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3 years ago

What are the benefits that you can get from playing volleyball

Physics

1 answer:

timurjin [86]3 years ago

3 0

So I played volleyball and the benefits I got was my arm strength got better and I learned how to jump higher

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How many atoms of each element are in the chemical formula NH4NO3?

Igoryamba

2 Nitrogen, 4 Hydrogen, 3 Oxygen

9 atoms per molecule.

NH4, ammonium (not to be confused with ammonia NH3) is a 1+ ion and NO3 is 1-.

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Using your knowledge of electronics, explain how these circuits operate and what kind of gate each is.

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Answer:

I don't know about these problems at all.

Explanation:

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3 years ago

If the frequency of sound is doubled, how will its speed change? how will its wavelength change?

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From the given equation we can deduce what changes will occur if the frequency of the sound is doubled

V= f (λ)

Speed = frequency. Wavelength

When the frequency is doubled, speed will not change. Because speed depends on factors like temperature, air pressure, density of the gas. Since all these factors are unchanged thus speed will remain unchanged

Frequency is the number of waves produced per second. Frequency and wavelength are inversely proportional .Thus, if the frequency is doubled the wavelength would be halved.

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3 years ago

A police car is driving down the street with it's siren on. You are standing still on the sidewalk beside the street. If the fre

AleksandrR [38]

Answer:

A) 1568.60 Hz

B) 1437.15 Hz

Explanation:

This change is frequency happens due to doppler effect

The Doppler effect is the change in frequency of a wave in relation to an observer who is moving relative to the wave source

$f_(observed)=\frac{(c+-V_r)}{(C+-V_s)} *f_(emmited)\\$

where

C = the propagation speed of waves in the medium;

Vr= is the speed of the receiver relative to the medium,(added to C, if the receiver is moving towards the source, subtracted if the receiver is moving away from the source;

Vs= the speed of the source relative to the medium, added to C, if the source is moving away from the receiver, subtracted if the source is moving towards the receiver.

A) Here the Source is moving towards the receiver(C-Vs)

and the receiver is standing still (Vr=0) therefore the observed frequency should get higher

$f_(observed)=\frac{C}{C-V_s} *f_(emmited)\\=\frac{343}{343-15}*1500\\ =1568.60 Hz$

B)Here the Source is moving away the receiver(C+Vs)

and the receiver is still not moving (Vr=0) therefore the observed frequency should be lesser

$f_(observed)=\frac{C}{C+V_s} *f_(emmited)\\=\frac{343}{343+15}*1500\\ =1437.15 Hz$

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3 years ago

What are newtons three laws of motion?

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Newton worked in many areas of mathematics and physics. He developed the theories of gravitation in 1666, when he was only 23 years old. Some twenty years later, in 1686, he presented his three laws of motion in the "Principia Mathematica Philosophiae Naturalis." hope that helps

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What are the benefits that you can get from playing volleyball​

What are the benefits that you can get from playing volleyball