The sun's apparent motion across the sky from east to west daily is due to the
a) rotation of the sun.
b) rotation of the earth.
c) orbit of the earth around the sun.
d) orbit of the sun around the earth.

Asystematic approach to problem solving is called a (an)

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?