DP Physics (last assessment 2024)

Test builder »

Question 19N.2.HL.TZ0.a(i)

Select a Test
Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.2.HL.TZ0.a(i)
Level HL Paper 2 Time zone TZ0
Command term Show that Question number a(i) Adapted from N/A
a(i).
[Maximum mark: 1]
19N.2.HL.TZ0.a(i)

In a classical model of the singly-ionized helium atom, a single electron orbits the nucleus in a circular orbit of radius r.

Show that the speed v of the electron with mass m, is given by v=2ke2mr.

[1]

Markscheme

equating centripetal to electrical force 2ke2r2=mv2r to get result ✔

Syllabus sections