The four giant gas planets that are made primarily of lightweight elements are
a. earth, saturn, neptune, and venus.
b. venus, saturn, uranus, and neptune.
c. mercury, venus, earth, and neptune.
d. jupiter, saturn, uranus, and neptune.

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm