Science & Mathematics - 18 December 2007

2007-12-18 17:22:25 · 7 answers · asked by Cindy C 2 in Mathematics

(6.7x10^-5)(1.2x10^10)^2
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(8.1x10^-3)^11(2.5x10^2)
the anwser is 3.9x10^36 but i cant arrive at the anwser because i dont get what to do with the exponents on the outside of the brakets. thanks

2007-12-18 17:20:51 · 2 answers · asked by Anonymous in Mathematics

2007-12-18 17:16:26 · 4 answers · asked by keychain 1 in Mathematics

I have been taking the pills a few days because I am 33 and I have a blood pressure of 150/80. They are going to monitor it a few weeks, and we will see if I need meds. There were also other natural things to take like: fish oil, cayenne, onions, apple cider vinegar, which most also come in pill form. I am also cutting salt and excercises 30 minutes a day.

2007-12-18 17:16:21 · 3 answers · asked by primalclaws1974 6 in Medicine

2007-12-18 17:13:03 · 14 answers · asked by Anonymous in Astronomy & Space

If on I did a science project on that title..What could my Purpose, Hypothesis , procedure, Results and conclusion be?

2007-12-18 17:09:31 · 5 answers · asked by Zorana =) M 1 in Earth Sciences & Geology

What kind of tringle would each of these be? I really don't understand and need help!

Equilateral, Isosceles, or Scalene?

1. Perimeter = 22. AB = 5x - 12. BC = 3x - 5. AC = x + 3.

2. Perimeter = 41. AB = 2x - 14. BC = 10 + x. AC = 5 + x.

2007-12-18 17:09:16 · 6 answers · asked by ~♥♥♥~ 3 in Mathematics

2007-12-18 17:04:52 · 2 answers · asked by Anonymous in Mathematics

I dont get this

2007-12-18 17:00:48 · 10 answers · asked by Mel 1 in Mathematics

Let's say we have two gamma distributions X~G(a,b) Y~(c,d)

What's the distribution of X+Y?

2007-12-18 16:59:49 · 2 answers · asked by Juxtaposer 2 in Mathematics

If you increse three times a certain number by 4, the square root of the result is 11, find the number.

2007-12-18 16:59:29 · 4 answers · asked by Herk Kulease 1 in Mathematics

Here are some problems I'm having help with:
1. Use natural logarithms to solve each equation or inequality.
a. 24 b. 15e^x>200

2. Solve each equation
a. log base x of 81=4.
b. log base 2 of x=1/3 log base 2 of 27

3. solve each equation or inequality
a. 4^x=6^(x+2)
b.(1/4)^3x<6^(x-2)

2007-12-18 16:58:27 · 3 answers · asked by Raquel - 3 in Mathematics

Biology Class is making the students make our own yogurt
I would like to know what is the purpose of this assignment.
Also what is the Materials of making your own yogurt.

2007-12-18 16:56:54 · 3 answers · asked by xmcristalx 1 in Biology

2007-12-18 16:53:11 · 5 answers · asked by sagar 1 in Biology

m1v1+m2v2 = (m1+m2)v3

I know that it has something to do with the conservation of momentum, but I'm not sure exactly what.
I know this one:
m1v1i+m2v2i+=m1v1f+m2v2f

But what's that first one?

Thanks!

2007-12-18 16:51:42 · 2 answers · asked by mew1033 2 in Physics

A lizard lies in the sun to regulate its body temperture. Which form of heat transfer allows the sun to warm the lizard?
a. conduction
b. convection
c. radiation
d. no heat will transfer takes place

What happens when you put in your drink to cool it down?
a. The ice transfers coldness to the warmer drink
b. Heat is transfers from the ice to the drink
c. heat is transferred from the drink to the ice.
d. the ice cracks and releases cold air into the drink

no mean answer PLZ and please explain how you got the answer

2007-12-18 16:50:31 · 2 answers · asked by VATO200 1 in Physics

im thinking about careers in marine biology. wat exactly do marine biologists do? or where can i find specific info on it? do they work with dead things? b/c i love marine life, but i totally dont do dead animals. is that a problem? thank u so much for any and all info!!!!

2007-12-18 16:46:42 · 4 answers · asked by Anonymous in Biology

A small block of mass 2m initially rests on a track at the bottom of the circular, vertical loop-the-loop, which as radius = r. The surface contact between the block and the loop is frictionless. A bullet of mass m strikes the block horizontally with initial velocity v and remains embedded in the block as the block and bullet circle the loop. Determine each in terms of m, v, r, and g

a. the speed of the block and bullet immediately after impact
b. the kinetic energy of the block and bullet when they reach a point on the loop-the-loop (stays on the track), which is half the height of the loop-the-loop. The height at this point = r.
c. the minimum initial speed of the bullet if the block and bullet are to successfully execute a complete circuit of the loop.

2007-12-18 16:45:53 · 1 answers · asked by M4tr!x 2 in Physics

Karen has a mass of 57.0kg and she rides up the escalator. Karen rode a distance of 65m. How much work did the escalator do on Karen if it has an inclination of 30 degrees?

The answer is 1.8 x 10^4 Joules. But I don't know how to arrive at it.

2007-12-18 16:44:02 · 1 answers · asked by david 2 in Physics

Which form of matter is usually the best conductor of heat?
a. solid
b. liquid
c. gas
d. plasma

A juggler is juggling four beanbags. When does each beanbag have the greatest potential energy with respect to the floor?
a. just after it is thrown
b. just before it is caught
c. when it reaches its highest point
d. when it is moving at its greatest speed

Heat is transferred from the sun to Earth-
a. conduction
b. convection
c. fusion
d. radiation

2007-12-18 16:38:58 · 2 answers · asked by VATO200 1 in Physics

the problem is

(2,-1) (5,3)

i need to know the steps!

help!

2007-12-18 16:38:13 · 9 answers · asked by soouul 1 in Mathematics

2007-12-18 16:35:31 · 9 answers · asked by Anonymous in Weather

b) 3t^2 - 8t +4/6t^2 - 4t

2007-12-18 16:34:37 · 2 answers · asked by F F 1 in Mathematics

Two people actually told me that in NYC in one of its rivers the dead people that have been murdered go up to the surface on spring and then is when cops find them. How true is that? and if its true... how so?

2007-12-18 16:31:59 · 5 answers · asked by lordnikon31 2 in Earth Sciences & Geology

2007-12-18 16:30:13 · 3 answers · asked by thomas 1 in Biology

2007-12-18 16:27:56 · 4 answers · asked by Anonymous in Biology

like germ gladiators, or something..........or maybe some of them fuse and mutate into new bacteria?


: - )

2007-12-18 16:27:49 · 7 answers · asked by Anonymous in Biology

edu sites plz!

2007-12-18 16:21:23 · 1 answers · asked by The Dude 1 in Earth Sciences & Geology

On the planet, a man is flying toward his mate at 25 m/s while singing at a frequency of 1200Hz. If the stationary female hears a tone of 1240Hz, what is the speed of sound in the atmosphere?

2007-12-18 16:17:16 · 1 answers · asked by Anonymous in Physics

Can you help me with this calculus problem?
Oil Depletion, Suppose the amount of oil pumped from one of the canyon wells in Whittier, California, decreases at the continuous rate of 10% per year. When will the well's output fall to one-fifth of its present level?

2007-12-18 16:15:19 · 4 answers · asked by Anonymous in Mathematics