First, rpm is RedHat Package Manager. Compilation is done with gcc, the GNU C Compiler.
To add that kernel to grub2's menu, as root you'd need to run:
grub2-mkconfig > /boot/grub2/grub.cfg #redirection is favored by Red Hat
Check out the man page @ man grub2-mkconfig
Answer:
Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.
