Science & Mathematics - 5 December 2007

like, b4 it's born?

and say why plz :)

to me, it seems WRONG not to do it. what person would object to being spared to a genetically linked disease? and the generations after will be cured too! :)

it's a long way to go, but we can get there!

2007-12-05 12:50:01 · 5 answers · asked by Abira 4 in Biology

Which of the following does not result in an increase in the potential energy of the object involved?
A) air being pumped into a bicycle tire
B) water flowing down rapids
C) a weight being lifted off the ground
D) a roller coaster car moving uphill
E) a spring being stretched

2007-12-05 12:49:16 · 4 answers · asked by Anonymous in Physics

The A string of a violin is a little too tightly stretched. Four beats per second are heard when the string is together with a tuning fork that is oscillating accurately at concert A (440 Hz).

What is the period of the violin string oscillation?

Explain your work. Thanks!

2007-12-05 12:48:50 · 2 answers · asked by Anonymous in Physics

Organ pipe A, with both ends open, had a fundamental frequency of 300 Hz. The third harmonic of organ pipe B, with one end open, has the same frequency as the second harmonic of pipe A.

How long are (a) pipe A and (b) pipe B?

Explain your work. Thanks! :)

2007-12-05 12:48:10 · 2 answers · asked by Anonymous in Physics

A car travels for 1/2 hour at 40 km/h. How far does the car travel?

2007-12-05 12:47:59 · 2 answers · asked by i ♥ david a.=]] 2 in Physics

only be 112 known elements. This is a homework question. I have read my book and I'm just not grasping what it's saying. Please don't bash me...I have really read it several times and I am just not seeing it and understanding it. Please explain...big test Friday and I need to do good on this test. Thank you.

2007-12-05 12:47:27 · 10 answers · asked by lizzye71 2 in Physics

Calculate the work done by a o.47N force pushing a 0.026kg pencil 0.26m against a force of friction of 0.23N

2007-12-05 12:47:01 · 1 answers · asked by Pharaoh 1 in Physics

Ok lets say you hafta find three consecutive EVEN integers for 147
You would do:
n+n+2+n+4=147
then
3n+6=147
then subtract six
3n=141
then divide 3
n=47
ok so 47 isnt even, would you just go up one and write 48, 50, and 52? Help please!!

2007-12-05 12:45:13 · 8 answers · asked by Anonymous in Mathematics

The source of a sound wave has a power of 1.00 μW. If it is a point source, (a) what is the intensity 3.00 m away and (b) what is the sound level in decibels at that distance?

Explain your work. Thanks! :)

2007-12-05 12:42:58 · 2 answers · asked by Anonymous in Physics

when using the distance formula, does it matter which point is (x,y) and which point is (x^2,y^2)

how can you make an estimate of a certain area more accurate?

2007-12-05 12:41:32 · 5 answers · asked by skatebaker416 1 in Mathematics

3 impacts..

2007-12-05 12:41:05 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-05 12:40:59 · 2 answers · asked by Smart computer® 1 in Biology

IP A block with a mass of 3.1 kg is placed at rest on a surface inclined at an angle of 45° above the horizontal. The coefficient of static friction between the block and the surface is 0.50, and a force of magnitude F pushes upward on the block, parallel to the inclined surface. (a) The block will remain at rest only if F is greater than a minimum value Fmin, and less than a maximum value Fmax, Explain the reasons for this behavior. (b) Calculate Fmin (c) Calculate Fmax

2007-12-05 12:40:47 · 1 answers · asked by Anonymous in Physics

At the airport, you pull a 18-kg suitcase across the floor with a strap that is at an angle of 45° above the horizontal. Find (a) the normal force and (b) the tension in the strap, given that the suitcase moves with constant speed and that the coefficient of kinetic friction between the suitcase and the floor is 0.38.

2007-12-05 12:38:51 · 2 answers · asked by Anonymous in Physics

2007-12-05 12:37:46 · 3 answers · asked by lorry 1 in Biology

2007-12-05 12:36:38 · 2 answers · asked by lorry 1 in Biology

A projectile of mass 0.929 kg is shot from a cannon. The end of the cannon's barrel is at height 6.8 m. The initial velocity of the projectile is 9.5 m/s. The projectile rises to a max height of delta y above the end of the cannon's barrel and strikes the ground a horizontal distance delta x past the end of the cannon's barrel. Gravity is 9.8 m/s^2

The vertical component of the initial velocity at the end of the barrel where the projectile begins it's trajectory is 7.58 m/s and the max height delta y the projective achieves after leaving the end of the cannon's barrel is 2.93 m.
A) Determine the time it takes the projectile to reach its in max height in seconds.
B) How long does it take the projectile to hit the ground in seconds?
C) Find the magnitude of the velocity vector when the projectile hits the ground. Answer in m/s
D) Find the magnitude of the angle(with respect to the horizontal) the projectile makes when impacting the ground. Answer in degrees.
E) Find the range delta x

2007-12-05 12:36:22 · 1 answers · asked by Anonymous in Physics

What is the greatest possible values of these integers?

2007-12-05 12:35:39 · 18 answers · asked by Maddy505 1 in Mathematics

Like: Purple and White (PPXWW)

2007-12-05 12:33:43 · 6 answers · asked by Anonymous in Biology

Which organism has the most similar DNA to humans?

2007-12-05 12:32:21 · 11 answers · asked by Anonymous in Biology

how do you simplify square roots?

i know you have to take factors out of the square root symble and all of that but not exactly.
please help

2007-12-05 12:31:58 · 2 answers · asked by Americanito 1 in Mathematics

How do you get it into parametric form?

2007-12-05 12:31:46 · 1 answers · asked by bentheredonethat122 2 in Mathematics

the rest of the cell cycle?

2007-12-05 12:31:11 · 1 answers · asked by lorry 1 in Biology

2007-12-05 12:30:17 · 3 answers · asked by killzone 2 in Engineering

2007-12-05 12:28:48 · 4 answers · asked by Rie Niou 2 in Earth Sciences & Geology

i want to know how 2 solve inequalities. lets use this problem in an example...

6+11x >-60

and just so i can get the hang of it...

-26 < 4 - 5x

help with these would be great. thanx :]

2007-12-05 12:26:48 · 8 answers · asked by smartiechick16 2 in Mathematics

How would a topographic map of the Atlantic Coastal Plain differ from a topographic map of the Rocky Mountains?

2007-12-05 12:26:23 · 2 answers · asked by Anonymous in Geography

2007-12-05 12:24:58 · 21 answers · asked by Anonymous in Other - Science

2007-12-05 12:24:24 · 7 answers · asked by Maddy505 1 in Mathematics

2007-12-05 12:23:44 · 4 answers · asked by Anonymous in Mathematics