1. A light-year is the distance light travels in 1.00 year. The speed of light is 3.00 x 10 m/s. Compute the distance, in meters, that light travels in one week (7.00 days).The answer
will be in meters/week (m/wk).

How does chemistry affect our world? a. chemicals makes our world more polluted. b. chemicals keeps us healthy. c. chemicals can or hurt our world. d. chemicals make our world safe to live in.

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

What does the symbol (–hfus) indicate in a phase change?