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AfilCa [17]
3 years ago
13

4. A 1,750 kg weather satellite moves in a circular orbit with a gravitational

Chemistry
1 answer:
Zolol [24]3 years ago
7 0

Explanation:

It is known that the value of free fall acceleration is g = 6.44 m/s^{2}. And, the value of radius of Earth is 6.4 \times 10^{6} m.

Let us assume that height of the satellite is h.

It is known that,

             g = \frac{GM}{r^{2}}        

where,   r = (R + h)

Hence,  

              r = \sqrt{\frac{GM}{g}}

              r = \sqrt{\frac{6.67 \times 10^{-11} \times 5.98 \times 10^{24}}{6.44 m/s}}

                = 7.9 \times 10^{6} m

Now, formula for height of satellite above the Earth's surface is as follows.

            h = r - R

               = 7.9 \times 10^{6} - 6.4 \times 10^{6}

               = 1.5 \times 10^{6} m

Thus, we can conclude that the satellite is 1.5 \times 10^{6} m high above Earth's surface.

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For the reaction A(g)
zubka84 [21]

Answer:

Yes

Explanation:

By definition, the equilibrium constanct, Kc, for the reaction A ⇒ 2B is

= [A]^1 / [B]^2

Substitute [A] = 4 and [B] = 2 in the equation,

[A]^1 / [B]^2

= 4^1 / 2^2

= 1

= Kc

So yes the reaction is at equilibrium.

6 0
2 years ago
Identify the property of the matter described below.
ZanzabumX [31]

Answer: C.

Explanation: Alcohol floats on oil and water sinks in oil. Water, alcohol, and oil layer well because of their densities, but also because the oil layer does not dissolve in either liquid. The oil keeps the water and alcohol separated so that they do not dissolve in one another. ... Water sinks because it is more dense than oil.

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3 years ago
Explain the difference between qualitative and quantitative properties.
SVETLANKA909090 [29]
Qualitative properties are properties that are observed and can generally not be measured with a numerical result. They are contrasted to quantitative properties which have numerical characteristics.
3 0
2 years ago
How many significant figures are in the following number? 5.67 x 106<br> 3<br> 4<br> 5<br> 6
mixas84 [53]
3 these are 5,6&7 are the significant
6 0
3 years ago
The pressure of a sample of helium is 1.556 atm in a 268.5 mL container. If the container is compressed to 112.4 mL without chan
Rainbow [258]

Answer:

a.  3.72 [atm]

Explanation:

For a gas at constant temperature, (with no change in number of molecules of the gas), we can apply Boyle's Law:  P_1V_1=P_2V_2

(1.556[atm])(268.5[mL])=P_2(112.4[mL])

\dfrac{(1.556[atm])(268.5[mL\!\!\!\!\!\!\!\!{--}])}{112.4[mL \!\!\!\!\!\!\!\!{--}]}=\dfrac{P_2(112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----})}{112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----}}

3.716957[atm]=P_2

It seems like the answer should have 4 significant figures since all of the other quantities have 4 significant figures, but the closest answer choice of those provided is a.  3.72

3 0
2 years ago
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