4 years ago

What are three basic conditions for a hurricane to form

Physics

1 answer:

tester [92]4 years ago

3 0

High ocean temperatures of above 26.5 degrees Celsius and coriolis effect( deflection of winds create spiraling motion)

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A magnetic field with the same orientation as the Earth's field is said to

Alex73 [517]

Answer: Normal polarity

Explanation:

Magnetic field in line with the earth field is said to have polarity.

If the magnetic field is in opposite direction with the earth's field, then, the polarity is said to be a reversed polarity.

But since the magnetic field is with the same orientation as the Earth's field, it is said to have normal polarity.

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Mercury is 0.39 AU from the sun. What is its distance from the sun in kilometers?

qaws [65]

Answer:

0.39AU = 58344000 [km] or 58.500.000 [km]

Explanation:

This is a problem that consists simply in converting units:

AU = astronomic unit

$1 [AU] = 1.496*10^{8} [km]\\0.39 [AU] = x\\\\Therefore\\x = \frac{0.39*1.496*10^{8} }{1} \\x = 58344000[km]$

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3 years ago

A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.442 and t

fredd [130]

Answer:7.92 N

Explanation:

Given

mass of book $m=1.83\ kg$

coefficient of static friction $\mu _s=0.442$

coefficient of kinetic friction $\mu _k=0.240$

To move the book, one need to overcome the static friction

Static friction $F_s=\mu _sN$

$F_s=\mu _s\times 1.83\times 9.8$

$F_s=0.442\times 1.83\times 9.8$

$F_s=7.92\ N$

After overcoming the Static friction , Force needed to move the block is

$F_k=\mu _kN$

$F_k=0.240\times 1.83\times 9.8$

$F_k=4.30\ N$

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According to Newton's first law, an object in motion will stay in motion unless:

Nadusha1986 [10]

Answer: unless it's acted upon by an external force

Explanation: Newton first law of motion State that an object will continue in it state of rest or in motion, unless it is been acted upon by an external force

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