The Sun is composed of about ________ and ________ plus 2% other elements.
A. 50% hydrogen/50% helium
B. 71% helium/27% hydrogen
C. 77% nitrogen/22% oxygen
D. 71% hydrogen/27% helium
Answer: D
You might also like to view...
LCD stands for:
a. linearly collimated diffraction. b. longitudinally combined depolarization. c. liquid crystal display. d. lighted compact disk.
It was the Chinese who provided critical ancient data on supernovae and comets
Indicate whether the statement is true or false
An electron (m = 9.11 × 10?31 kg) has a speed of 0.50c. Determine the difference between its relativistic kinetic energy and the kinetic energy calculated without considering relativity.
A. 3.0 × 10?15 J B. 2.0 × 10?15 J C. 1.5 × 10?15 J D. 2.4 × 10?15 J E. 1.8 × 10?15 J
Which will win the race to the bottom of the incline: a hoop, or a disk with the same mass and radius?
A. the hoop B. the disk C. they will both reach the bottom at the same time