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2 years ago

1. An object of mass 300 kg is observed to

Physics

1 answer:

vekshin12 years ago

4 0

Answer:

The force required will be "300 N".

Explanation:

The given values are:

Mass of object,

m = 300 kg

Acceleration,

a = 1 m/s

Now,

The force will be:

⇒ $F=m\times a$

On substituting the values, we get

⇒ $= 300\times 1$

⇒ $=300 \ N$

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Answer:

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Explanation:

Given:

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Molar mass of hydrogen, $M_H=2$

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P = pressure of the gas

V = volume of the gas

n= no. of moles of the gas molecules

R = universal gs constant

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m = mass of gas in grams

M = molecular mass of the gas

∴Eq. (1) can be written as:

$PV=\frac{m}{M}.RT$

$P=\frac{m}{V}.\frac{RT}{M}$

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So,

$P=\rho.\frac{RT}{M}$

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$\rho_O.\frac{RT}{M_O}=\rho_H.\frac{RT}{M_H}$

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∴The molecules of oxygen are more densely packed than the molecules of hydrogen in the same volume at the same temperature and pressure. So, <em>the number of oxygen molecules in the left container greater than the number of hydrogen molecules in the right container.</em>

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2 years ago