Comet nuclei typically have an average density of 0.5 g/cm3. This suggests a(n) ________ composition.
A. icy and gaseous
B. icy and rocky
C. icy and loosely packed
D. gaseous and rocky
E. gaseous
Answer: C
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Determine the expected temperature drop at the contact between two 304 stainless steel parts if the overall temperature drop across the two parts is 100ºC.
What will be an ideal response?
A mule is an example of an exception to which of the fundamental characteristics of life?
A) response to environment?mules cannot respond to changing environmental conditions and that is why they are stubborn B) evolutionary adaptation?because mules are sterile they cannot evolve and adapt C) growth and development-mules being sterile do not grow and develop like other life forms D) reproduction?a mule is sterile and cannot reproduce even though it is the product of reproduction between two closely related animals (a horse and a donkey)
Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance if the cloud layer has an area of 1.0 km2. If an electric field of 2.0 × 106 N/C makes the air break down and conduct electricity (lightning), what is the maximum charge the cloud can hold?
What will be an ideal response?
Air that flows northward from the horse latitudes in the Northern Hemisphere produces the
A) Gulf Stream. B) trade winds. C) westerlies. D) Kuroshio current.