# Recent content by maggiemicmuc

1. ### Core temperature of stars

I'm wondering how realistic it is for a 50 solar mass star to have a core temperature of 3.14*(10^7) K. This isn't much greater than the core temperature of the sun, which is 1.5*(10^7) K. Have I made some huge miscalculation, or does this seem feasible? Thanks.
2. ### Spring launcher

Thanks so much, that did end up working (except we had to do minus 1/2g.. instead of +1/2 g). :)
3. ### Spring launcher

Ooh okay, so the final equation would be something like: y = vsin\theta(x/vcos\theta) + 1/2 g (x/vcos\theta)^2 Is that right? And then you re-arange to find v, and sub in y and x for the height and distance of the target?
4. ### Spring launcher

Thanks! But we've figured that out; we know how to figure out the velocity when we know how far back we pull the spring (x), but what we don't know is how to find which velocity we'd need to get the spring to hit the target. Once we get that velocity, we'd work back and figure out how far back...
5. ### Spring launcher

[SOLVED] Spring launcher Homework Statement A spring is launched to hit a target. The target is at a certain distance and height. How do you find the velocity needed to hit the target? The height and distance of the target, and the angle of the launcher are given. Homework Equations...