Identify (name) the 12 leptons:

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electron, muon, tauon, electron-neutrino, muon-neutrino, and tauon-neutrino; and their 6 antiparticles

Physics & Space Science

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What does a waning crescent moon mean?

a. The changing Moon between full moon and third quarter b. The changing Moon between third quarter and new moon c. The changing Moon between first quarter and full moon d. The changing Moon between new moon and first quarter e. The changing Moon between first and third quarters

Physics & Space Science

Consider a beam of free particles with a certain speed . If we double this speed, what happens to the beam’s de Broglie wavelength?

A. It increases by a factor of 2. B. It increases by a factor of 21/2. C. It remains the same. D. It decreases by a factor of 21/2. E. It decreases by a factor of 2.

Physics & Space Science

List the two major regions of the near side of the Moon, as seen with the naked eye

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Physics & Space Science

An electron is accelerated from rest through a potential difference of 50.0 kV. What is the speed of the electron? (c = 3.00 × 108 m/s, e = 1.60 × 10-19 C, mel = 9.11 × 10-31 kg)

A) 1.24 × 108 m/s B) 1.33 × 108 m/s C) 3.24 × 108 m/s D) 3.33 × 108 m/s E) 4.12 × 108 m/s

Physics & Space Science