A tau lepton (mass 1.777 GeV/c2) decays with a lifetime of 300 fs in its rest frame. In the laboratory, a tau lepton is produced with an energy of 50 GeV. How far, on average, does it travel before decaying?

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

c) power lifting, will be your answer.

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deku ❤

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.