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  1. Astronomy is the study of the sun, moon, stars, planets, comets, gas, galaxies, gas, dust and...of evolution to determine how they formed, evolved, and died. Thus, theoretical and observational astronomy tend to blend together, as theoretical scientists use the information actually collected to create simulations...

    2 Answers · Science & Mathematics · 20/12/2013

  2. The neutrino (I presume that that's what you meant) has mass and is a lepton - in that it interacts via the weak force and therefore comes in 3 generations, one for the electron, mu, and tau. Because it has mass, and so it can contribute to...

    1 Answers · Science & Mathematics · 09/05/2011

  3. Looking down on the earth from the north pole, the earth would be seen to spin in a counter clockwise direction. Picture this and meld the image with knowledge that the sun rises in the east and sets in the west and it should lock in .The synodic period of the Moon is the time to...

    3 Answers · Science & Mathematics · 19/03/2008

  4. gas has a density of roughly .75Kg per liter not kg m-3so it's 60.6 x.75 so it weighs about 45Kg

    2 Answers · Science & Mathematics · 16/04/2012

  5. Sphere V = ⁴/₃πr³ = ⁴/₃π(10000)³ = 4.189e12 m³ mass = density x V = 4e17 kg/m³ x 4.189e12 m³ = 1.676e30 kg sun mass 1.9891e30 kg 1.676e30 kg x 1 solar mass / 1.9891e30 kg = 0.842 solar mass F = (6.674e-11)(1.676e30)(1) / (10000...

    1 Answers · Science & Mathematics · 02/04/2018

  6. Ek = ½mv² v = 30 000 m/s p = m/v m = pv m = p(4π/3 r³) Ek = (2π/3)pr³v²

    1 Answers · Science & Mathematics · 09/02/2009

  7. 1/0.123 = 8.1parsecs. Simple as that! __________________________________ If you want to know why, read on... Take a look at the link, where parallax and the formula are explained. The key formula is: Distance (in parsecs...

    1 Answers · Science & Mathematics · 28/01/2012

  8. Angular momentum: L = Iω Inertia for solid sphere: I = ²/₅MR² and using ω = v/R ==> L = 2MRv/5 Insert the values of Rigel, its mass, radius and eq. speed to calculate its angular...

    1 Answers · Science & Mathematics · 27/03/2018

  9. Are we talking about electromagnetic radiation coming from the outer space and detected at a point located at sea level? Not visible(not easily detectable): gamma rays, x-rays. Visible(detectable): ultraviolet, visible, infrared, radio. The absorption...

    2 Answers · Science & Mathematics · 19/11/2012

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