When dividing several quantities, the number of significant digits in the result must always be
A) larger than the number of significant digits in the most accurate of the quantities.
B) equal to the number of significant digits in the most accurate of the quantities.
C) equal to the average number of significant digits in the most and least accurate of the quantities.
D) equal to the number of significant digits in the least accurate of the quantities.
E) smaller than the number of significant digits in the least accurate of the quantities.
D
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Why didn't oxygen begin to accumulate in the atmosphere until approximately 1.5 billion years after life appeared on Earth?
A) Early forms of animal life consumed the oxygen. B) Early forms of plant life consumed oxygen. C) All the oxygen produced by life went into making the ozone layer. D) Oxygen produced by life was removed from the atmosphere by oxidation reactions with surface rocks. E) Oxygen produced by life was removed from the atmosphere by dissolving in the ocean.
The speed of light in a vacuum is 300,000,000 m/s. Represented in powers-of-10 notation, this is
a. 30 × 10^8m/s. b. 3 × 10^7m/s. c. 30 × 10^6m/s. d. 3 × 10^8m/s.
How is the geometry of an ellipse described?
What will be an ideal response?
To recharge a 12-V battery, a battery charger must move 3.6 × 105 C of charge from the negative to the positive terminal. What amount of work is done by the battery charger? How many kilowatt hours is this?
What will be an ideal response?