Compared to ultraviolet waves, the frequency of infrared waves is
A) lower.
B) the same.
C) higher.
Answer: A
Physics & Space Science
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In ancient times permanent magnets were known to the Greeks. These magnets were chunks of iron ore now called magnetite. What is the older name for this material?
A. magnesia B. lodestone C. oersted D. compass E. None of these choices are correct.
Physics & Space Science
Compare the days, seasons, and years of Mars and Earth
What will be an ideal response?
Physics & Space Science
______________ is the largest known asteroid
Fill in the blank(s) with correct word
Physics & Space Science
An avalanche of ice and snow of mass 2500 kg slides a vertical distance of 160 m down a mountainside. If the temperature of the ice, snow, mountain, and surrounding air are all at 0°C, what is the change in entropy of the universe?
a. 14,000 J/K c. 1400 J/K b. 10,000 J/K d. 1100 J/K
Physics & Space Science