The simplest member of the aromatic hydrocarbons is named ______________
Fill in the blank(s) with correct word
benzene
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Linear momentum has units of ______________
Fill in the blank(s) with correct word
This figure shows the Cepheid period-luminosity relation. Suppose that a Cepheid with a period of 30 days has the same apparent brightness as a nearby star with a luminosity identical to our Sun. How many times farther away is the Cepheid? (Hint: First use the graph to find the Cepheid's luminosity, then apply the inverse square law for light.)
A) The Cepheid is 10 times farther away than the nearby star. B) The Cepheid is 100 times farther away than the nearby star. C) The Cepheid is 10,000 times farther away than the nearby star. D) The Cepheid is actually 10 times closer than the nearby star.
A(n) ______________ is an elementary particle with a charge of –1.6 × 10^-19 C
a. electron b. neutron c. proton d. atom
What is the sum of 2.67 + 1.976 + 2.1 expressed to the correct number of significant figures?
A) 6.7 B) 6.75 C) 6.746 D) 6.7460