What is the relativistic momentum of a proton traveling at 0.97c?
a. 2.00E–18 kg·m/s
b. 2.81E–18 kg·m/s
c. 2.06E–18 kg·m/s
d. 2.89E–18 kg·m/s
a
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A mixture consists of 70 g of ice and 60 g of liquid water, both at 0°C. (The latent heat of fusion of water is 80 cal/g and the specific heat capacity of water is 1.0 cal/g C°.) The amount of heat that must be added to melt all of the ice is about
A. 4000 cal. B. 5600 cal. C. 32,400 cal. D. 21,600 cal.
Distinguish between ac and dc. When you plug a light bulb into a wall outlet, where is the source of electrons?
What will be an ideal response?
If the work function of a metal surface is 2.20 eV, what frequency of incident light would give a maximum kinetic energy of 0.25 eV to the photoelectrons ejected from this surface? (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A) 2.50 × 1014 Hz B) 3.53 × 1014 Hz C) 5.92 × 1014 Hz D) 2.05 × 1014 Hz E) 1.02 × 1014 Hz
Harmonic frequencies are:
a. mathematically unrelated to the fundamental frequency. b. all the same. c. 2, 4, 8, 16, ..., etc. times the lowest frequency. d. whole-number multiples of the fundamental frequency. e. squares of the fundamental frequency.