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3 years ago

How is sound different from wind?

Physics

1 answer:

Mashutka [201]3 years ago

3 0

Answer:

Wind - the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction. Sound wave - a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.

Sound wave travels faster in the air when it is with the wind. ... In contrast, when sound wave travels against the wind, that is, when it travels in the opposite direction with the wind, the speed of sound will be reduced by the wind speed, resulting in a lower speed in the upper region.

Explanation:

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How many hours would it take for a single prokaryote, dividing every 20 minutes by binary fission in a favorable environment, to

butalik [34]

Answer:

$170\frac{2}{3} hrs$

Explanation:

in every 20 minutes the prokaryote divides to produce one of itself .

Mathematically,

20 mins:1 of its kind

x mins :512 of its kind

Where x is the amount of time (in minutes) needed by the prokaryote to produce 512 of its kind.

This implies that,

By cross multiplying we obtain,

$x = 20 \times 512 = 10240mins$

We now convert the time in minutes into hours.

Knowing very well that 60 minutes equals an hour, to convert 10240 minutes to hour we divide by 60.

This implies that,

$10240 \div 60 = 170 \frac{2}{3}$

8 0

3 years ago

A diffuser has an inlet area of 60 cm2. Air enters the diffuser with a density of 0.748 kg/m2. The velocity at the inlet is 150

sergij07 [2.7K]

Answer:

$A_{out} = 134.64\,cm^{2}$

Explanation:

The area of the outlet can be found by means of the Principle of Mass Conservation. A diffuser works usually as a steady state system:

$\dot m_{in} - \dot m_{out} = 0$

$\rho_{in}\cdot A_{in}\cdot v_{in}- \rho_{out}\cdot A_{out}\cdot v_{out} = 0$

The area of the outlet is:

$A_{out} =\frac{\rho_{in}\cdot A_{in}\cdot v_{in}}{\rho_{out}\cdot v_{out}}$

$A_{out} = \frac{(0.748\,\frac{kg}{m^{3}} )\cdot (60\,cm^{2})\cdot (150\,\frac{m}{s})}{(2\,\frac{kg}{m^{3}} )\cdot (25\,\frac{m}{s} )}$

$A_{out} = 134.64\,cm^{2}$

5 0

3 years ago

what is the wavelength of the radio waves transmitted by an FM station at 90MHz where 1M=10^6 AND THE SPEED OF RADIOWAVE IS 3*10

S_A_V [24]

Answer: 0.3m

Explanation:

Given the following :

Speed of radio wave(V) = 3 × 10^8 m/s

If 1M = 10^6

Frequency(F) = 90MHz = 90 × 10^6

Wavelength (λ) =?

Speed of wave (V) = frequency(F) × wavelength(λ)

V = fλ

(3 × 10^8) = (90 × 10^6) × λ

λ = (90 × 10^6) / (3 × 10^8)

λ = 30 × 10^(6 - 8)

λ = 30 × 10^-2

λ = 0.3m

3 0

4 years ago

How are humidity and precipitation related?

german

Answer:

Relative humidity depends on the amount moisture actually in the air at some temperature to the amount of moisture that the air can hold.

For instance, at 25 deg C the air has a saturation pressure of 23.76 mm of Hg.

That means that if at that temperature the pressure of the water vapor in the air reaches 23.76 mm Hg then the air is 100% saturated.

I believe the standard air pressure at 25 deg C is 760 mm Hg.

Now if the pressure of the water vapor in the air is 1/2 * 23.76 = 11.88 mm then the air is 50% saturated and the relative hunidity is 50 %.

At 100% relative humidity rain occurs (the air can't hold any more water).

7 0

3 years ago

Read 2 more answers

A combustion reaction occurs when a substance reacts quickly with

WITCHER [35]

Answer:

Oxygen

Explanation:

Any sort of combustion requires oxygen

5 0

3 years ago

How is sound different from wind?​

How is sound different from wind?