3 years ago

7. If a hummingbird hovers 30 cm in front of a window, what will it see?

Physics

1 answer:

Fed [463]3 years ago

5 0

Answer:

it will see the window???

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Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. Imagine the molecules to be uniformly spaced, with e

My name is Ann [436]

To solve the exercise it is necessary to keep in mind the concepts about the ideal gas equation and the volume in the cube.

However, for this case the Boyle equation will not be used, but the one that corresponds to the Boltzmann equation for ideal gas, in this way it is understood that

$PV =NkT$

Where,

N = Number of molecules

k = Boltzmann constant

V = Volume

T = Temperature

P = Pressure

Our values are given as,

$N = 1$

$k = 1.38*10^{-23}J/K$

$T = 27\°C = 27\°C + 273 = 300K$

$P = 1atm = 101325Pa$

Rearrange the equation to find V we have,

$V = \frac{NkT}{P}$

$V = \frac{1(1.38*10^{-23})(300K)}{101325Pa}$

$V = 4.0858*10^{-26}m^3$

We know that length of a cube is given by

$V = L^3$

Therefore the Length would be given as,

$L = V^{1/3}$

$L = (4.0858*10^{-26})^{1/3}$

$L = 3.445*10^{-9}m$

Therefore each length of the cube is 3.44nm

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3 years ago

If John travels 2,387 miles in 2 days, what's his average speed per hour?

klasskru [66]

In 2 days there are 48 hours
to find the average speed per hour, divide 2,387 by 48
Which gets you the answer 49.72
Which rounds up to 50

The average speed is 50mph

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3 years ago

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A certain copper wire has a resistance of 10.5 ω. at what fraction of the length l must the wire be cut so that the resistance o

Delvig [45]

The answer for that questions will be 759. Stars itir

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3 years ago

Which psychiatrist believed the environment was more important to a child's intellectual development than biology? A. B. F. Skin

Ugo [173]

The accurate answer is
The psychiatrist that believed the environment was more important to a child's intellectual development than biology was "D" Sigmund Freud.

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3 years ago

Which item is made from an alloy? steel tray glass plate credit card copper wire

SashulF [63]

Steel tray because steel is an iron-carbon alloy

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3 years ago