Based on counting the number of galaxies in a small patch of the sky and multiplying by the number of such patches needed to cover the entire sky, the total number of galaxies in the observable universe is estimated to be approximately
A) 10 billion. B) 100 million. C) 100 billion. D) 1 trillion. E) 1 billion.
C
Physics & Space Science
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It is correct to say that impulse is equal to
A) momentum. B) the change in momentum. C) the force multiplied by the distance the force acts. D) all of the above E) none of the above
Physics & Space Science
A heat engine would have 100% efficiency if its low-temperature reservoir were
A) as hot as its reservoir. B) at absolute zero. C) either of these D) neither of these
Physics & Space Science
The mission of ___________ health is the fulfillment of society's interest in ensuring the conditions in which people can be healthy.
What will be an ideal response?
Physics & Space Science
Storing____________________ attributes requires constant maintenance.
a) multi-valued b) derived c) single-valued d) composite
Physics & Space Science