What does this diagram represent?
A) the basic way in which the greenhouse effect works
B) the carbon dioxide cycle
C) the basic reason that our sky is blue
D) the basic mechanism of the Coriolis effect
A) the basic way in which the greenhouse effect works
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The look-back time for the fictional stars Chairos, Alpha Arctic, Chi Omega, and Delta Junos are 37 years, 32 years, 29 years, and 41 years respectively. From this information, we can conclude that the nearest star is _____
A) Chairos B) Alpha Arctic C) Chi Omega D) Delta Junos
Opposite of the emission-line spectrum, because an atom's set of possible absorption lines have exactly the same wavelengths as its possible emission lines.
A. absorption line spectrum B. emission line spectrum C. continuous spectrum
Briefly explain why radiation was trapped for 380,000 years during the era of nuclei, and why the cosmic background radiation was formed at the end of this era
What will be an ideal response?
Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.25 cm. If the nozzle has an opening of diameter 1.30 cm, and if the water leaves the nozzle at a speed of 14.0 m/s, what is the speed of the water inside the hose?
a. 4.67 m/s b. 41.9 m/s c. 2.38 m/s d. 5.67 m/s e. also 14.0 m/s