Which of the following statements is true of the nuclear reactions in the Sun?
A) They take place only near the center.
B) They take place only near the surface.
C) They are entirely endothermic reactions.
D) They occur at temperatures less than 100,000 K.
A
You might also like to view...
Which types of galaxies have a clearly defined spheroidal component?
A) spirals only B) irregulars only C) lenticulars only D) ellipticals only E) all but irregulars
Naturally radioactive nuclei can decay spontaneously by emitting the following particles:
a. helium nuclei, electrons, photons b. electrons, neutrons, protons c. helium nuclei, electrons, protons d. electrons, neutrons, photons e. quarks and leptons
A wheel starts from rest and rotates with a constant angular acceleration about a fixed axis. It completes the first revolution 6.0 s after it started. How long after it started will the wheel complete the second revolution?
a. 9.9 s b. 7.8 s c. 8.5 s d. 9.2 s e. 6.4 s
Galileo's discovery of Saturn's moons proved that Earth, too, could move and still keep its satellite
a. True b. False Indicate whether the statement is true or false