Astronomers using a 2.0-mm-diameter telescope observe a distant supernova−−an exploding star. The telescope's detector records 8.7 ×× 10−11−11 JJ of light energy during the first 10 ss. It's known that this type of supernova has a visible-light power output of 4.5 ×× 103737 WW for the first 10 ss of the explosion. Part A How distant is the supernova? Give your answer in light years, where one light year is the distance light travels in one year. The speed of light is 3.0 ×× 1088 m/sm/s. Express your answer in light years. View Available Hint(s)for Part A dd = lyly Submit Provide Feedback Next

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue