Recent content by hkhandrika

Nm... I got the answer from my Physics GSI. Thanks for the help anyway.

Ok, but what is the distance from? The event horizon? The singularity, or some calculated center of the BH? Also, what about the entropy of a black hole. What exactly can it tell us, and how does one go about calculating it. Sorry for being so persistent/annoying. I hadn't checked the question...

I know that the schwartzchild radius is 2GM/C^2 = Rs, but what does this actually mean? Is this the radius of the event horizon, or the distance from the singularity to the event horizon, or something else? Also, how does one measure the entropy of a black hole, and what can this entropy...

When I was doing science fair projects in astrophysics, sometimes I felt like asking my mentor random astronomy questions that I had in my mind. He was a very great man and taught me a lot about astronomy and kept my interest in the subject alive such that I decided I wanted to major in...

Wow, I was just about to say that though the thought of something outside of the universe, a boundary to the universe and what happened before the big bang exist, our maths and sciences may not be able to explain it, so scientists tend to stay away from those realms. Very interesting question...

Got the answer you guys! Woohoo! Thanks everyone for the help. This helped me understand circuits which is really good since we have a midterm coming up.

In nature, they usually occur with stars that are greater than 2 solar masses. However if you crunched something down to a small small size then you could get a black hole. The way to measure this is with the schwarzchild radius equation: R = 2Gm/c^2 Where R = radius from singularity to the...

No particles cannot disappear unless you have a matter & anti-matter collision in which both particles disappear and get converted COMPLETELY into gamma ray energy. I don't remember who came up with this idea, but I remember reading it in a book by Stephen Hawking.

The material will get torn apart until it becomes just atoms and subatomic particles. After that, no one really knows what happens other than it heads towards the singularity. Some have said that it leads into another universe... another dimension, only it's the BH that decides where you end up...

Ok here is why you need angular momentum. The only way to detect a black hole is to observe it's effects on other objects in the universe. Let us say for example, a star comes far too close to a black hole. Due to the intense gravitational pull of the BH, the material of the star will literally...

The mass would end up being ripped apart until it was mere atoms and travel towards singularity, but of course you can't just go to the center of the milky way (for instance), shine a flashlight, and hope to see where the matter that's being ripped apart from a nearby star ends up in a black...

Ramollari, Thank you for your advice. There are indeed 2 answers to the question. One is for the current traveling left and the other for the right. The voltage for the resistors in parallel is 4.0*6.5 = 26 V. When the parallel resistors are put together we get 1/4 + 1/8 = 3/8 so...

Ok, sorry for seeming like someone new to the field, but maybe i guess i just made this problem harder than it should be. Since the resistors are in parallel, the voltage at the point before the resistors and after the resistors is the same, so the voltage at all the resistors in parallel are...

If the current in the 4-kohm resistor is say 10 A, then the current in the 8kohm resistor should be 5 A shouldn't it? Also, how can u figure out how much current is going thru the sum of the parallel resistors if you simply add them up. Thanks for all your help. I will look into it shortly...

The problem is: The current I through the 4.0 k-ohm resistor in Fig. 26-42 is 6.50 mA. What is the terminal voltage Vba of the "unknown" battery? (There are two answers.) The two answers depend on the direction of the current. Here is the picture...