Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 1, Problem 70P
(a)
To determine
To find: The number of electrons required in each cubic meter.
(b)
To determine
To find: The number of protons required in each cubic meter.
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Helpful information: (1) An alpha particle is a helium nucleus, (2)
e = 1.6 × 10-¹⁹ C, (3) k = 9.0 × 10⁹ Nm² C-2, (4) 1nm = 1 × 10-⁹ m
1-An alpha particle lies on the x-axis, a distance of 1.0 nanometer from a
proton (in this set-up, the alpha particle is at the origin while the proton is in the
positive direction). Which of the following choices below represents the
magnitude of the electric force on the alpha particle?
(a) 2.3 × 10-10 N
(b) 4.6 × 10-¹0 N
(c) 2.3 × 10-19 N
(d) 4.6 × 10-19 N
eplacing the voltage sou
the following inst
choices below
time != 1.00 37
instantaneous current
The geometry of spacetime in the Universe on large scales is determined by the mean energy density of the matter in the Universe, ρ. The critical density of the Universe is denoted by ρ0 and can be used to define the parameter Ω0 = ρ/ρ0. Describe the geometry of space when: (i) Ω0 < 1; (ii) Ω0 = 1; (iii) Ω0 > 1. Explain how measurements of the angular sizes of the hot- and cold-spots in the CMB projected on the sky can inform us about the geometry of spacetime in our Universe. What do measurements of these angular sizes by the WMAP and PLANCK satellites tell us about the value of Ω0?
Assume that the protons in a hot ball of protons each have a kinetic energy equal to kT, where k is the Boltzmann constant and T is the absolute temperature. If T = 1 * 10^7 K, what (approximately) is the least separation any two protons can have?
Chapter 1 Solutions
Physics for Scientists and Engineers
Ch. 1 - Prob. 1PCh. 1 - Prob. 2PCh. 1 - Prob. 3PCh. 1 - Prob. 4PCh. 1 - Prob. 5PCh. 1 - Prob. 6PCh. 1 - Prob. 7PCh. 1 - Prob. 8PCh. 1 - Prob. 9PCh. 1 - Prob. 10P
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