The Quantum Tunneling of Particles through Potential Barriers
A tunnel diode and a resonant-tunneling diode both utilize the same physics principle of quantum tunneling. In what important way are they different?
tran (mmt2449) – Homework 07 – yao – (56695) 1 This print-out should have 29 questions. Solution: The total mass of the system is Multiple-choice questions may continue on the sum of all point masses the next column or page – ﬁnd all choices M = 9m before answering. = 9(9 kg) 001 10.0 points = 81 kg. Assume: The small objects are point parti- Angular momentum of the system is con- cles. served, so The system of nine small 9 kg objects is rotating at an angular speed of 6 rev/s. The L 2 L 1 objects are connected by light, ﬂexible spokes M r ω =2M r ω 2 1 that can be lengthened or shortened. 2 2 1 r2ω 2 r ω1 1 y 2 ω = r1 ω 2 r2 1 9 kg 2 9 kg (7 m) 2 6 = 2(6 rev/s)