The overall helium fusion reaction is
A) three helium nuclei fuse to form one carbon nucleus.
B) two helium nuclei fuse to form one beryllium nucleus.
C) two hydrogen nuclei fuse to form one helium nucleus.
D) four helium nuclei fuse to form one oxygen nucleus.
A
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Thin Films: A 360-nm thick oil film floats on the surface of a pool of water water. The indices of refraction of the oil and the water are 1.5 and 1.33, respectively. When the surface of the oil is illuminated from above at normal incidence with white light, what are the two wavelengths of light between 400 nm to 800 nm wavelength that are most strongly reflected?
A. 410 nm and 700 nm B. 430 nm and 720 nm C. 450 nm and 740 nm D. 470 nm and 760 nm E. 490 nm and 780 nm
Conduction: If, with steady state heat flow established, you double the thickness of a wall built from solid uniform material, the rate of heat loss for a given temperature difference across the thickness will
A. become one-half its original value.
B. also double.
C. become one-fourth its original value.
D. become 1/
of its original value.
E. become four times its original value.
Molecular spectra, like elemental ones, involve only the vibration of the particles
Indicate whether the statement is true or false
A newly formed protostar will radiate primarily at which wavelength?
A) visible light B) X-ray C) infrared D) ultraviolet E) radio