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...
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.
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...
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...