Homework 01

# Homework 01 - Homework 1 2 We work from the definition of...

This preview shows pages 1–3. Sign up to view the full content.

Homework 1 2. We work from the definition of the frequency and the wavelength to give, for the electron, Now, the phase and group velocities are The proton is 1831 times heavier than the electron, and this affects the momentum and therefore the de Broglie wavelength as f = 100 1.6 × 10 19 6.625 × 10 34 = 2.42 × 10 16 Hz λ = 6.625 × 10 34 1.673 × 10 27 1.6 × 10 17 = 2.85 × 10 12 m and the velocities are now v ϕ = ω k = 2 π f 2 / = f = 6.91 × 10 4 m / s v gr = k m = p m = 2 E m = 1.38 × 10 5 m / s 3. We work with

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Hence, . 4. If the electron has an energy of 100 eV, then the average momentum is p = mE = 5.4 × 10 24 . The elapsed time is given as t = 2 m σ 2 = 2 m Δ x ( )
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

Homework 01 - Homework 1 2 We work from the definition of...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online