I detect a star giving off more ultraviolet light than green light. What property of the star can I estimate with this information?
a) Its chemical composition
b) Its temperature
c) Its density
d) Its age
e) Its distance from Earth
Ans: b) Its temperature
You might also like to view...
Constant Angular Acceleration: A bicycle wheel has an initial angular speed of 7.2 rad/s. After turning through one-half of a revolution, the angular speed is reduced to 2.2 rad/s. If the angular acceleration of the wheel was constant during the motion, how long will it take the wheel to make the one-half revolution?
Fill in the blank(s) with the appropriate word(s).
A series of ocean waves, each 24.0 m from crest to crest and moving past an observer at a rate of 6.0 waves per second, has what speed?
a. 144 m/s b. 4 m/s c. 6 m/s d. 0.25 m/s
Some quasars have fuzz around them that produce spectra similar to normal galaxies
Indicate whether the statement is true or false
The atmosphere of ____________ contains mostly nitrogen with some methane
a. Jupiter b. Earth's Moon c. Callisto d. Titan e. Miranda