{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

pc1144_ay0405_sem2

# pc1144_ay0405_sem2 - 0.8c Moreover the inertial reference...

This preview shows page 1. Sign up to view the full content.

Answer to PC1144 AY0405 Paper Part I 1(a) Refer textbook 1(b) Photons of 10 different energies can be emitted. 2 Hint: Approach from conservation of momentum and energy 3(a)(b) 3(c) The difference between the energy levels of the harmonic oscillator is hf . This is in agreement with blackbody radiation, where each photon has an energy of hf . 4(a) J E 22 min 10 27 . 5 4(b) Smaller, because the average lifetime of an energy state in H atom is larger (10 -8 s) 5 For 1 particle, strangeness 3 , charge 1 Part II 6(a)(i) ' 0 ' t t x 6(a)(ii) L L t p 0 6(b)(i) 2 years (ii) 4 years (iii) 2.4 ly 6(b)(iv) The captain is not in an inertial frame when he accelerates to and decelerates from
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 0.8c. Moreover, the inertial reference frames of the captain and his wife are approximations, because there are accelerating effects such as gravitational attraction and rotating frames. 6(c) 4 . 6  t years 7(a) Hint: Substitute the solution to the Schrodinger equation 7(b) Hint: KE E n  7(c) The particle cannot be found in the centre of the box when n is even. This is because the wavefunction is a node at the center for even n . 7(d) 4 8(a) 1.1 MeV (b) 23.8 MeV (c) 24.7 MeV National University of Singapore Physics Society 2009...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online