Where do the majority of naked-eye stars fall on the H-R diagram? Is this true of the majority of stars close to our Sun as well?
What will be an ideal response?
Most bright stars are much hotter main sequence stars than our Sun, so lie above it and to the left on the main sequence. Red dwarfs are actually the most common type of stars in the sky and are underrepresented on H-R diagrams of visible stars because they are dim.
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The "bottom-up" approach to creating artificial life starts
A) with simple bacteria and attempts to add DNA sequences to them to make them more complex B) with advanced robots and attempts to make them able to reproduce C) in the laboratory with the raw ingredients of life, and seeks to reproduce life in much the same way that it presumably originated billions of years ago D) with existing organisms and genetically strips them down, then tries to rebuild them into new species
Rather than an explosive death, the Sun will likely end its life forming a(n) ________ surrounding a(n) ________
Fill in the blank(s) with correct word
In a heat pump,
a. heat is used to do work. b. heat flows spontaneously. c. the same process is used as in a heat engine. d. work is used to transfer heat.
The heavy boy and light girl are balanced on the seesaw. If they both move inward so that each is exactly half the original distance from the pivot, then the
1) boy's end will move downward. 2) girl's end will move downward. 3) seesaw will remain in balance. If the fulcrum of the seesaw is repositioned so each can sit at an END of the board and be in balance, then if each moves inward half way the 4) boy's end will move downward. 5) girl's end will move downward. 6) seesaw will remain balanced.