Ask Experts Questions for FREE Help !
Ask
    srw1983's Avatar
    srw1983 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 19, 2009, 06:30 AM
    General Physics
    In a Bohr picture of the hydrogen atom an electron is thought to travel in a circle of approximate radius of 5*10-11m about a proton as a fixed center. (a) How fast is the electron moving? (b)How large a magnetic field would be neede to cause the electron to travel in a circle of this radius? Hint in part a the coulomb force supplies the centripetal force
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Oct 19, 2009, 10:33 AM

    (a) Find the electrostatic force on the electron by the nucleus, using . Then, use the formula of centripetal force, . You must have been given the mass of an electron. Both forces are equal, so, solve for v.

    (b) Sorry, I don't know how to do the second part :o
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

The reversing entry in the general journal and posting it to the general ledger [ 4 Answers ]

Hi I need to know How I can post reversing etry in to the general ledger ? For example if I have The business last paid a water bill in May, which was for 3 months of water expense up to the end of April. The additional accrual entry for water expense for the last two months is $2,290. And I...

General physics, vectors [ 2 Answers ]

Suppose a bear travels 2 km/hr due east for 30 minutes, 4km/ hr northeast for 15 minutes then 6 km/hr due west for 15 minutes. a) what distance did the bear travel during this trip? b) what was the bear's average speed during the trip? c) at the end of the trip, what displacement (magnitude and...

General Physics Questions [ 1 Answers ]

The gravitational interaction alone governs the motions of the planets around the sun. Why are the other fundamental interactions not significant in planetary motion? No particle of fractional charge has yet been observed. If none is found in the future either, does this necessarily mean...

General physics 2 [ 3 Answers ]

A car moving at 35 m/s approaches a stationary whistle that emits a 220 Hz sound. The speed of sound is 343 m/s. What is the speed of the sound relative to the driver of the car?

General Physics [ 2 Answers ]

These are the problems I couldn't find answers for. So pleas help me if you can. Thank you! 1) Which of these statements is true? a) Molecules form atoms that in turn determine chemical properties of a substance. b) Molecules are the smallest subdivision of matter that still...

View more questions Search