The following graph shows multiple transit events recorded while observing a star. The colored arrows indicate transits caused by three different planets. Rank the orbital periods of these planets, from shortest to longest.
What will be an ideal response?
Shortest period
Red planet
Blue planet
Purple planet
Longest period
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An acoustical engineer in designing a music hall is concerned with
A) echoes. B) reflection. C) reverberations. D) all of the above E) none of the above
A pair of parallel plates, forming a capacitor, are charged. The plates are pulled apart to quintuple the original separation, the charges on the plates remaining the same. What is the ratio of the final energy stored to the original energy stored?
a. 25 b. 5 c. 1 d. 1/5 e. 1/25
Chromatic aberration can be corrected by combining two or more lenses to form a compound lens
Indicate whether the statement is true or false
What are the primary components of all rock
forming minerals? a) oxygen and nitrogen b) hydrogen and helium c) oxygen and silicon d) iron and nickel