If the earth shrank until its radius were only one-quarter its present size without changing its mass what would a 20 n object weigh st its surface?

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

More solar radiation is absorbed by earth’s surface than by

Select all the correct answers. which three statements about electromagnetic radiation are true?