How will our sun change as it ages? a. it will become a white dwarf and then collapse into a neutron star. b. it will become a red giant and end as a white dwarf. c. it will become a red giant and then go supernova and collapse into a black hole. d. it will become a red giant and then go supernova, becoming a neutron star.
plz me asap

Ascientific blank must be testable and capable of being proven false?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?