The hottest (O and B type) stars are usually binary stars, while the coolest (M type) stars are usually single stars.
Answer the following statement true (T) or false (F)
True
Physics & Space Science
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Aerodynamic lift results from ________ Principle.
What will be an ideal response?
Physics & Space Science
Fusing two iron nuclei would occur with
A) absorption of energy. B) release of energy. C) neither of these
Physics & Space Science
Heat Engines: A heat engine receives 7000 J of heat and loses 3000 J in each cycle. What is the efficiency of this engine?
A. 57% B. 30% C. 70% D. 43%
Physics & Space Science
Motion combines the concepts of position
change (length) and time. Which of the following combination of units is used to describe the velocity of a moving object? a)length/time b)length x time c)time/length d)Length/time2
Physics & Space Science