HELP IM DOING A TEST RN Find gravitational forces between 53 kg Maria and the earth, if Maria is standing at the sea
level, a distance of 6.38 x10^6 m from earth's center. Round your answer to the nearest whole
number.
A. 5890
B. 518
C. 284750
D. 4.56 x 10 ^-22

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

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.