a protostar evolves by contracting and condensing in order to become?
What will be an ideal response?
a star
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The surface of the neutron star RXJ2015 has a temperature of 10 million K. This neutron star glows most strongly in
A) visible light. B) infrared light. C) emission lines. D) radio light. E) X-ray light.
The excess of nutrients in aquatic ecosystems
What will be an ideal response?
When multiplying and/or dividing quantities, you should report
a. the result rounded to the same number of digits as there are in the quantity with the greatest number of significant figures. b. all the digits that show on your calculator. c. only whole numbers. d. the result rounded to the same number of digits as there are in the quantity with the least number of significant figures.
A metallic surface has a work function of 2.50 eV. What is the longest wavelength that will eject electrons from the surface of this metal?
What will be an ideal response?