Science & Mathematics - 18 November 2006

2006-11-18 13:21:39 · 4 answers · asked by Erin D 2 in Other - Science

This image (see link below) shoes a Cavendish appartus like the one used to find G. It has a large lead sphere that is 5.9 kg in mass and small one with a mass of 0.047 kg. Their centers are separated by 0.055 m. Find the force of attraction beween them.

*Image link:
http://img227.imageshack.us/my.php?image=scanob6.jpg

Please help me with this problem.
I don't understand the concepts of formulas involved.

2006-11-18 13:21:13 · 1 answers · asked by swimmertommy 1 in Physics

Person is asleep. c.o. is 10,000 what would the heartrate be and what would stroke volume be.
next ?
stroke volume is 150. what would heart rate be and cardiac output be?

next ?
c.o. is 3000 s.v. is 75 what would h.r. be?

cardiac output is co
heart rate is hr
stroke volume is s.v.

2006-11-18 13:20:34 · 1 answers · asked by Maryann V 1 in Biology

A solid brass ball of mass 0.280 g will roll smoothly along a loop-the-loop track when released from rest along the straight section. The circular loop has radius R = 14.0 cm, and the ball has radius r << R. (a) What is h if the ball is on the verge of leaving the track when it reaches the top of the loop? (b) If the ball is released at height h = 6.00R, what is the magnitude & direction of the horizontal force component acting on the ball at point Q?

2006-11-18 13:18:51 · 1 answers · asked by afchica101 1 in Physics

The integral (with lower limit 0 and upper limit 1) of (4sqrt of u + 1)^2 du.
Note: The 4 is part of the square root, not 4 times the sqrt of u.

2006-11-18 13:12:36 · 2 answers · asked by ANON 1 in Mathematics

2006-11-18 13:09:49 · 3 answers · asked by Meder 2 in Physics

2006-11-18 13:08:49 · 2 answers · asked by Meder 2 in Physics

I know there is probably a simple answer to this question, but for the life of me I can't figure it out. I've drawn a blank... Ugh! So, can anyone help me with this:

Solve for sin θ = cos (θ/2)

Any help would most appreciated.

Thanks!

2006-11-18 13:07:10 · 10 answers · asked by kleeoh1 1 in Mathematics

I don't even understand how to attempt this problem.
Please help.

2006-11-18 13:07:07 · 4 answers · asked by swimmertommy 1 in Physics

2006-11-18 13:05:20 · 5 answers · asked by February Rain 4 in Biology

2006-11-18 13:04:13 · 7 answers · asked by Pierre G 1 in Botany

2006-11-18 13:03:23 · 11 answers · asked by Suzan T 2 in Chemistry

2006-11-18 13:02:22 · 4 answers · asked by Pierre G 1 in Botany

My aim is to go into manufacturing of small electrical consumer items starting with suckets and plugs. What i need is someone who can give me a design that will conform to universal standards but unique in physical appearance. I have limited time to get an answer.

2006-11-18 13:02:15 · 3 answers · asked by malo 1 in Engineering

2006-11-18 12:59:53 · 2 answers · asked by djm6729 1 in Astronomy & Space

2006-11-18 12:59:25 · 4 answers · asked by ede1964 2 in Earth Sciences & Geology

The hands of clock A point to 6 o clock. At the moment past 6 the minute hand traveling downwards will have a increase of speed of x% every minute due to gravity. At 6:15 the speed of the minute minute hand will be of constant speed until 6:30. Since the hour hand at 6 is traveling upwards against gravity, its motion will be slowed by y% every hour until 9:00. After 9 the hand will have a constant speed until midnight. If clock B is place in a weightless enviroment, the minute and hour hand will perfectly match each other some time after 6 o clock. The hands of clock A will do the same, although at a different time. In terms of x and y, the absolute difference in times when this will happen is what?

2006-11-18 12:59:14 · 1 answers · asked by clamcrunchies2 2 in Mathematics

2006-11-18 12:58:05 · 2 answers · asked by charleicia s 1 in Botany

Can someone tell me.

2006-11-18 12:57:15 · 8 answers · asked by onedot.darling 4 in Mathematics

can mercury flow quickly the element??

2006-11-18 12:56:04 · 7 answers · asked by stolen kisses 2 in Chemistry

2006-11-18 12:54:53 · 3 answers · asked by Anonymous in Engineering

A sample of COCl2(g) in a reaction vessel at an initial concentration of 0.500 M is heated to 800°C. The equilibrium concentration of CO(g) was found to be 0.046 M. What is the equilibrium constant for the reaction at 800°C?

A. 0.00047
B. 0.0047
C. 0.047
D.0.00094

2006-11-18 12:54:16 · 4 answers · asked by Ashley C 1 in Chemistry

my boyfriend turned on the light this morning and he said and flickered like it was going to blow then it went fine then a couple of minutes later the whole light bulb exploded and shattered all over him. is this normal? why did this happen?. there is no cover over the light it is just dangling from the roof.

2006-11-18 12:53:41 · 5 answers · asked by Anne 2 in Physics

2006-11-18 12:50:54 · 10 answers · asked by rebel son 1 in Chemistry

2006-11-18 12:46:20 · 6 answers · asked by aj 1 in Engineering

The integral of x/(1+x^4) dx.

2006-11-18 12:45:34 · 6 answers · asked by ANON 1 in Mathematics

There's a rumour circulating around my part of town (the north west of England) that temperatures this winter might be as low as -14. Has anyone else heard anything along these lines?

2006-11-18 12:45:06 · 11 answers · asked by Billy 2 in Weather

2006-11-18 12:44:21 · 1 answers · asked by gbadoe 1 in Geography

Ok, so I’m doing a controversial research paper in which I must pick a side and defend it. I am for it for these reasons: The advancement of therapeutic cloning (growing organs,) the cure for numerous diseases, and the study of human development (why we are the way we are, prevention of birth defects etc.) Ok, so give me your input; tell me why you’re for OR against it. Also, if you’re for it, can you provide good information and the possible outcome of that research? I've already searched the net but I’d like personal opinions. Thanks! And please don’t take this topic personal. Just because I'm for it doesn’t mean in not religious.

2006-11-18 12:42:54 · 10 answers · asked by Christopher G 2 in Medicine

How do these things cause speciation?

This was a question on my study guide for a test about evolution that I have to take soon. I understand how reproductive isolation causes speciation, and I'm pretty sure I understand the geographical isolation, too. But by variation, I think my teacher was talking about genetic variation, and I'm not sure how that would cause different species to be formed.

2006-11-18 12:36:38 · 4 answers · asked by Anonymous in Biology