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)what is the number of revolutions made each second? Ans. (a)9.06 10"m/s (b= 6.58 . 1015 1/s

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)what is the number of revolutions made each second? Ans. (a)9.06 10"m/s (b= 6.58 . 1015 1/s

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter1: Getting Started

Section: Chapter Questions

Problem 21PQ

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Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

Question

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)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 e 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 0
Ans. 8 = -37.32v, = 20. 1m/s

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