Man made satellites

M represented in the formula is the mass of...

M di dalam formula adalah jisim untuk...

• A

• B

Speed of Planet A at RS is faster than PQ

Planet A lebih laju di RS berbanding di PQ.

• True

  Betul

• False

  Salah

Which of the following shows the formula to calculate escape velocity of an object from the surface of the Earth?

Antara berikut yang manakah menunjukkan formula untuk mengira halaju lepas sesuatu objek dari permukaan Bumi Bumi?

• 
• 
• 
• 

Which of the following shows the correct way to get the value of r?

Yang manakah antara berikut menunjukkan cara untuk mendapatkan nilai r?

• R + h

• h

• R

• R - h

A satellite orbits the Earth with linear speed 3.87 x 10^3 ms-1. Calculate the radius of the orbit.

Sebuah satelit mengelilingi Bumi dengan laju linear 3.87 x 10^3 ms-1. Kira jejari orbit.

(G = 6.67 x 10-11 N m² kg^-2, M = 5.97 x 10²⁴ kg, R = 6.37 x 10⁶ m)

• 5.42 x 10^7 m

• 3.17 x 10^7 m

• 2.66 x 10^7 m

A satellite with mass 1200kg and a satellite with mass 1500kg have different minimum velocity that have to be reached before they are able to escape Earth's gravity.

Satelit dengan jisim 1200kg dan satelit dengan jisim 1500kg mempunyai halaju minimum yang berbeza untuk mengatasi graviti Bumi.

• True

  Betul

• False

  Salah

Calculate the linear speed of a satellite in an orbit 900 km above Earth’s surface. Given G = 6.67 x 10^-11 N m^2 kg^-2, radius of earth is 6370 km and mass of the earth is 5.97 x 10^24 kg.

• 1.05 x 10^4 m s^-1

• 2.97 x 10^4 m s^-1

• 9.40 x 10^5 m s^-1

• 7.40 x 10^3 m s^-1

Calculate the escape velocity of a satellite in an orbit 300 km above Earth’s surface. Given G = 6.67 x 10^-11 N m^2 kg^-2, radius of earth is 6370 km and mass of the earth is 5.97 x 10^24 kg.

• 7.73 km s^-1

• 10.9 km s^-1

• 36.4 km s^-1

• 244 km s^-1

Which of the following is true about non-geostationary satellites?

• Its orbital period around the earth is one day.

• It is at a height of (35000-36000) km above the equator of surface of the earth.

• Example of the satellites are GPS.

• It can be in an orbit of which is very close to the surface of the earther or very further away from the surface of the earth.

• Example of the satellites are communication satellites.

The name of the first man made satellite is ________ and was launched by _________.

• Vostok, Russia

• Sputnik 1, Russia

• Measat 1, Malaysia

• Sputnik 2, Russia