On a velocity-time graph for a particle, suppose the plot starts at some positive velocity and then follows a straight line to zero at a later time. Which of the following must be true about a position vs. time graph for this same time interval?
a. The curve will start at a positive position value and follow a straight line to zero at the later time.
b. The curve will rise steeply at first and as time goes on will level out approaching its highest position value at the later time.
c. The curve will drop steeply at first and as time goes on will approach its lowest position value at the later time
d. The curve will start at the zero of position and follow a straight line to its highest position at the later time.
b
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a. are spectral type M stars. b. are spectral type O stars. c. are located at the bottom of the main sequence in the H-R diagram. d. have masses very similar to the Sun. e. are spectral type O stars and are located at the bottom of the main sequence in the H-R diagram.
What is not true about the Milky Way bulge?
A: It's easiest to see its center by looking in radio, IR, or X-rays B: It's actually more like a bar (sorta elongated) C: Young stars are very close to the center D: Old stars are very close to the center E: It contains both young and old stars
If two stars are emitting the same amount of light, the star that is farther will appear
a. brighter. b. dimmer. c. redder. d. bluer. e. They will have the same brightness as seen from Earth.
The process of logically inferring a result from data is called
What will be an ideal response?