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Olenka [21]
3 years ago
7

A bicyclist travels 30 km in 2 hours, what is their average speed?

Physics
1 answer:
Mamont248 [21]3 years ago
3 0

Explanation:

average speed = total distance ÷ total time taken

=30÷2 = 15 km/h

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A transverse wave has a frequency of 200 Hz with a wavelength of 1.0 m. Determine the speed
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Answer:

200 m\ s Ans .....

Explanation:

Data:

f = 200 Hz

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v = ?

Formula:

v = f w

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v = 200 m\s <em>A</em><em>n</em><em>s</em><em> </em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

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Question:

What two forces are balanced in what we call gravitational equilibrium?

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Answer:

The correct answer is C) Outward Pressure and Inward gravity                                                        

Explanation:

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As the weight increases in the lower layers of the sun, the pressure also increases to maintain this balance.   So you find that the outward push of pressure balances the inward pull of gravity thus creating an equilibrium.

Why is gravitational equilibrium important?

The simple answer is <u>balance. </u> If for instance the sun as a stable star (which has gravitational equilibrium) loses it's balance, it becomes highly unstable and prone to violent outbursts. These outbursts are caused by the very high radiation pressure at the star's upper layers, which blows significant portions of the matter at the "surface" into space during eruptions that may rage for several years. Of course such a condition is adverse to the existence and support of life.

Cheers!

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