• How do you calculate the following?

The Andromeda Galaxy is rotating at a speed of 230 km/s, at a distance of about 100,000 LY or 6x10^9 AU from the center. What is the mass you derive from this rotation? And this is all using Kepler's Law. Thank you :)
The Andromeda Galaxy is rotating at a speed of 230 km/s, at a distance of about 100,000 LY or 6x10^9 AU from the center. What is the mass you derive from this rotation? And this is all using Kepler's Law. Thank you :)
1 answer · Homework Help · 7 years ago
• How much energy can the sun generate if its mass is 75 percent hydrogen?

1 answer · Physics · 7 years ago
• How do you solve this problem?

Hi guys. I'm wondering if you can assist me in a math problem that I need to solve for my astronomy class. "A small asteroid makes a "near miss" of the Earth. At its closest, it is seen to move across the sky at a rate of of 1 degree per minute. Approximately how long will it take to cross the sky, from horizon to... show more
Hi guys. I'm wondering if you can assist me in a math problem that I need to solve for my astronomy class. "A small asteroid makes a "near miss" of the Earth. At its closest, it is seen to move across the sky at a rate of of 1 degree per minute. Approximately how long will it take to cross the sky, from horizon to horizon?" Thank you in advance :).
2 answers · Homework Help · 8 years ago
• How do you find the p-value of a two tailed test when z=1.95?

I'm working on my Statistics take home test and I'm stuck on this particular question. Any help would be greatly appreciated, thanks.
I'm working on my Statistics take home test and I'm stuck on this particular question. Any help would be greatly appreciated, thanks.
Mathematics · 8 years ago
• Why won't some albums appear correctly on my i-tunes?

Hi guys. So, I have itunes and an I-pod. I also like to collect cds and add them to my ipod. However, the artwork nor the song names will show up on I-tunes. it just comes out as "unknown album", but it's an actual CD. Why does this happen? And why does it not happen for songs and albums I download, because those appear with artwork... show more
Hi guys. So, I have itunes and an I-pod. I also like to collect cds and add them to my ipod. However, the artwork nor the song names will show up on I-tunes. it just comes out as "unknown album", but it's an actual CD. Why does this happen? And why does it not happen for songs and albums I download, because those appear with artwork and track names. Thank you for the help =D.
1 answer · Music & Music Players · 9 years ago
• Why are men motivated to enter a higher paying field?

Hey guys. I'm studying for a Psychology test and I can't find the answer in the psychology book, and I can't find it online either. Can anybody help me? The question is: Why are men motivated to enter a higher paying field? Thank you in advance :).
Hey guys. I'm studying for a Psychology test and I can't find the answer in the psychology book, and I can't find it online either. Can anybody help me? The question is: Why are men motivated to enter a higher paying field? Thank you in advance :).
4 answers · Higher Education (University +) · 9 years ago
• Is Dean from Wizards of Waverly Place a wizard?

Well, I was doing other stuff while watching the third episode of the Wizards vs Vampires saga and I caught the part where he materialized a rose out of thin air and also made "Abraham Lincoln" appear. So, is Dean a wizard? I'm confused lol.
Well, I was doing other stuff while watching the third episode of the Wizards vs Vampires saga and I caught the part where he materialized a rose out of thin air and also made "Abraham Lincoln" appear. So, is Dean a wizard? I'm confused lol.
2 answers · Other - Television · 9 years ago
• If 0 is an acute angle and sin 0=1/2, then cos 0=?

I'm practicing for the accuplacer test for college, and this problem is stumping me. The answer is radical 3/2. How did they manage to get that? Any help would be greatly appreciated, thank you.
I'm practicing for the accuplacer test for college, and this problem is stumping me. The answer is radical 3/2. How did they manage to get that? Any help would be greatly appreciated, thank you.
2 answers · Homework Help · 9 years ago
• Why does this happen?

So a few nights ago I had a dream (err, nightmare, more like it) that my own mother was trying to kill me. However, every time I tried to open my eyes, they were stuck together and wouldn't open, leaving me die a horrific death (my mother cutting my body into many pieces with me still being conscious). Why do my eyes stick together when I try to... show more
So a few nights ago I had a dream (err, nightmare, more like it) that my own mother was trying to kill me. However, every time I tried to open my eyes, they were stuck together and wouldn't open, leaving me die a horrific death (my mother cutting my body into many pieces with me still being conscious). Why do my eyes stick together when I try to end the dream?
5 answers · Dream Interpretation · 9 years ago