In larry niven’s science fiction novel ringworld, a ring of material of radius 1.54 × 10^11 m rotates about a star with a rotational speed of 1.44 × 10^6 m/s. the inhabitants of this ring world experience a normal contact force ~ n. acting alone, this normal force would produce an inward acceleration of 9.77 m/s^2. additionally, the star at the center of the ring exerts a gravitational force on the ring and its inhabitants. what is the total centripetal acceleration of the inhabitants? the universal gravitational constant is 6.67259 × 10^−11 n · m2/kg2 . answer in units of m/s2.part 2: the difference between the total acceleration and the acceleration provided by the normal force is due to the gravitational attraction of the central star. ind the approximate mass of the star. answer in units of kg

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge