Which star in the diagram is most like the sun?
D
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At the time of the vernal equinox
a) the Sun is above the equator moving southward. b) the number of hours of daylight exceeds the number of hours of darkness. c) summer begins for the Northern Hemisphere. d) the Sun is above the equator moving northward.
A camera lens that covers the film with a wider field of view than that of the eye and through which objects appear smaller is referred to as a
A) normal lens. B) telephoto lens. C) wide-angle lens. D) zoom lens. E) digital lens.
Describe how Eratosthenes first measured the size of Earth over 2000 years ago
What will be an ideal response?
When a particular resistor is connected to a source of sinusoidally varying emf with constant amplitude and a frequency of 60.0 Hz, the rms current is 3.00 A. What is the rms current if the source frequency is doubled?
1.12.0 A 2.6.00 A 3.4.24 A 4.3.00 A 5.1.50 A