Science & Mathematics - 21 November 2007

How many different three-letter code words
can you make using the letters A,B and C
(a) If repetition of the letters is NOT Permitted
(b) If repetition of the letters IS Permitted.

2007-11-21 15:22:37 · 3 answers · asked by Anonymous in Mathematics

2007-11-21 15:21:21 · 5 answers · asked by Anonymous in Mathematics

a) promote the breakdown of flycogen to glucose
b) generally have an effect opposite to that of insulin
c) cause a rise in blood glucose
d) all of the above
e) none of the above

2007-11-21 15:20:23 · 5 answers · asked by dark angel 1 in Biology

I have this question and:

Name two modifications that had to be made to the original Dalton's Atomic Theory to incorporate new experimental evidence and briefly discuss this evidence.

I know I learned it and wrote it down somewhere and I cannot for the life of me find it anywhere. These two questions are really starting to stress me out. Please HELP!!!

2007-11-21 15:14:56 · 2 answers · asked by TeddyGram 2 in Physics

a) as a gas dissolved in the plasma
b) combind iwth haemoglobin
c) as the bicarbonate ion
d) as carbonic acid
e) bound to the platelets

2007-11-21 15:11:19 · 3 answers · asked by dark angel 1 in Biology

An 83-kg baseball player slides into second base. The coefficient of friction between the player and the ground is 0.54. If the player comes to rest after 1.7 s, what was his initial velocity?

2007-11-21 15:11:10 · 3 answers · asked by Mr. Tambourine Man 3 in Physics

2007-11-21 15:10:04 · 0 answers · asked by Anonymous in Geography

if so, where can I get more reliable information?

2007-11-21 15:09:06 · 3 answers · asked by orthy 2 in Mathematics

2007-11-21 15:07:38 · 2 answers · asked by Wendy P 2 in Botany

PROVEN to help with skin and tissue repair?

2007-11-21 15:03:45 · 3 answers · asked by S i r i 1 in Medicine

I really need help on this one it's my homework

2007-11-21 15:02:41 · 25 answers · asked by Anonymous in Astronomy & Space

It might sound sort of strange, but I honestly don't believe in science, like atoms and elements, things like that. I think it's all just made up.. Am I the only one?

2007-11-21 15:01:00 · 17 answers · asked by Anonymous in Astronomy & Space

Use the following cell to answer the questions:
Cr / Cr3+ (1.00 M) // Ni2+ (1.00 M) / Ni.
a) How many milligrams of Ni would be plated on the cathode if a current of 0.23 A is drawn for 2.8 hrs?
(answer must be in mg of Ni)

b) What is [Cr3+] when [Ni2+] has dropped to 10-4 M?
(answer must be in M)

c) What is the cell potential at the conditions described in Part b?
(answer must be in V)

2007-11-21 14:56:08 · 1 answers · asked by gcnrockerchic2431 2 in Chemistry

What do these equal? They are either indeterminate, Non-existant or a number
a) 1^-infinity
b)infinity^-e
c) 0^-infinity
d) 1/(-infinity)
e)pi^infinity
f)infinity^-infinity
g)pi^-infinity
h)(infinity).(infinity)
i)infinity^infinity

If you could give a quick explanation it would be helpful. THanks!

2007-11-21 14:55:15 · 3 answers · asked by Anonymous in Mathematics

2007-11-21 14:54:33 · 5 answers · asked by Osvaldo S 1 in Physics

For solubility of a liquid in a liquid, I know that changing the temperature won't affect it much. But why won't it affect it much? Like why is the changing of temperature ineffective to the solubility?

Thanks.

2007-11-21 14:52:34 · 1 answers · asked by Anonymous in Engineering

How close are we to finding life on other planets?

Why is astronomy not taught heavily in schools?

I have been interested in astronomy my whole life but my life has sent me down another road of majoring in management in computer information systems.

I have a hard time with math and never took calculus. What can I do to get more involved with Astronomy?

2007-11-21 14:42:42 · 7 answers · asked by Anonymous in Astronomy & Space

A 40.0 kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 21.0 m.

1. What force does the seat exert on the child at the lowest point of the ride?... magnitude and direction

2. What force does the seat exert on the child at the highest point of the ride?... magnitude and direction

3. What force does the seat exert on the child when the child is halfway between the top and bottom?... magnitude and direction

i found the centripel acceleration to be 1.84 m/s2 and the angular velocity to be 0.418879 rad/s. i have no idea what to do next :( please help. thanks

2007-11-21 14:41:40 · 1 answers · asked by Anonymous in Physics

would the Youngs modulus touch the temperature axis ie become zero when it reaches the meltingpoint ??

2007-11-21 14:39:26 · 1 answers · asked by T3RR0Rist - 1 in Engineering

Should a good doctor be old? Are there doctors who practice with passion and not for paycheck? Or are them all passioned?
Ask one or several of my questions.Thx

2007-11-21 14:37:30 · 5 answers · asked by Theta40 7 in Medicine

a) have no attraction for one another
b) have appreciable molecular volumes
c) have a molecular weight of zero
d) have no kinetic energy
e) have same exact speed

and explain thanks

2007-11-21 14:27:57 · 2 answers · asked by kp000000 1 in Chemistry

Explain why the size of objects viewed under high power is usually recorded in micrometres (um) , rather than millimetres (mm)

(1000 um = 1 mm)

2007-11-21 14:26:22 · 3 answers · asked by SmarterChild 1 in Biology

What happens to the diameter of the field of view as you move from low to high magnification?

2007-11-21 14:23:41 · 4 answers · asked by SmarterChild 1 in Biology

2007-11-21 14:23:16 · 5 answers · asked by Anonymous in Astronomy & Space

2007-11-21 14:21:04 · 3 answers · asked by Anonymous in Biology

For example why can oils be burned but not water

2007-11-21 14:18:07 · 3 answers · asked by JaeMoney 1 in Chemistry

Just realized. I'm already 14 now. I am terrible at math. Have I been chasing the wrong dream this entire time. It feels terrible to face the truth, but I'm just NOT GOOD AT MATH.

I've always been dreaming of making a salary with 6 digits. Now that it is nearly impossible for me to become an engineer, are there any other suggestions? Its gotten so bad, that I can't sleep anymore. :(

On the other hand, I've been told that I have talents in the following:

Music
Art
Impromptu Speech / Debate

Its too ambiguous! I need an expert opinion on my career path.

2007-11-21 14:17:34 · 9 answers · asked by Butterloaf 1 in Mathematics

When their favorite pizza parlor closed, a family went to a new restaurant that served only hexagonal pizzas. The hexagonal pizzas are sold according to their widest diameters. An 18-inch circular pizza used to suffice. To the nearest inch, what size pizza must they buy to have the same amount of pizza?

2007-11-21 14:17:11 · 2 answers · asked by Anonymous in Mathematics

Just realized. I'm already 14 now. I am terrible at math. Have I been chasing the wrong dream this entire time. It feels terrible to face the truth, but I'm just NOT GOOD AT MATH.

I've always been dreaming of making a salary with 6 digits. Now that it is nearly impossible for me to become an engineer, are there any other suggestions? Its gotten so bad, that I can't sleep anymore. :(

On the other hand, I've been told that I have talents in the following:

Music
Art
Impromptu Speech / Debate

Its too ambiguous! I need an expert opinion on my career path.

2007-11-21 14:16:36 · 9 answers · asked by Butterloaf 1 in Engineering

2007-11-21 14:15:19 · 9 answers · asked by warelock 1 in Chemistry