In the bohr model of the hydrogen atom, the electron moves in a circular orbit of radius 5.3× 10 −11 m with speed 2.2× 10 6 m/s . part a according to this model, what is the magnetic field at the center of a hydrogen atom due to the motion of the electron? hint: determine the average current of the orbiting electron. express your answer in tesla. b b = nothing t submitrequest answer return to assignment provide feedback

Which of the following correctly describes the early view of catastrophism?

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?