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3 years ago

Giải giúp mình bài vậtys này với

Physics

1 answer:

Ronch [10]3 years ago

7 0

The choice c. 100 cm / s²

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$a \: max = {w}^{2} A = {\pi}^{2} \times 10 = 10 \times 10 = 100 \: \frac{cm}{ {s}^{2} }$

I hope I helped you^_^

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3 years ago

A sealed cubical container 10.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 24.0°C. Fin

rodikova [14]

This question involves the concepts of general gas equation and pressure.

The force exerted by the gas on one of the walls of the container is "74.08 KN".

First, we will use the general gas equation to find out the pressure of the gas:

$PV = nRT$

where,

P = Pressure of the gas = ?

V = Volume of cube = (side length)³ = (10 cm)³ = (0.1 m)³ = 0.001 m³

n = no. of moles = 3 (since molecules equal to avogadro's number make up 1 mole)

R = general gas constant = 8.314 J/mol.K

T = Absolute Temperature = 24°C + 273 = 297 K

Therefore,

$P = \frac{(3)(8.314\ J/mol.k)(297\ K)}{0.001\ m^3}$

P = 7407.78 KPa

Now, the force on one wall can be given as follows:

$P =\frac{F}{A}\\\\F=PA$

where,

A = area of one wall = (side length)² = (0.1 m)² = 0.01 m²

Therefore,

$F=(7407.78\ KPa)(0.01\ m^2)\\$

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Learn more about the general gas equation here:

brainly.com/question/24645007?referrer=searchResults

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3 years ago

How did science of cartography came in India

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3 years ago

A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s2, what is its velocity after 2 s?

jeka57 [31]

Answer:

3m/s

Explanation:

Given parameters:

Initial speed = 2m/s

Acceleration = 0.5m/s²

Time = 2s

Unknown:

Final speed = ?

Solution:

To solve this problem, we apply the right motion equation;

V = U + at

V is the final speed

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a is the acceleration

t is the time

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V = 2 + 1

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3 years ago