# Yahoo Web Search

1. ### Surface area of Earth?

The radius of earth is 6371 km The surface area is : 4pi r^2 = 4 * 3.14 * 6,371^2 = 509 805 891 km ...

5 Answers · Science & Mathematics · 03/06/2012

2. ### If a 250 kg motorcycle completes a 13.7 m radius turn at 95.0 km /h, what is the centripetal force on the moto?

... force = mass x centripetal acceleration (http://en. wikipedia .org/wiki/Centripetal_force) F = ma, where centripetal... = 250 x (26.39)2 / 13.7 (have converted km /h to m/s to maintain same unit with radius, to give answer in...

1 Answers · Science & Mathematics · 22/05/2013

3. ### What is the density of air at 100 km if the atmosphere has a scale-height of 8 km ?

...;/QUOTE> (source: https://en. wikipedia .org/wiki/Scale_height ) Therefore, all you... to find out how many times is 100 km larger than 8 km for you to find out how much ...

1 Answers · Science & Mathematics · 01/11/2017

4. ### If the angular size of Venus is 52'' when the planet is 48000000 km from Earth, what's Venus's diameter?

... = X · d / 206,265 Here is the source: http://en. wikipedia .org/wiki/Small-angle_approximation

3 Answers · Science & Mathematics · 15/07/2012

5. ### Jupiter's Moon Io Distance From Moon?

Periapsis 420,000 km Apoapsis 423,400 km Mean orbit radius 421,700 km http://en. wikipedia .org/wiki/Io_%28moon%29

1 Answers · Science & Mathematics · 16/05/2010

6. ### ok how long would it take to get to Mars travelling at the speed of sound?

...get you into low earth orbit Just to answer the question though, about 60,000,000 km /(1129 ft/s) = 5.5ish years, the distance between the two varies, I...

4 Answers · Science & Mathematics · 31/05/2008

7. ### Find the centre of gravity of the Earth-Moon system, in km ?

It's within the Earth's interior. It's why the Earth wobbles. http://en. wikipedia .org/wiki/Barycentric_coordinates_%28astronomy%29

3 Answers · Science & Mathematics · 17/06/2012

8. ### Consider two points at the same longitude on the Earth's surface but 400 km apart.?

...to get the first ever accurate measure of the size of the Earth. use Wikipedia to read up on him and learn the full details I am too...

1 Answers · Science & Mathematics · 25/09/2014

9. ### Is Canada larger than the whole European continent?

no europe is bigger europe 10,180,000 sq km canada 9,984,670 sq km USA 9,629,091 sq km http://en. wikipedia .org/wiki/List_of_countries_and_outlying_territories_by_total_area#Countries_by_total_area

2 Answers · Science & Mathematics · 10/12/2011

10. ### Satellites:LOE .. question?

Wikipedia defines Low Earth Orbit as between 160 - 2000 km (100 - 1240 miles) above the Earth's surface. According to...

1 Answers · Science & Mathematics · 22/02/2009