The overall result of the proton-proton chain is ________
A) 6 H becomes 1 He + energy
B) p + p becomes 2H + energy
C) 4 H becomes 1 He + energy
D) individual protons are joined into long chains of protons
C
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A bird flies 3.0 KM due west and then 2.0 KM due north. what is the magnitude of the bird's displacement?
A. 2.0 km B. 3.0 km C. 3.6 km D. 5.0 km
Which of the following substances has the greatest specific heat?
a. copper b. ice c. water d. steam e. Ice, water, and steam have equal specific heats since they are the same material, and this specific heat is greater than that of copper.
A system undergoes a reversible cycle that traces a triangle in the p-V plane
In the first leg of the cycle, the gas contracts at a constant pressure of 100 kPa from 30 L to 22 L; in the second leg, the pressure increases to 150 kPa, with the volume staying constant. In the third leg, the pressure and volume change so that the system follows the straight line that closes the triangle. How much heat is supplied to the system in each cycle? A) 200 J B) 300 J C) - 300 J D) 400 J E) - 400 J
What are causes of diffusional mass transfer?
What will be an ideal response?