Science

Recent Answers

2013-05-21 Astronomy - Black Holes:

Hi Anne,  Well technically, no one really knows (and probably never will- see last 3 sentences of this paragraph)...  what happens when a human (or spacecraft or any other matter) passes through the "Event

2013-05-21 Algebra - Algebra Question B.5.4:

The standard equation is (y-k)^2 = 4a(x-h) where (h,k) is the vertex.  The distance from the vertex to the focus is "a" and that's also the distance from the vertex to the directrix.  So in this case,

2013-05-21 Bluebirds - Eastern Bluebirds:

Hi Brian. The book is mailing this week. It will have contacts for in-box traps for the killer house sparrows.(The Van Ert is best) It is best to wait until an egg or two is laid so they are bonded to

2013-05-21 Electronics - Ask for electromagnetic induction model:

Current is induced by moving a coil of wires in a magnetic field. In your example I don't understand the movement of the magnetic field (or the coil if the magnetic field remains stationary).  Can you

2013-05-21 Astronomy - stars:

Exactly the same number of years as its distance in light years. So, for example, if we see a star supernova in a galaxy four million light years away, we are seeing what actually happened four million