Consider a free particle with v(2) = 0, e > 0 with mass m in a periodic box with length l: (x, t) = 4(1) f(t) = aeikr + be-ikret (1) (a) find k in terms of e and l. (b) the wave function and its derivative must be continuous. since the point x = 0 is identified with x = l, write down the rsulting conditions and calculate the allowed energy levels.

i think it's 35 meters

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle

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.