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Chapter 1: Q40P (page 11)
Using conversions and data in the chapter, determine the number of hydrogen atoms required to obtainof hydrogen. A hydrogen atom has a mass of .
The number of hydrogen atoms required to obtainof hydrogen is
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Suppose that, while lying on a beach near the equator watching the Sunset over a calm ocean, you start a stopwatch just as the top of the Sun disappears. You then stand, elevating your eyes by a height H = 1.70 m, and stop the watch when the top of the Sun again disappears. If the elapsed time is t = 11.1 s, what is the radius r of Earth?
In the United States, a doll house has the scale of of a real house (that is, each length of the doll house is that of the real house) and a miniature house (a doll house to fit within a doll house) has the scale of of a real house. Suppose a real house (Fig. 1-7) has a front length of 20 m, a depth of 12 m, a height of 6.0 m, and a standard sloped roof (vertical triangular faces on the ends) of height 3.0 m. In cubic meters, what are the volumes of the corresponding (a) doll house and (b) miniature house?
Figure 1-7 Problem 32
Question: For about 10 years after the French Revolution, the French government attempted to base measures of time on multiples of ten: One week consisted of 10 days, one day consisted of 10 hours, one hour consisted of 100 minutes, and one minute consisted of 100 seconds. What are the ratios of (a) the French decimal week to the standard week and (b) the French decimal second to the standard second?
A forceis applied to a bead as the bead is moved along a straight wire through displacement. The magnitude ofrole="math" localid="1657167569087" is set at a certain value, but theanglebetween and the bead’s displacement can be chosen. Figuregives the workdone byon the bead for a range of role="math" localid="1657166842505" values;role="math" localid="1657167794268" . How much work is done byrole="math" localid="1657167547441" if is (a) and (b)?
Two waves,
travel along a stretched string. (a) Plot the resultant wave as a function of tfor,is the wavelength. The graphs should extend from t = 0to a little over one period. (b) The resultant wave is the superposition of a standing wave and a traveling wave. In which direction does the traveling wave move? (c) How can you change the original waves so the resultant wave is the superposition of standing and traveling waves with the same amplitudes as before but with the traveling wave moving in the opposite direction? Next, use your graphs to find the place at which the oscillation amplitude is (d) maximum and (e) minimum. (f) How is the maximum amplitude related to the amplitudes of the original two waves? (g) How is the minimum amplitude related to the amplitudes of the original two waves?
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