Comets are easier to identify than asteroids when they are close to the Sun
Indicate whether the statement is true or false
TRUE
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Interstellar extinction and the reddening of light by the interstellar medium (ISM) are both caused by _____
a. atoms and molecules in the ISM b. only atoms in the ISM c. only molecules in the ISM d. only dust in the ISM e. dust, atoms and molecules of the ISM
GPS stands for
a. the metric system of measurement b. grams per second c. Global Positioning System d. a space shuttle e. none of the above
The amount of current in an LED bulb rated 10.5W-120V is
A) less than 1 A. B) about 1 A. C) more then 1 A.
A particle of kinetic energy 50 eV in free space travels into a region with a potential well of depth 40 eV. What happens to its speed?
A) It remains the same. B) It increases in the region of the well. C) It decreases in the region of the well. D) It cannot be determined from the information given.