The density of air is 1.29 kg/m3. What is the mass of the air inside a room 4.0 m × 3.0 m × 2.0 m?
A) 0.32 kg
B) 3.1 kg
C) 31 kg
D) 1.9 kg
E) 19 kg
C
Physics & Space Science
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Based on current scientific evidence, what is the likelihood that life on Earth formed spontaneously from increasingly complex chemical reactions?
A) very likely B) certain C) impossible D) very unlikely
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A radiation detector measures radioactivity decay of a piece of radium by catching and counting alpha particles it emits. Making this measurement affects the
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Describe two ways of detecting extrasolar planets
What will be an ideal response?
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