Recent content by tibessiba

Ok... I see. Thank you very much!

If I rearrange the equation to find the mass of the star this is what I get: M=[(2pir^3/2)^2]/GT Is this right? It is what I have been using, but I can't come up with the correct answer.

I calculated it again and this time I got 1.44*10^37, but that is also wrong... What am I doing wrong?

Using that I calculated the mass of the star to be 1.39 * 10^64... but that is wrong... so where did I go wrong??

T should = 34732800 sec r should be 2.2*10^11 m correct??

oops, I forget r^3 in the equation.. so: T^2=(4pi^2/GM)r^3

So, then I use T^2=4pi^2/GM somehow? I guess I'm not exactly sure how...

It states that the planet orbits 2.2*10^11 m from its star. This would them be the distance, correct??

Oops.. Yes I do mean 1.30*10^4...

Oh, ok... Thanks

Is this projectile motion?? Homework Statement A projectile is shot straight up from the Earth's surface at a speed of 1.30×104 km/hr. How high does it go? Is this just a projectile motion problem? Or is it different because it has something to do with the theory of gravity...

Anybody?

Gravitational Force---Need Help Fast! Homework Statement You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8*10^7 m and its rotation period to be 22.3 hours. You have previously determined that the planet orbits...

Ok, Thank You! I got it. I took 24N - 67.7N and then divided that by 0.027m to get -1614.8N/m. But now the next question is: At what compression length will the scale read zero? delta y = ? cm Do I just take the total force (67.7N) and divide it by the spring constant?? (and...

I assume it to be conservative forces because that is what we have been focusing on in class. The only given values for this problem are: the mass of the skateboarder = 51.0 kg the fact that the quarter pipe is one quarter of a circle with radius 3.30 m I am not sure how I would go...