Per newly education question and answer asked over students to assert what they believe is the most important element for a student to do in order to get success. The one that response stood out from the rest was practice. Successful people are generally not born successful; they become successful by just hard work and determination. This is how you can reach your goals. as follows some question and answer examples that you may utilise to enrich your knowledge and gain insight that will help you to keep up your school studies.

## Question:

Suppose NASA wants a satellite to revolve around Earth 5 times a day. What should be the radius of its orbit if we neglect the presence of the Moon? (G=6.67*10^ -11 N*m^2/kg^2, Mearth=5.97*10^24 kg). Answer is 1.44*10^7 m

## Answer:

The radius of its orbit will be “**1.44 × 10⁷ m**“.

__Mass and radius__

According to the question,

**Satellite resolve **a day = 5 times

**Mass** of earth, = 5.97 × 10²⁴ kg

**G** = 6.67 × 10⁻¹¹ Nm²/kg²

Now,

The **time taken** will be:

T =

= 4.8 hours

By converting it into seconds, we get

= 4.8 × 3600

= 17280 sec

We know the formula,

→ T = 2π ×

By substituting the above values, we get

17280 = 2π ×

r = 1.44 × 10⁷ m

Thus the above approach is correct.

Find out more information about **Mass** here:

They could hopefully guide the student deal with the question by using the questions and answer examples. You can potentially then have a discussion with your classmate and continue the school learning by studying the question with one another.