Recent content by Poppinkrey

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    Undergrad Force that the Earth exerts on the Moon

    Got it, thanks!
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    Undergrad Force that the Earth exerts on the Moon

    Let's say that the Moon has a mass of 7.4 x 10^22 kg. What's the force that the Earth, and the Sun exerts on the Moon?
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    Graduate Calculation of a planet's mass via wavelengths

    I believe this requires kepler's 3rd law (where the common focus is in the distant planet).
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    Graduate Calculation of a planet's mass via wavelengths

    I got to find an answer or a push to the right tracks on this question. Suppose a spacecraft is in a circular orbit about a distant planet. the spacecraft emits a continuous radio signal with a wavelength of 6m. The signal's wavelength varies between 5.99969m and 6.00031m; the period of...