What part of the electromagnetic spectrum has the longest wavelength?
A. Radio waves
B. X-rays
C. Visible light
D. Gamma rays
Answer: A. Radio waves
Physics & Space Science
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The metric prefix that means one million (1,000,000) is
a. centi-. b. mega-. c. milli-. d. nano-.
Physics & Space Science
Water with a density of 1,000 
flows through a 2.00 cm diameter pipe with a velocity of 2.40 m/s. What is the volume flow rate?
A. 
B. 
C. 
D. 
E. 
Physics & Space Science
Mars may have been more Earth-like in the past because
A) its atmosphere was thicker and warmer B) it was rotating more rapidly C) the Sun was dimmer, putting out less solar radiation D) it was not as close to the Sun
Physics & Space Science
How much heat is required to melt 5.0 kg of ice at 0°C to water at 0°C?
Physics & Space Science