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beks73 [17]
3 years ago
13

The speed of sound through diamond is about 12,000 m/s. The speed of sound through wood is about 3,300 m/s. Which statement expl

ains why the speed of sound is different through these materials?(1 point)
They have different rigidities.

They have different temperatures.

They have different phases of matter.

They have different salinities.
Physics
1 answer:
iris [78.8K]3 years ago
3 0

Answer: They have different rigidities.

Explanation:

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Humans first traveled to the Moon in a spacecraft in 1969. What happened as the spacecraft traveled farther from Earth?
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Explanation:

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3 years ago
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A 85 kg lineman tackles a 90 kg receiver. The receiver is running 5.8 m/s, and the lineman is moving 4.1 m/s, at a right angle t
weeeeeb [17]

Answer:

3.59 m/s

Explanation:

We are given that

Mass of lineman,m=85 kg

Mass of receiver,m'=90 kg

Speed of receiver,v'=5.8 m/s

Speed of lineman,v=4.1 m/s

\theta=90^{\circ}

We have to find the their velocity immediately after the tackle.

Initial momentum,P_i=\sqrt{p^2_1+p^2_2}=\sqrt{(85\times 4.1)^2+(90\times 5.8)^2}=627.6 kgm/s

According to law of conservation of momentum

Initial momentum=Final momentum=(m+m')V

627.6=(85+90)V=175V

V=\frac{627.6}{175}=3.59 m/s

3 0
3 years ago
Explain how a projectile might be modified to decrease the air resistance impacting its trajectory.
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Answer:

Explanation:

Explain how a projectile might be modified to decrease the air resistance impacting its trajectory.

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I think its half of pie so you divid that by 3.14 .
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