A negative magnification for a mirror means
A) the image is inverted, and the mirror is concave.
B) the image is inverted, and the mirror is convex.
C) the image is inverted, and the mirror may be concave or convex.
D) the image is upright, and the mirror may be concave or convex.
E) the image is upright, and the mirror is convex.
A
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The Copernican model of the solar system has the planets orbit the sun along elliptical paths
Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. The earth’s equilibrium temperature depends on its radius
On an H-R diagram, stellar masses
A) can be determined for main-sequence stars but not for other types of stars. B) are greatest in the lower left and least in the upper right. C) decrease from upper left to lower right. D) are impossible to determine.
Two instruments produce a beat frequency of 5 Hz. If one has a frequency of 264 Hz, what could be the frequency of the other instrument?
A. 269 Hz B. 254 Hz C. 264 Hz D. 5 Hz E. 274 Hz