Science & Mathematics - 18 October 2007

2007-10-18 15:14:04 · 3 answers · asked by alexander b 1 in Mathematics

2007-10-18 15:13:50 · 3 answers · asked by Anonymous in Botany

1. Chromatin
2. Microtubules
3. Microfilaments
4. Endoplasmic reticulum

2007-10-18 15:12:30 · 11 answers · asked by Anonymous in Biology

2007-10-18 15:11:36 · 5 answers · asked by Anonymous in Earth Sciences & Geology

1)find the angle in radians between the planes -2x+z=1 and 3y+z=1.

2)find the distance b/w the point (4,2,1) to the line x=0, y=2+4t, z=1+4t.

3)find the distance from the point (0,5,1) to the plane -3x-3y-1z=-4.

2007-10-18 15:11:16 · 2 answers · asked by vntraderus88 1 in Mathematics

2007-10-18 15:10:45 · 2 answers · asked by Anonymous in Botany

2007-10-18 15:10:17 · 2 answers · asked by NONAME 2 in Biology

show some math equation

2007-10-18 15:09:15 · 6 answers · asked by engot 2 in Mathematics

7x^3 + 7x^2 - 84


3x ^2 - x + 3x

2007-10-18 15:07:36 · 2 answers · asked by Anonymous in Mathematics

A 2:35 kg block is pushed 1.57 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 67:5 degree with the horizontal. The acceleration of gravity is 9.8 m/s2. If the coefficient of kinetic friction between the block and wall is 0:678, and the work done
by F. Answer in units of J.

2007-10-18 15:07:28 · 2 answers · asked by Captain Jack is Back 1 in Physics

2007-10-18 15:06:14 · 5 answers · asked by Jacob 1 in Astronomy & Space

A spherical glass container of unknown volume contains helium gas at 25°C and 1.850 atm. When a portion of the helium is withdrawn and adjusted to 1.00 atm at 25°C, it is found to have a volume of 2.00 cm3. The gas remaining in the first container shows a pressure of 1.710 atm. Calculate the volume of the spherical container.

ml



can you please show me how?

2007-10-18 15:05:52 · 1 answers · asked by My point exactly 5 in Chemistry

This guy I work with told me a female friend was infested with mites around her mouth from giving oral sex to a man who had sex with a dead body.

2007-10-18 15:02:21 · 2 answers · asked by Who's that chick? 1 in Zoology

A gauge on a compressed gas cylinder reads 2400 psi (pounds per square inch; 1 atm = 14.7 psi). Express this pressure in each of the following units.
i got
(a) standard atmospheres
163 atm
(b) megapascals (MPa)
1.66E13 MPa
(c) torr
1.24E5 torr

2007-10-18 15:01:03 · 2 answers · asked by My point exactly 5 in Chemistry

2007-10-18 14:59:40 · 1 answers · asked by hasty 1 in Botany

2007-10-18 14:58:51 · 3 answers · asked by hasty 1 in Botany

I understand the "or" statements, but I'm not sure if I'm supposed to do the whole thing with switching the inequality sign and changing the number at one side of the inequality to a negative. I have a test tomorrow and still don't understand. Can anybody explain to me what to do?

2007-10-18 14:58:49 · 2 answers · asked by Tomboy with girly tendencies 4 in Mathematics

a trapeze artist weighs 8.00 * 10^2 . The artist is momentarily held to one side of a swing by a partner so that both of the swing ropes are at an angle of 30.0 degrees with the vertical.In such a condition of static equilibrium, what is the horizontal force being applied by the partner?

2007-10-18 14:58:17 · 1 answers · asked by juliamr4 1 in Physics

The instruments attached to a weather balloon have a mass of 5.5kg. The balloon is released and exerts an upward force of 97.7 N on the instruments. Acceleration of gravity is 9.8 m/s^2
What is the acceleration of the balloon and the instruments? Answer in units of m/s^2.
Also after the balloon has accelerated for 10.5 s, the instruments are released. What is the velocity of the instruments at the moment of their release.? Answer in m/s.
Assume: The upward direction is positive. What net force acts on the instruments after their release? Answer in N.
How long after their release does the direction of their velocity first become downward(negative)? Answer in units of s.

Pleaseeeee explain, i am desperate i spent 10 hours on 5 problems and i haven't solved not one! please help

2007-10-18 14:55:11 · 2 answers · asked by Anonymous in Physics

Diana is taking a tirp that is 224 miles long. She has already driven 59 miles. If she drives at a speed of 55 miles per hour, how many more miles will she need to drive to reach her dsetination?

Please! Help, I can't understand the problem. Any help is encouraged. What is the answer, and how do you actually do it?

2007-10-18 14:54:34 · 5 answers · asked by Abi 3 in Mathematics

2007-10-18 14:53:04 · 2 answers · asked by Billy M 1 in Mathematics

A bicycle has wheels of radius 0.29 m. Each wheel has a rotational inertia of 0.078 kg* m2 about its axle. The total mass of the bicycle including the wheels and the rider is 74 kg. When coasting at constant speed, what fraction of the total kinetic energy of the bicycle (including rider) is the rotational kinetic energy of the wheels?

I just don't know what they are asking for?

2007-10-18 14:52:29 · 1 answers · asked by Anonymous in Physics

list the first 5 partial sums of the series: from 1 to infinity of 5*(-1)^n *n^3

2007-10-18 14:52:01 · 1 answers · asked by ! 2 in Mathematics

the object's temperature is 500k. Moving at 3m/sec for 4.5 m. what is the total heat lost and what is the final temperature?

2007-10-18 14:52:00 · 1 answers · asked by haohao 1 in Physics

1. How are the heliocentric and geocentric models of the solar system different?

2. what contributions were made by Copernicus and Kelper changed out understanding of the solar system?

3. what are the main features of the inner and
outer planets?

4. what are the characteristics of other planerary bodies?

5. what are the conditions for living things on Earth?

6. Why do Mars and Europa are thought to be good possible places to search for evidence of life?

2007-10-18 14:51:32 · 8 answers · asked by love_moon_bb 2 in Astronomy & Space

I have heard that people get addicted to Vicodin. I would like to request another pain medication that is less addictive. Does anyone have any suggestions?

2007-10-18 14:51:21 · 7 answers · asked by Anonymous in Medicine

2007-10-18 14:49:20 · 10 answers · asked by dusty p 1 in Mathematics

2007-10-18 14:48:49 · 1 answers · asked by Anonymous in Physics

I'm in a history of science class and our teacher gave us this question as an example of what might be on our upcoming test :
On a planet where the Sidereal period of the Sun is 205 days, the Sidereal period of the Moon is 15 days, and the Synodic period of the Moon is 20 days-using a Solar calendar, how many days and months are in a year?

We weren't given any formulas, can someone tell me how to calculate this?

2007-10-18 14:48:00 · 2 answers · asked by kirby_van22 2 in Astronomy & Space

2007-10-18 14:47:42 · 3 answers · asked by David F 1 in Earth Sciences & Geology