Science & Mathematics - 23 September 2007

2007-09-23 09:10:55 · 5 answers · asked by Anonymous in Mathematics

HELPPP PLEASEE NOWWWW

2007-09-23 09:10:43 · 5 answers · asked by Shawn Carter 1 in Physics

2007-09-23 09:10:02 · 3 answers · asked by Anonymous in Geography

2007-09-23 09:09:17 · 5 answers · asked by hoticolaura 1 in Astronomy & Space

Like when you go to the beach and you accidentily swallow some of the salt water - will it kill you? Or if you eat pretzels and drink water... Im paranoid because im eating pretzels and drinking water and like if 1 salt crystal from the pretzels got in my water and i drink it, will i die?

2007-09-23 09:05:25 · 20 answers · asked by ? 3 in Medicine

2007-09-23 09:04:13 · 6 answers · asked by damigurl05 1 in Biology

. A surveyor stands on flat ground at an unknown distance from a tall building. She
measures the angle from the horizontal ground to the top of the building; this angle is π/3.
Next she paces 40 feet further away from the building. The angle from the ground to the
top of the building is now measured to be π/4.
a) How tall is the building?
b) If the surveyor moves 20 feet further away from the building, what will be the angle
from the horizontal ground to the top of the building

2007-09-23 09:03:15 · 2 answers · asked by Anonymous in Mathematics

r = 1/2 ( r1 + r2 ) for r2
p = 2L + 2w for e

2007-09-23 08:59:27 · 3 answers · asked by zak 2 in Mathematics

0.050kg mass moves on the end of a spring with k=25 N/m and is acted on by a damping force F=-bv. It is initially displaces at 0.3 m and the amplitude decreases to 0.1 m in 5 sec. What is magnitude of damping constant b?

2007-09-23 08:59:08 · 1 answers · asked by coo1mints 3 in Physics

2007-09-23 08:57:30 · 7 answers · asked by Derek A T 1 in Physics

2007-09-23 08:56:48 · 11 answers · asked by Anonymous in Mathematics

Find the curvature k(t) of the curve

r(t) = (-3 sin t)i + (-3 sin t)j + (2 cos t)k


Thanks to anyone in advance

2007-09-23 08:52:35 · 1 answers · asked by Anonymous in Mathematics

91,90,90,88,88,86,87 do you add them all together and then divide by 7?

2007-09-23 08:52:19 · 12 answers · asked by Min 1 in Mathematics

Tin metal and nitric acid...produtcs are a solid, a tin oxide and a brown gas, nitrogen oxide

2007-09-23 08:51:54 · 2 answers · asked by racer x 1 in Chemistry

1) List all the non-empty proper subsets of the set W= {a, {a,b}, Θ}

2) If U= {1,2,3,...20} and A= {2,4,6,...20} find n(A')

3) The number of proper subsets of H is 524,287. What is the n(H)?

2007-09-23 08:50:58 · 5 answers · asked by Anonymous in Mathematics

For instance a welder can have a 200 amp output at 18 volts, but has an input at 20 amps and 240 volts, making wattage input 4800 and output 3600. What explains that loss in wattage?

2007-09-23 08:50:40 · 6 answers · asked by Brad 1 in Engineering

http://www.crunchyroll.com/user/babiixjen_x3/photos/2460904
i used sin
sin 35 degrees = x/19
i got 10.8, which makes it 11 degrees

2007-09-23 08:43:51 · 1 answers · asked by Anonymous in Mathematics

did some species stop evolving thousands of years ago, while others continued? If the dinosaurs hadn't been wiped out suddenly, what would they have evolved into? Educated answers only please!

2007-09-23 08:41:04 · 10 answers · asked by Anonymous in Other - Science

how do you find a diameter if you have a circumfrence of 40

2007-09-23 08:39:27 · 10 answers · asked by jenna m 1 in Mathematics

temperature on a hot summer's day: 10 degrees Celsuis? 20 degrees C? 30 degrees C?
Room temperature: 0 degrees degrees Celsius? 10 degrees C? 20 degrees C?

2007-09-23 08:39:07 · 3 answers · asked by lifeeeisgood 2 in Chemistry

log[base2](3x+2) - log[base2](x-2) = 3

when i did the quotient law i got

log[base2](3x+2) / (x-2) = 3 ...............whats the next step?

2007-09-23 08:38:18 · 2 answers · asked by C.L. ~Raptors~ 4 in Mathematics

Elemental phosphorus occurs as tetratomic molecules, P4. What mass of chlorine gas is needed for complete reaction with 375 g phosphorus to form phosphorus pentachloride?

2007-09-23 08:36:09 · 3 answers · asked by neena m 1 in Chemistry

Do you agree or disagree. Why or why not?

2007-09-23 08:33:47 · 6 answers · asked by bumblebee 4 in Biology

i have forgotten how to do functions so could anyone tell me how to do this

f(x) = x^2 - a and g(x) = ax - 2 where a is a constant

given that f(2) = g(2), find the value of a?

do i sub in 2 then equate to 0? thanks for any help and solutions you get

2007-09-23 08:31:43 · 4 answers · asked by AP12 2 in Mathematics

2007-09-23 08:31:10 · 6 answers · asked by chuilatin 1 in Mathematics

Jean, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from the airport. She notices that the string makes an angle of 24° with respect to the vertical while the aircraft accelerates for takeoff, which takes about 17 seconds. Estimate the takeoff speed of the aircraft.

=..............m/s

2007-09-23 08:30:41 · 3 answers · asked by Nikita 1 in Physics

which can also cause intestinal cramping and flatuence and the avoidance of dairy products

2007-09-23 08:29:59 · 4 answers · asked by damigurl05 1 in Medicine

2007-09-23 08:29:17 · 2 answers · asked by Anonymous in Chemistry

2007-09-23 08:27:42 · 2 answers · asked by Anonymous in Chemistry

mars, saturn, venus, etc,

2007-09-23 08:27:23 · 6 answers · asked by Petarded 1 in Astronomy & Space