M dwarfs on the main sequence are brown dwarfs
a. True
b. False
Indicate whether the statement is true or false
False
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The emergency blankets in some first-aid kits consist of very thin Mylar that has been coated with aluminum to make it shiny. How can such thin plastic be a blanket? Which mechanism of a person’s heat loss is most effectively suppressed by the blanket?
A. Conduction B. Convection C. Radiation
How does the age of the universe depend on Hubble's constant, and why?
What will be an ideal response?
If an object isn’t accelerating, no external force is acting on it
1.True 2.False
Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel prize in physics for their development of a(n)
a. electroweak theory b. GUT c. quark theory d. generalized theory of relativity e. theory of strangeness