What part of a comet has only been seen by a space probe?
A) meteoroid trail
B) dust tail
C) ion tail
D) coma
E) nucleus
E
You might also like to view...
A voltage reading is obtained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this action?
A) The current increases. B) The current decreases. C) The current does not change. D) The current increases if the meter's internal resistance is less than the original resistance in the circuit and decreases if its internal resistance is greater than the circuit's original resistance.
A homeowner has a new oil furnace which has an efficiency of 60%. For every 100 barrels of oil needed to heat his house, how much (in barrels of oil) goes up the chimney as waste heat?
a. 20 b. 60 c. 40 d. 80 e. 10
Bones show up in x ray images because they absorb x rays more efficiently than muscle and other tissues do
Indicate whether the statement is true or false
Power: A 200-? resistor is rated at 1/4 W. What is the maximum current it can safely draw?
A. 0.035 A B. 0.35 A C. 50 A D. 0.25 A