The temperature inside an H II region is colder than inside an H I region
Indicate whether the statement is true or false
FALSE
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Jupiter's ring is composed of particles of frozen ice
a. True b. False Indicate whether the statement is true or false
Matter Waves: If a proton and an electron have the same speed, which one has the longer de Broglie wavelength?
A. the electron B. the proton C. It is the same for both of them.
Astronomers measure distances across the sky as _____
A) angles expressed in units of degrees and subdivisions of degrees B) volume expressed in units of gallons and pints C) energy expressed in units of calories and joules D) length expressed in units of miles and yards
The following quantities relate to the rate of change of position. Which pair will always have the same magnitude?
A. Average speed and average velocity B. Average velocity and instantaneous velocity C. Instantaneous speed and instantaneous velocity D. Average speed and instantaneous speed