To get to her physics class, Alice walks 0.25 mi to the bus stop. She takes the bus 1.2 mi to the train station. She takes the train 13 mi and walks the remaining 0.17 mi to her class
How far is her commute expressed to the correct number of significant figures? A) 14.6 mi
B) 10 mi
C) 15 mi
D) 14.62 mi
E) 14.620 mi
C
You might also like to view...
Seyfert galaxies are always ____ galaxies
a. dwarf b. irregular c. spiral d. elliptical e. flocculent
During the first year of its operation, only 20% of the projects scheduled for the Hubble Space Telescope involved taking images and pictures of celestial objects. The remaining 80% of the telescope's time was devoted to observing the spectrum of celestial objects. Why do astronomers place such a high emphasis on looking at the spectrum of a celestial object rather than an image? Explain
What will be an ideal response?
If a star appears to move relative to other stars over a one-year period, this motion is due to the star's
A) transverse motion. B) radial motion. C) parallax shift. D) Doppler shift. E) true space motion.
Rotation curves for spiral galaxies show
A) they are slowing down. B) most have dark halos. C) rotation speed drops off further from the nucleus. D) most of the mass lies in the nucleus. E) no relation to mass.