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Elza [17]
3 years ago
6

The duration between the emission of the sound from the echo reception is: t - 1.5 s. the distance between the observer and the

sound receiver knowing that the speed of sound in the air is worth
V - 340 m/s is:
Physics
2 answers:
ryzh [129]3 years ago
7 0


A sound wave has a frequency of 60.0 Hz. What is its period? If the speed of sound in air is 343 m/s, what is the wavelength of the sound wave? 25. Water waves in ...
algol133 years ago
4 0

Answer:

. tt tt t t t t t t tt t tt t t jk j k j k j k j k jk k j k jk

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How much energy is used when the incandescent bulb is left on for 12 hours
Reil [10]

You haven't told us the "wattage" rating of the bulb.  We'll just have to call it ' W ' .

The bulb uses energy at the rate of W watts, or 0.001W kilowatts.

In 12 hours, it uses <em>0.012W kilowatt-hours </em>of energy.

= = = = =

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3 0
3 years ago
Stephen Strasburg throws out the opening pitch at Nationals Park. The ball starts at rest, but
tankabanditka [31]

Answer:

Force = 304.5 Newton

Explanation:

Given the following data;

Initial velocity, u = 0m/s (since it started from rest).

Final velocity, v = 42m/s

Time, t = 0.02 secs

Mass = 0.145 kg

To find the force;

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Force = 304.5 Newton

4 0
3 years ago
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