive interference and the phase difference must be an even multiple of π and equivalent path difference is nλ.

Now when distance increases upto 30 cm between the speakers, the sound intensity becomes zero which means that there is destructive interference and equivalent path is now increased from nλ to nλ + λ/2.

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(nλ + λ/2) - nλ = 30-20

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b. at what distance, sound intensity will be maximum again.

For next point calculation for maximum sound intensity, the path difference must be increased (n+1) λ. The distance must increase by λ/2 from the point of zero intensity.

= 30 + λ/2

= 30 + 20/2

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7 0
3 years ago
Bus starts from rest if the acceleration of the bus is 0.5 MS squared what will be the velocity at the end of two minutes and wh
Nutka1998 [239]

Explanation:

Given that,

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The number of<br> • in the atom of an element determines its chemical properties.
anyanavicka [17]

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6 0
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