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Vlada [557]
3 years ago
9

What's the speed of a sound wave through water at 25 Celsius

Physics
1 answer:
mote1985 [20]3 years ago
6 0
1500m/s ...........................
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What is the car's average velocity
Arisa [49]

Answer:

vận tốc bằng quãng đường chia thời gian

Explanation:

v=s/t

7 0
3 years ago
How do wavelength and amplitude differ in simple waves?
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The amplitude measures the height of the crest of the wave from the midline. The wavelength measures the horizontal distance between cycles.

Explanation:

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3 years ago
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The loudness of a sound is the waves amplitude <br><br><br><br> True or false
kakasveta [241]

Answer:

true i think

Explanation:

The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound. In Figure 10.2 sound C is louder than sound B. The vibration of a source sets the amplitude of a wave.

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2 years ago
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4. What are 3 things that you can think of doing, that would reduce<br> your electricity bill?
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Turn off standby appliances.
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3 0
2 years ago
The gravitational force, F, between an object and the Earth is inversely proportional to the square of the distance from the obj
andreev551 [17]
<h2>Weight of astronaut 2450 miles above the Earth is 80.38 pounds</h2>

Explanation:

Given that gravitational force, F, between an object and the Earth is inversely proportional to the square of the distance from the object and the center of the Earth.

             F=\frac{k}{r^2}

Where F is gravitational force  between an object and the Earth, r is the distance from the object and the center of the Earth and k is a constant.

Radius of Earth = 4000 miles

In case 1 an astronaut weighs 209 pounds on the surface of the Earth,

              209=\frac{k}{4000^2}\\\\k=3.344\times 10^9

Now we need to find weight of astronaut 2450 miles above the Earth    

              r = 4000 + 2450 = 6450 miles

               F=\frac{k}{6450^2}\\\\F=\frac{3.344\times 10^9}{6450^2}=80.38pounds

Weight of astronaut 2450 miles above the Earth is 80.38 pounds  

3 0
3 years ago
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