An atom is placed in a uniform magnetic induction B such that normal to that plane of the electron’s orbit makes an angle of 30o with the magnetic induction. The torque acting on the orbiting electron is

Explain the doppler effect in terms of frequency, wavelength, and speed.

Describe the function of the endomembrane system? what organelles are involved?

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •