Expressed in standard powers-of-10 notation and rounded to four significant figures, the number 0.00023648 is
a. 2.364 × 10^3.
b. 2.365 × 10^4.
c. 2.365 × 10^-4.
d. 236.4 × 10^-6.
c
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The Schwarzchild radius is defined for a given mass M as the radius for which the escape velocity would be exactly equal to the speed of light, c. What is the expression for this radius in terms of G, M, and c?
What will be an ideal response?
From meteorite and lunar rock samples, astronomers have determined the age of the Solar System to be ____
a. 4.6 million years b. 10 million years c. 2.4 billion years d. 4.6 billion years e. 8.4 billion years
Earth's primary atmosphere was probably mostly ____________, ____________, and ______________
Fill in the blank(s) with correct word
Under what condition is average velocity equal to the average of the object's initial and final velocity?
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