Calculate the wavelength (in nanometers) of a H atom (mass = 1.674 × 10−27 kg) moving at 3.75 × 102 cm/s.?
回答 (1)
2017-11-21 8:11 pm
Planck constant, h = 6.626 × 10⁻³⁴ J s
Mass, m = 1.674 × 10⁻²⁷ kg
Velocity, v = 3.75 × 10² cm/s = 3.75 m/s
Wavelength, λ = h/(mv) = (6.626 × 10⁻³⁴) / [(1.674 × 10⁻²⁷) × 3.75] = 1.06 × 10⁻⁷ m = 106 nm
Mass, m = 1.674 × 10⁻²⁷ kg
Velocity, v = 3.75 × 10² cm/s = 3.75 m/s
Wavelength, λ = h/(mv) = (6.626 × 10⁻³⁴) / [(1.674 × 10⁻²⁷) × 3.75] = 1.06 × 10⁻⁷ m = 106 nm
收錄日期: 2021-04-18 17:58:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20171121045501AAX8Mne