[Selected]: All categories ➔ Science & Mathematics
Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology
A student drops a stone into a well and hears the sound of the splash 5.0 s later. How deep is the well? The velocity of sound is 331 m/s.
2007-10-14 05:31:06 · 3 answers · asked by Anonymous in Physics
I cannot tickle myself. Can you?
2007-10-14 05:29:42 · 4 answers · asked by BMW M5 3 in Biology
please help, urgent!
2007-10-14 05:26:05 · 5 answers · asked by slash_rocks s 2 in Mathematics
What equipment is needed for a manual weather station, automated weather station, weather web cams and a satellite weather imagery?
What kind of data is collected from the above?
What are the advantages and disadvantages of the above?
2007-10-14 05:20:20 · 3 answers · asked by Anonymous in Weather
i did the lab to find acceleration by different mehtods
newton law a = T/m
and a= 4pi^2 r*f^2 , r= radius, f= frequency
why my answer is not the same
2007-10-14 05:19:16 · 1 answers · asked by jennifer 2 in Physics
The earth is moving and revolving at great speed .It should be making a loud noise.We don't hear any noise.How is that?
2007-10-14 05:18:55 · 9 answers · asked by Padmini Gopalan 4 in Earth Sciences & Geology
they are part of nature and must have been created for some purpose, but their only function seems to be as an irritant to humans and other creatures. I am an animal lover and am not looking for an ethical debate about this, I simply find myself wondering: what IS the purpose of a fleas existence? What do they do that is actually good? Anything?
2007-10-14 05:16:02 · 4 answers · asked by Z 1 in Zoology
2007-10-14 05:15:42 · 2 answers · asked by Terry A 1 in Zoology
Did the bad experience of same magnitude with appolo 13 also occurred with some other appolo mission? if not what about the common thinking of associating No. 13 with bad luck?
2007-10-14 05:15:31 · 5 answers · asked by d_raza1 3 in Astronomy & Space
...f(x) = (x)sin(4x) has a horizontal tangent line at x=a. Answers correct to three decimal places.
2007-10-14 05:12:36 · 2 answers · asked by eclipsegt_01_03 2 in Mathematics
2007-10-14 05:11:18 · 5 answers · asked by Anonymous in Physics
A mine car, whose mass is 510 kg, rolls at a speed of 0.5 m/s on a horizontal track, as the drawing shows. A 150 kg chunk of coal has a speed of 0.60 m/s when it leaves the chute. Determine the velocity of the car/coal system after the coal has come to rest in the car.
2007-10-14 05:09:13 · 1 answers · asked by Anonymous in Physics
A harmonic wave, has a wavelength λ, a period Τ and an amplitude Α.Find the distance y from the equillibrium , the moment t=Τ/4 and when x=λ/6.
the equation of the y is : y=A*sin[2π(t/T - x/λ)]
heeeelp plz!!!!!!!!!!!!!
2007-10-14 05:08:22 · 1 answers · asked by Joey 1 in Physics
2007-10-14 05:00:51 · 3 answers · asked by Anonymous in Weather
2007-10-14 04:58:34 · 2 answers · asked by RTS 2 in Botany
2x^2 - x - 3 = 0
2007-10-14 04:58:33 · 11 answers · asked by Horsecraz4eva 2 in Mathematics
2007-10-14 04:57:49 · 4 answers · asked by Phresh Princesz ™ 2 in Botany
If you are can I email you because I have a problem my family cant afford to fix. I need just one question answered
2007-10-14 04:57:18 · 2 answers · asked by Jackawoose2002 1 in Medicine
P(x)=2x^3-5x^2-4x+3
find that complete factorization of P
i want to make sure if i did it right please answer it so i can check my answer with yours to see if i did it right please
2007-10-14 04:55:12 · 2 answers · asked by star baller 360 5 in Mathematics
i'm sure it begins with z
2007-10-14 04:52:23 · 9 answers · asked by Rach 2 in Medicine
2007-10-14 04:51:36 · 9 answers · asked by Anonymous in Mathematics
2007-10-14 04:46:51 · 8 answers · asked by chelsea b 1 in Mathematics
2007-10-14 04:43:58 · 3 answers · asked by Anonymous in Physics
A harmonic wave, has a wavelength λ, a period Τ and an amplitude Α.Find the distance y from the equillibrium , the moment t=Τ/4 and when x=λ/6.
the equation of the y is : y=A*sin[2π(t/T - x/λ)]
heeeelp plz!!!!!!!!!!!!!
2007-10-14 04:37:40 · 1 answers · asked by Joey 1 in Physics
True or False?? urgent???
2007-10-14 04:37:38 · 2 answers · asked by navya 1 in Physics
An object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at the same value. Suppose that the radius of the circle is 4.0 m and the angle is is 29°. What is the distance OA?
____
2007-10-14 04:34:52 · 3 answers · asked by Santina E 1 in Physics
2007-10-14 04:30:44 · 3 answers · asked by pinnamraju j 1 in Weather
Would it be earth?
2007-10-14 04:26:14 · 4 answers · asked by Anonymous in Physics
Thermal decomposition of 3.0 metric tons of limestone to lime and carbon dioxide requires 5.4 106 kJ of heat. Convert this energy to each of the following units.
(a) joules
J
(b) calories
cal
(c) British thermal units
Btu
2007-10-14 04:24:15 · 2 answers · asked by jnester0289 1 in Physics
What is the change in internal energy (in J) of a system that absorbs 0.786 kJ of heat from its surroundings and has 0.311 kcal of work done on it?
2007-10-14 04:23:13 · 1 answers · asked by jnester0289 1 in Physics
Questions asked on 14 October 2007:
Showing 541 to 570 of 635 questions
Questions asked on other days: