Science & Mathematics - 10 October 2007

2007-10-10 05:18:06 · 3 answers · asked by devidasbhonde 2 in Engineering

2007-10-10 05:17:38 · 6 answers · asked by Anonymous in Mathematics

A piano whose mass is 170 kg is being lifted at a steady speed from ground level straight up to an apartment 10.6m above the ground. The crane that is doing the lifting produces a steady power of 560W. How much time does it take to lift the piano?

2007-10-10 05:17:37 · 2 answers · asked by Anonymous in Physics

can someone help me with these questions?

4 1/2 divided by 7 1/2.
2 1/7 x 1 2/5
1 3/5 divided by 2 7/10
4 4/5 divided by 5 1/3
10 1/2 divided by 2 1/4

thanks

2007-10-10 05:11:32 · 3 answers · asked by Anonymous in Mathematics

2007-10-10 05:10:43 · 2 answers · asked by samaneh s 1 in Engineering

Solve for r

2007-10-10 05:08:19 · 12 answers · asked by shawna 2 in Mathematics

2007-10-10 05:07:45 · 2 answers · asked by Indah S 2 in Chemistry

2007-10-10 05:04:58 · 2 answers · asked by Anonymous in Engineering

2007-10-10 05:03:43 · 6 answers · asked by Anonymous in Biology

http://i2.photobucket.com/albums/y48/xxkrystinaxx9/7_15i.gif

In the figure above, the area of the base of the rectangular box is 21 and the area of one of the faces is 30. Each of the dimensions j, k, and l is an integer greater than 1. What is the volume of the rectangular box?

2007-10-10 05:01:00 · 1 answers · asked by Anonymous in Mathematics

this question is preferred to be answered by chemistry, biology majors or professors.

2007-10-10 05:00:29 · 2 answers · asked by R C 2 in Chemistry

If the perimeter of isosceles triangle ABC is 20 and the length of side AC is 8, what is one possible value for the length of side BC?

2007-10-10 04:59:33 · 4 answers · asked by Anonymous in Mathematics

2007-10-10 04:58:37 · 2 answers · asked by Anonymous in Astronomy & Space

2007-10-10 04:58:14 · 2 answers · asked by davidwgalbraith 1 in Physics

help

2007-10-10 04:56:58 · 5 answers · asked by Robby R 1 in Mathematics

i've heard it a lot while learning PLC,but still i don't know what it means.
Would you pls help me? Thanks.

2007-10-10 04:54:00 · 2 answers · asked by Sasha.G 1 in Engineering

MATH

2007-10-10 04:52:57 · 8 answers · asked by Robby R 1 in Mathematics

pail found in bathroom,

2007-10-10 04:51:51 · 3 answers · asked by tiya b. 2 in Zoology

With no load resistor across the output terminals of the amplifier, and Vin = 0.25 V, the output voltage, Vout = 5 V. With a resistor of 50 Ω across the output terminals, Vout = 2 V. What is the output resistance of the op-amp?

Thanks in advance!

2007-10-10 04:49:07 · 1 answers · asked by squishy 1 in Physics

2007-10-10 04:48:41 · 16 answers · asked by Anonymous in Mathematics

Any help would be SO greatly appreciated. Many thanks in advance. )

2007-10-10 04:42:22 · 1 answers · asked by Anonymous in Mathematics

weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

2007-10-10 04:37:18 · 12 answers · asked by Anonymous in Mathematics

i hate to see them in pain and dying so that excludes a veternarian.... thnx

2007-10-10 04:35:41 · 10 answers · asked by pookie 1 in Zoology

For instance, the formula for finding the focus of a HORIZONTAL parabola is (h + p , k). What is it for a vertical parabola?

2007-10-10 04:30:41 · 2 answers · asked by chrizzle08 2 in Mathematics

In theory what would the difference be between linear and perpendicular time? How would it affect humans if we lived in that time?

2007-10-10 04:21:11 · 4 answers · asked by Elizabeth M 2 in Physics

http://i24.tinypic.com/2dj9cti.jpg

C, D are points on the semicircle diameter AB, center O.
CD meets the line AB at M.
The circumcircles of AOC and DOB meet again at K.

Prove that angle MKO is right angle.

2007-10-10 04:15:14 · 6 answers · asked by Anonymous in Mathematics

2007-10-10 04:13:42 · 4 answers · asked by pookie 1 in Earth Sciences & Geology

i heard piano, and i heard violen

2007-10-10 04:12:23 · 6 answers · asked by lvbl123456 1 in Other - Science

I am confused as to what to do on this problem. Could someone help me? Thanks!

A 67.8 g ball is dropped from a height of 67.3 cm above a sprin of negligible mass. The ball compresses the spring to a maximum displacement of 4.76386 cm. The acceleration of gravity is 9.8 m/s^2. Calculate the spring force constant k. Answer in units of N/m.

2007-10-10 04:09:41 · 3 answers · asked by sg88 1 in Physics

I have heard people say that time doesn't exist because time is a man made idea, now there is time because it can be measured, if something be preceived and it's effects can be measured then it exists, the passage of time can be seen all around us, if there was not time then there would be no seasons because nothing would change, so how can people say time doesn't exist i only ask because i have asked questions about time before with my other account and a lot of people have said that time doesn't exist.

2007-10-10 04:09:39 · 5 answers · asked by Anonymous in Astronomy & Space