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3 years ago

14

The balloon contain no gas initially.When it is connected to the cylinder gas enters the balloon the pressure in the cylinder de

creases.Explain why the molecules inside the cylinder exerts a large pressure initially

1 answer:

xeze [42]3 years ago

4 0

Answer:

17

Explanation:

121354

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A wheel is rotating freely at angular speed 420 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initi

Mashcka [7]

Answer:60 rev/min

Explanation:

Given

angular speed of first shaft $\omega _1=420\ rev/min$

Moment of inertia of second shaft is seven times times the rotational speed of the first i.e. If I is the moment of inertia of first wheel so moment of inertia of second is 7 I

As there is no external torque therefore angular momentum is conserved

$L_1=L_2$

$I_1\omega _1=I_2\omega _2$

$I\times (420)=7 I\times (\omega _2)$

$\omega _2=\frac{420}{7}$

$\omega _2=60\ rev/min$

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4. What is the formula for potassium dichromateo?b

Gre4nikov [31]

Formula for potassium dichromate is

K2Cr2O7

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The statement “Harvard University is a better school than the University of Chicago” is an example of

Vikentia [17]

The statement is an opinion because it expresses a preference of an individual than an actual fact.

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Flammable materials, like alcohol, should never be dispensed or used near

Vaselesa [24]

Answer:an open flame

Explanation:

Flammable materials like alcohol should never be dispensed or used near an open flame

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1) Classify each of the following as either a solid, liquid or gas at room temperature.

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Answer:

air gas

diamond solid

copper solid

candle wax solid or melted would be liquid

Explanation:

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3 years ago