H.W: In the Boher model of the hydrogen atom an electron moves at2.19 10ʻm/s in an orbit of radius 5.29*10" centered on a proton. (a)what isthe centripetal force on the electron? (b)what is the number of revolutionsmade each second?Ans. (a)9.06 10"ms (b= 6.58 • 1015 1/sH.W: A ball is thrown with an initial speed voat an angle 0 below thehorizontal from rooftop 44m above the ground. It lands 2sec later at a point32m from the base of the building. Find v, and eAns. 0 = -37.32v, = 20. 1m/s%3!

We know that centripetal force is given by Fc=mv2/r....(1)

H.W: In the Boher model of the hydrogen atom an electron moves at 2.19 10'm/s in an orbit of radius 5.29 10" centered on a proton. (a)what is the centripetal force on the electron? (b)jwhat is the number of revolutions made each second?

H.W: In the Boher model of the hydrogen atom an electron moves at 2.19 10'm/s in an orbit of radius 5.29 10" centered on a proton. (a)what is the centripetal force on the electron? (b)jwhat is the number of revolutions made each second?

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Question

H.W: In the Boher model of the hydrogen atom an electron moves at
2.19 10ʻm/s in an orbit of radius 5.29*10" centered on a proton. (a)what is
the centripetal force on the electron? (b)what is the number of revolutions
made each second?
Ans. (a)9.06 10"ms (b= 6.58 • 1015 1/s
H.W: A ball is thrown with an initial speed voat an angle 0 below the
horizontal from rooftop 44m above the ground. It lands 2sec later at a point
32m from the base of the building. Find v, and e
Ans. 0 = -37.32v, = 20. 1m/s
%3!

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