Science & Mathematics - 7 November 2007

2007-11-07 02:05:04 · 5 answers · asked by smores 2 in Mathematics

2007-11-07 02:04:54 · 9 answers · asked by Abdul Khalid 1 in Physics

I need some serious help with logarithims.
I need to convert these equations to logarithmic equations

1. 16^3/2 = 64
2. e^x = 5

I need to write these logarthimic equations in exponential form.

3. log3 27 = 3 (Imagine the 3 is subscripted below the log)
4. log125 25 = 2/3 (Imagine the 125 is subscripted below the log)

2007-11-07 02:04:52 · 4 answers · asked by Hope C 1 in Mathematics

What volume of 6.0 M HCl would be required to dissolve 0.528g of CuO?

2007-11-07 02:02:35 · 1 answers · asked by Anonymous in Chemistry

what materials whould i have to use?
I need to create it as part of an architecture project, so i can put metalic items in the field and investigate their movement

2007-11-07 02:02:11 · 5 answers · asked by STEPHANOS C 1 in Physics

1.When the dyes present in green ink are seperated by paper chromatography, the distance traveld by the water is 10cm, the distance traveld by the yellow dye is 8cm, and the distance traveld by the blue dye is 5cm. Calculate the retention factor for the blue dye.

2.Is the mass of one dozen cookies of uniform size, shape, and mass is 156 grams, calculate the mass of a single cookie.

3.calculate the volume of a marble which when place in a graduated cylinder containing 60.0 milliliters of water, raised the volume of the water to 67.0 milliliters

4.If a solid copper cube is placed in a graduated cylinder and it displaced 27.0 milliliters of water, what would be the enge lenght of the cube?

5.If a cube has an edge lenght of 2.00 centimeters and its mass is 5.00 grams, calculate its density.

6.ice has a density of 0.92 g/cm^3. what is the volume of 1.8 kilograms of ice?

2007-11-07 02:01:05 · 3 answers · asked by Anonymous in Chemistry

After taking damage to the nervous system, whether natural or externally induced, is it possible to ascertain how much damage was done by taking some kind of exam? Which one, if possible? Thank you

2007-11-07 02:00:13 · 1 answers · asked by Sam Y 3 in Medicine

What does it mean when, in a chemical forumla, elements are written as sulfide/oxide instead of sulfur/oxygen?

2007-11-07 01:57:51 · 5 answers · asked by Caramel 2 in Chemistry

At 500 degree celsius and 699 Torr pressure, the mass density is 3.71gdm^-3. Calculate the molecular formula of sulphur under these conditions.

Ive been trying to answer this question for ages and i cant figure out how to do it. Any help will be much appreciated.

Thank you

2007-11-07 01:47:44 · 3 answers · asked by JAGDEEP S 1 in Chemistry

2007-11-07 01:43:56 · 13 answers · asked by danielle 1 in Mathematics

Dihedral group D_n of order 2n, (n>or=3), has subgroup of n rotations and a subgroup of order 2.

2007-11-07 01:39:27 · 1 answers · asked by Anonymous in Mathematics

2007-11-07 01:33:53 · 1 answers · asked by Anonymous in Physics

The two orbit one another elliptically (e=0.52), approaching as close as 11.2 astronomical units (1.669 billion kilometers or 1.04 billion miles: roughly the distance from the Sun to Saturn) and receding to 35.6 AU (5.9 billion km: approximately the distance from the Sun to Pluto), with a period of just under 80 years. (Wikipedia.com)

2007-11-07 01:32:03 · 3 answers · asked by Jansen J 4 in Astronomy & Space

the quadratic function f is defined by f(x) = x^2 + 6x + 11

1) express f(x) in the form (x+p)^2 + q, wher p and q are integers.
2)state the value for x for which f(x) is least
3) solve inequality f(x) is greater than 3
4) state the geometrical transformation which maps the curve y = F(x) onto y = f(x+2)

2007-11-07 01:28:21 · 2 answers · asked by Anonymous in Mathematics

or how can we say that violation of any one of these leads to the violation of other one

2007-11-07 01:27:56 · 1 answers · asked by gini 1 in Physics

A skater has a moment of inertia of 5 kg-m² when her arms are outstretched and 2 kg-m² when they are later brought to her sides. If she starts spinning at 3 radians/s, what is her final angular speed?

2007-11-07 01:23:19 · 1 answers · asked by hazel200012000 1 in Physics

2007-11-07 01:23:15 · 15 answers · asked by Anonymous in Medicine

2007-11-07 01:21:21 · 1 answers · asked by tash 1 in Chemistry

2007-11-07 01:20:42 · 5 answers · asked by Anonymous in Biology

From an initial rate of 15 rad/s, a wheel is uniformly accelerated to 25 rad/s after 5 seconds. What is its constant angular acceleration?

2007-11-07 01:20:38 · 1 answers · asked by Anonymous in Physics

A 40 kg girl who is running at 2.5 m/s jumps on a stationary 10 kg sled on a frozen lake. How fast do she and the sled then move?

2007-11-07 01:19:49 · 1 answers · asked by Anonymous in Physics

I'm 14 and still can't take a pill, I find it hard to swallow and the pill stays on my tongue. I even tried swallowing it in a piece of food, but that didn't work.
How did you learn to take it?

I have to be able to swallow a pill like right now, I'm sick with Bronchitis and need to take 2 pills. Please help me!

2007-11-07 01:19:38 · 16 answers · asked by You Don't Know Me™ 4 in Medicine

2007-11-07 01:19:23 · 4 answers · asked by ilovedstny 1 in Mathematics

I am trying to see if I have the capacity for some new equipment in my plant. I know the equipment is 1500-2000 CFM and I have 3 machines with 312 ACFM. Do I have the capacity and what is the difference between the two?

2007-11-07 01:16:03 · 0 answers · asked by dprut 2 in Engineering

It would probably be the greenest source of energy imaginable, and with no detrimental effect to the Sun.

It strikes me as being a massive shame that the technology does not really exist that guarantees safe passage from terrestrial Earth into the gravitational urge of the Sun.

Is there any future technology that could do this? 'Space-lifts' perhaps?

2007-11-07 01:12:57 · 13 answers · asked by Golgi Apparatus 6 in Astronomy & Space

2007-11-07 01:08:35 · 42 answers · asked by Anonymous in Biology

The question has 6 different parts but please help...we haven't even covered this yet!

1) A ball of mass 20.0 g is launched horizontally from a height of 2.20 m. It is observed to travel 3.15 m horizontally. What was the initial speed of the ball?

2) What is the initial momentum of the ball?

3) What is the initial kinetic energy of the ball?

4) If the ball is instead launched at a pendulum of mass 144.0 g and makes a perfectly inelastic collision, how fast is the pendulum+ball going immediately after the collision?

5) What is the kinetic energy of the pendulum+ball immediately after the collision?

6) What is the maximum height obtained by the pendulum+ball?

2007-11-07 01:08:08 · 2 answers · asked by hmm 1 in Physics

A string with a length of 0.5m is fixed at both ends.

2007-11-07 00:59:25 · 2 answers · asked by Anonymous in Physics

2007-11-07 00:45:14 · 1 answers · asked by mew 1 in Biology

I'm not from any religion, but, I'm not sure we came from a monkey. I heard we were genetically created by another inteligent life form so they can survive because they lost the ability to reproduce them selves.

2007-11-07 00:41:27 · 20 answers · asked by StupidAsker 1 in Astronomy & Space