3 years ago

Water contracts on freezing is it incorrect or conrrect

Physics

1 answer:

Alchen [17]3 years ago

3 0

Answer:

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During the winter, what type of precipitation would most likely fall in New York, with temperatures averaging 32 F?

alukav5142 [94]

<span>The correct answer should be snow. Snow falls when the temeprature is 32F or 0C. It doens't fall when temperatures are higher because the water vapor doens't crystalize, and it often doesn't fall when the temperature is much lower either. Sleet is that weird mixture between snow and rain that falls when temperature goes down but is not yet low enough for full snow to go down.</span>

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3 years ago

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A ball attached to a string is whirled around in a horizontal circle having a radius r. If the radius of the circle is changed t

LenKa [72]

Answer:

Option D: Four times the original speed.

Explanation:

A centripetal force accelerates a body by changing the direction of the body's velocity without changing the body's speed.

The speed(v) is therefore constant, thereby making the magnitudes of the of the acceleration and the force constant.

The formula used to calculate the Centripetal force is given below:

$F = \frac{mv^2}{r}$

where F represents the Centripetal force, m represents the mass of the moving body, v represents the speed or velocity at which the body is moving and r represents the radius.

Making the speed the subject of the formula: $v^{2} = \frac{rF}{m} \\$