The Moon is thought to be
a. older than Earth.
b. the same age as Earth.
c. younger than Earth.
d. infinitely old.
b
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The most likely first form of life on Earth was probably an archaea-like extremophile tolerant of high temperatures
a. True b. False Indicate whether the statement is true or false
A 10-A current flows through a wire for 2.0 min. (e = 1.60 × 10-19 C)
(a) How much charge has passed through this wire? (b) How many electrons have passed any point in the wire? What will be an ideal response?
Discuss advantages and disadvantages of two methods for solving one-dimensional steady conduction problems.
What will be an ideal response?
Near the earth the intensity of radiation from the sun is 1.35 kW/m2
What volume of space in this region contains 1.0 J of electromagnetic energy? (c = 3.0 x 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2) A) 4.5 x 10-6 m3 B) 3300 m3 C) 7.4 x 10-4 m3 D) 1400 m3 E) 220,000 m3