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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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Describe all lab equipment which would be required if you wanted to heat a chemical to 1500ºC.
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4 years ago
If two students in a lab are asked to calculate the density of a block with a mass of 31.0 g; they are not told how many digits
Arada [10]

We can see here that the both measurements are accurate. This is the true because the both values are in the correct number of significant figures.

<h3>What is density?</h3>

The term density has to do with the ratio of the mass to the density of the object. We know that the accuracy of a measurement has a lot to do with the number of significant figures in the measurement. In this case, we are told that two students in a lab are asked to calculate the density of a block with a mass of 31.0 g; they are not told how many digits to round their measurements. Student A finds length to be 2 cm width to be 4 cm and height 8 cm. Student B finds the length to be 2.65 cm, width to be 4.20 cm, and height to be 8.35 cm.

For the first student, the density is obtained as;

Density = mass/ volume

= 31.0 g/ 2 cm * 4 cm *  8 cm

= 0.5 g/cm^3

For the second student;

Density = mass/ volume

= 31.0 g/2.65 cm * 4.20 cm * 8.35 cm

= 0.33 g/cm^3

Learn more about density:brainly.com/question/15164682

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3 0
2 years ago
Help Please!!
Ivahew [28]

The first answer would be:

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I believe the second answer would be:

The age of earth. ( I say this because geological time is used to describe timing and the relationship of events in earths history)

I’m not sure about number 3 but I hope this was somewhat useful!!

7 0
3 years ago
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