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3 years ago

12

A rule or principle that describe the behavior of something in nature is a

1 answer:

Archy [21]3 years ago

5 0

Answer is: <span>scientific law.
</span>Scientific law <span>describe a range of </span>phenomena<span> as they appear in </span>nature<span> determined by </span>experiment. <span>Scientific laws imply a cause and effect between the observed elements in nature and must always apply under the same conditions.</span>

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Two satellites are in circular orbits around Earth. Satellite A has speed vA. Satellite B has an orbital radius nine times that

Pani-rosa [81]

Answer:

option B

Explanation:

given,

Satellite B has an orbital radius nine times that of satellite A.

R' = 9 R

now, orbital velocity of the satellite A

........(1)

now, orbital velocity of satellite B

from equation 1

hence, the correct answer is option B

8 0

3 years ago

A bicycle tire has a pressure of 7.00×105 N/m2 at a temperature of 18.0ºC and contains 2.00 L of gas. What will its pressure be

stepan [7]

Answer:

$p_2 = 664081 N/m^{2}$

Explanation:

from the ideal gas law we have

PV = mRT

$P = \rho RT$

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

HERE R is gas constant for dry air = 287 J K^{-1} kg^{-1}

$\rho = \frac{7.00 10^{5}}{287(18+273)}$

$\rho = 8.38 kg/m^{3}$

We know by ideal gas law

$\rho = \frac{m_1}{V_1}$

$m_1 = \rho V_1 = 8.38 *2*10^{-3}$

$m_1 = 0.0167 kg$

for m_2

$m_2 = \rho V_i - V_removed$

$m_2 = 8.38*(.002 - 10^{-4})$

$m_2 = 0.0159 kg$

WE KNOW

PV = mRT

V, R and T are constant therefore we have

P is directly proportional to mass

$\frac{p_2}{p_1}=\frac{m_2}{m_1}$

$p_2 = p_1 * \frac{m_2}{m_1}$

$p_2 =7*10^{5} * \frac {.0159}{0.0167}$

$p_2 = 664081 N/m^{2}$

8 0

3 years ago

Is this statement true or false? Electric currents flow easily through materials that are conductors and through materials that

Alex777 [14]

False because currents do not flow easily through insulators. If it only said conductors, then it would be true.

3 0

3 years ago

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What is the total resistance in this circuit?

saul85 [17]

Answer:B

Explanation:

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3 years ago

Is this a plant or animal cell????

Lubov Fominskaja [6]

This is an Animal Cell.

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4 years ago

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