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Dafna11 [192]
2 years ago
6

Hello people ~Sound cannot travel through(a) air(b) water(c) air(d) vacuum​

Physics
2 answers:
SVETLANKA909090 [29]2 years ago
7 0

Answer:

Vaccum

Explanation:

  • Sound travels through the particles of different matter
  • In vaccum there is no air so no matter and so no particles .
  • So sound can't travel through vaccum.

You can test it .

  • Take a speaker and keep it inside a bottle ,close it .
  • You won't hear any sound
myrzilka [38]2 years ago
5 0

Answer:

Option D. Vacuum

Explanation:

Sound cannot travel through vacuum

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Initial velocity 10 m/s accelerates at 5 m/s for 2 seconds whats the final velocity
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<em>The final velocity is 20 m/s.</em>

Explanation:

<u>Constant Acceleration Motion</u>

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Squids and octopuses propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracti
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Answer:

A) The speed of the water must be 8.30 m/s.

B) Total kinetic energy created by this maneuver is 70.12 Joules.

Explanation:

A) Mass of squid with water = 6.50 kg

Mass of water in squid cavuty = 1.55 kg

Mass of squid = m_1=6.50 kg- 1.55 kg=4.95 kg

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B) Kinetic energy does the squid create by this maneuver:

Kinetic energy of squid = K.E  =\frac{1}{2}m_1v_1^{2}

Kinetic energy of water = K.E' = \frac{1}{2}m_2v_2^{2}

Total kinetic energy created by this maneuver:

K.E+K.E'=\frac{1}{2}m_1v_1^{2}+\frac{1}{2}m_2v_2^{2}

=\frac{1}{2}\times 4.95 kg\times (2.60 m/s)^2+\frac{1}{2}\times 1.55 kg\times (8.30 m/s)^2=70.12 Joules

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