If a 78.2 kg kangaroo weighs 6742 N on the planet katar, calculate katar's radius

  about 7500 km

Explanation:

The mass of planet Katar is 7.27×10^25 kg. The force on the kangaroo is given by ...

  F = GmM/r^2

Solving for r, we have ...

  r = √(GmM/F) = √(6.67×10^-11 × 78.2 × 7.27×10^25 / 6742) ≈ √(5.62×10^13)

This is in meters, so the radius in km is about ...

  r ≈ 7500 km

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation

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