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3 years ago

An echo is not heard in a small room.why ? give reason

Physics

2 answers:

JulsSmile [24]3 years ago

7 0

Answer:

They can't hear an echo in small room because in it the sound can't be reflected back. For an echo of a sound to be heard,the minimum distance between the source of sound and the walls of the room should be 17.2 m.

hopw it helps

Stella [2.4K]3 years ago

7 0

The room is too small it has to be ag least 17.2 meters for the noise to bounce

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If velocity is 0.2m/s, what is the kinetic energy?

Natalija [7]

$\huge\boxed{♧ \: \mathfrak{ \underline{Answer} \: ♧}}$

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3 years ago

Which of the following terms describes one’s ability to understand how another person is feeling?

liq [111]

Answer:

Empathy

Explanation:

Empathy: to understand the thoughts, feelings, or emotional state of another person

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3 years ago

A Meteorite Strikes On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, leaving a dent 22 cm deep in the tru

vagabundo [1.1K]

Answer:

Acceleration of the meteorite, $a=-38409.09\ m/s^2$

Explanation:

It is given that,

A Meteorite after striking struck a car, v = 0

Initial speed of the Meteorite, u = 130 m/s

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So, the deceleration of the Meteorite is $-38409.09\ m/s^2$ . Hence, this is the required solution.

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3 years ago

Which of the following situations would cause the greatest decrease in the motion of molecules in a system?

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3 years ago

Read 2 more answers

A steel wire in a piano has a length of 0.680 m and a mass of 4.600 ✕ 10⁻³ kg. To what tension must this wire be stretched so th

garik1379 [7]

Answer:

728 N

Explanation:

$L$ = length of the wire = 0.680 m

$m$ = mass of the steel wire = 0.0046 kg

$f$ = Fundamental frequency = 261.6 Hz

$T$ = tension force in the steel wire

Fundamental frequency in wire is given as

$f = \frac{1}{2L} \sqrt{\frac{TL}{m} } \\261.6 = \frac{1}{2(0.680)} \sqrt{\frac{T(0.80)}{0.0046} }\\(2) (0.680) (261.6) = \sqrt{\frac{T(0.80)}{0.0046} }\\355.8 = \sqrt{\frac{T(0.80)}{0.0046} }\\355.8^{2} = \frac{T(0.80)}{0.0046}\\T = \frac{(355.8^{2}(0.0046))}{0.80} \\T = 728 N$

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3 years ago

An echo is not heard in a small room.why ? give reason​

An echo is not heard in a small room.why ? give reason