Physics, 01.11.2019 06:31, cocodemain
The distance from earth of the red supergiant betelgeuse is approximately 643 light-years. if it were to explode as a supernova, it would be one of the brightest stars in the sky. right now, the brightest star other than the sun is sirius, with a luminosity of 26lsun and a distance of 8.6 light-years. part a how much brighter in our sky than sirius would the betelgeuse supernova be if it reached a maximum luminosity of 1.1×1010 lsun? express your answer using two significant figures.
Answers: 2
Physics, 22.06.2019 15:30, anahitrejo1
1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?
Answers: 1
Physics, 23.06.2019 01:00, star296
Carmen is load furniture and boxes onto a moving truck. she picks up boxes of her things, places them on a cart, and pushes the cart to the moving van. which term best describes the type of force carmen uses? a. contact b. friction c. gravity d. noncontact
Answers: 2
The distance from earth of the red supergiant betelgeuse is approximately 643 light-years. if it wer...
Biology, 02.10.2021 14:00
Mathematics, 02.10.2021 14:00
Social Studies, 02.10.2021 14:00
Mathematics, 02.10.2021 14:00
Chemistry, 02.10.2021 14:00