Under what conditions will prebiotic molecules NOT be manufactured in Miller—Urey experiments?
A) if ammonia (NH3 ) is present in the flask
B) if methane (CH4 ) is present in the flask
C) if oxygen (O2 ) is present in the flask
D) if carbon dioxide (CO2 ) is present in the flask
C
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When a 50-mF capacitor is attached to an AC source, its capacitive reactance is 60 W. If instead a 200-mF capacitor is attached to the same source, what will be its capacitive reactance?
a. 80 W c. 30 W b. 15 W d. 120 W
The position of a particle moving along the x axis is given by x = (21 + 22t - 6.0t2)m, where t is in s. What is the average velocity during the time interval t = 1.0 s to t = 3.0 s?
a. -6.0 m/s b. -4.0 m/s c. -2.0 m/s d. -8.0 m/s e. 8.0 m/s
Oceans absorb much of the incident solar radiation
What will be an ideal response?
Why should photons emitted by a hotter gas have, on average, shorter wavelengths than photons emitted by a cooler gas?
What will be an ideal response?