Recent content by EvaSindelarova

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    Earth orbiting around sun - finding speed with known mass and radius

    Ok, I get it now, I just divide circumference (2∏r) by period (365 days, just in seconds). Thank you both)
  2. E

    Earth orbiting around sun - finding speed with known mass and radius

    Hi, the problem is stated as following: The Earth (mass=5.98×1024 kg) rotates around the sun in an orbit that is approximately circular, with a radius of 1.5×1011 m. Find the orbital speed of the Earth around the sun. [itеx]F=mv/r2[/itеx] I get that I need to use this equation but I'm...