A plot of the continuous spectra of five different stars is shown in Figure 6-1. Based on these spectra, which of the stars is the hottest?
A
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A material is _________if it fractures without plastic strain.
Fill in the blank(s) with the appropriate word(s).
Parallel-Plate Capacitor: An ideal air-filled parallel plate capacitor with plate a separation of 4.0 cm has a plate area of 0.040 m2. What is the capacitance of this capacitor with air between these plates? (?0 = 8.85 × 10-12 C2/N ? m2)
A. 89 pF B. 8.9 pF C. 0.89 pF D. 8.9 µF E. 8.9 nF
From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 486.1 nanometers (nm). The spectrum of a particular star shows the same hydrogen line appearing at a wavelength of 485.9 nm
What can we conclude? A) The star is moving toward us. B) The star is moving away from us. C) The star is getting hotter. D) The star is getting colder. E) The "star" actually is a planet.
What is the maximum radiation pressure exerted by sunlight in space (S = 1350 W/m2) on a flat black surface?
a. 2.25 × 10^?5 Pa b. 0.06 Pa c. 7 × 10^?4 Pa d. 4.5 × 10^?6 Pa e. 9.0 × 10^?6 Pa