Recent content by cherioslover

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    Final velocities of 0.3 kg gliders in elastic collision

    Homework Statement Two 0.3 Kg gliders collide elastically on a frictionless track. Prior to the collision , their total kinetic energy is 0.52 J and their total momentum is 0.12 Kg m/s [left] along the track. Calculate the final velocities of the gliders. Homework Equations m1vi1 + m2vi2...
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    High School Why is a charged particle only affected by a magnetic field when moving?

    Just doing some homework with magnetic fields and was just wondering, why is a charged particle affected by a magnetic field only when its in motion? Physics teacher didn't know so, just wondering if any of you do.
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    Finding missing mass in rotating Andromeda galaxy

    Homework Statement The andromeda galaxy has a velocity of 250 km/s as it rotates. The observed mass is 1 x 10^42 kg. If the galaxy is roughly a circle with a diameter of 66,00 light years how much mass is not accounted for visibly? Homework Equations Fc=mv^2/r and Fg=Gm1m2/r^2 The...
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    Missing mass in rotating Andromeda galaxy

    Homework Statement The andromeda galaxy has a velocity of 250 km/s as it rotates. The observed mass is 1 x 10^42 kg. If the galaxy is roughly a circle with a diameter of 66,00 light years how much mass is not accounted for visibly? Homework Equations Fc=mv^2/R Fg=Gm1m2/R^2 The...
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