Thin Lenses: A statue that is 10.4 cm tall is placed 4.8 cm in front of a concave lens. The image is 4.0 cm from the lens. How tall is the image?
A. 13 cm
B. 8.7 cm
C. 5.4 cm
D. 1.8 cm
Answer: B
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What are the dark regions that give the Sun's photosphere a mottled appearance?
a. CMEs b. sunspots c. spicules d. granules e. flares
How is light different from sound?
A. Sound requires a medium to move through; light does not. B. Light can be treated as a wave; sound cannot. C. Sound of any frequency can be heard; only visible light can be seen. D. Light can be reflected from a surface; sound cannot.
Over time, the star-gas-star cycle leads the gas in the Milky Way to
A) have a greater abundance of heavy elements. B) have a lower abundance of heavy elements. C) become denser and have a greater abundance of heavy elements. D) become denser and hotter.
To make an uncharged object have a negative charge we must:
A) add some atoms B) remove some atoms C) add some electrons D) remove some electrons E) write down a negative sign