During a medical evaluation the doctor can

Determine the maximum r-value of the polar equation r =3+3 cos 0

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?