In a particle accelerator, protons are fired at a stationary target and collide elastically with the nuclei of the atoms in the target. In one such experiment, a beam of protons is fired with a speed of 2.10 × 107 m/s
The protons that undergo a collision rebound with a speed of 1.68 × 107 m/s. What is the mass of the nuclei that the protons are colliding against? A) 6.00 proton masses
B) 7.00 proton masses
C) 8.00 proton masses
D) 9.00 proton masses
E) 10.0 proton masses
D
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In a two-slit experiment, monochromatic coherent light of wavelength 600 nm passes through a pair of slits separated by 2.20 x m. At what angle away from the centerline does the first bright fringe occur?
A) 1.56° B) 2.22° C) 3.12° D) 4.70° E) 6.24°
Energy Levels: What is the wavelength of the photon emitted when an electron in a hydrogen atom which is in the initial state n = 8 jumps to the final state n = 2? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A. 205 nm B. 104 nm C. 389 nm D. 486 nm E. 610 nm
The shifting of large blocks of Earth's surface is usually referred to today as what?
A. continental drift B. plate tectonics C. the Coriolis effect D. the dynamo effect
The superposition of two waves
?
and
?
at the location x = 0 in space results in
A. beats at a beat frequency of 3 Hz. B. a pure tone at a frequency of 153 Hz. C. a pure tone at a frequency of 156 Hz. D. beats at a beat frequency of 6 Hz. E. beats at a frequency of 156 Hz.