Recent content by kelseymclean

So this value, 30.86 is LRedGiant/ L original? how do i go about finding out how far it can be seen from?

The luminosity increases by 50^2/(3^4) Because temperature drops by a factor of 3?

The question is A main sequence star is barely visible at a distance of 20 pc with a certain telescope. The star subsequently ascends the red giant branch, during which time its surface temperature drops by a factor of 3 and its radius increases by a factor of 50. a) Determine the how...

Oh, I didn't realize that in a classic curling shot, they have the same mass... We've done examples in class where the rocks have the same mass, and some have different... Thanks for your help everyone :)

Thats just it, it doesn't say they are the same. It doesn't specify what the mass is of either of the stones..

Homework Statement In a classic curing shot, the shot stone, traveling at 6.0m/s [E] hits a stationary stone. The target stone is propelled at a velocity of 2.0 m/s [East30degreesSouth] What is the velocity of the shot stone after the collision? (Assume the collision is fully elastic)Homework...