Science Homework Help

Is it cooler when the air is closer to the ground?My son is learning about air and he needs to know if air is coller ot hotter when it is...

Posted by gpicard April 29, 2011 at 5:47 AM via web. Be the first to answer. »

How do you get past a ligtspeed system internet block?

Posted by cougarjohn April 29, 2011 at 12:58 AM via web. Be the first to answer. »

when and who discovered the sierra madera astrobleme?The sierra madera astrobleme is a meteorite crater in southwestern Pecos County, Texas,...

Posted by joseh233 April 28, 2011 at 11:09 PM via web. Be the first to answer. »

Calculate the concentration for the gases at equilibrium help please?Methane, ethyne, and hydrogen form the following equilibrium mixture....

Posted by jamie523 April 28, 2011 at 2:58 PM via web. 1 educator answer. »

Computer Graphics helpWhat are the steps for table translation and rotation transformations?

Posted by student218 April 28, 2011 at 11:58 AM via web. Be the first to answer. »

Please explain Artificial selection, it's history and benefits to humans, preferably with specific referral to selection of Race Horses-...

Posted by soph727 April 28, 2011 at 10:50 AM via web. Be the first to answer. »

If a 10" diameter pipe has an 50lb pressure applied at one end, forcing liquid through a 3/16" diameter outlet, can force, vel....

Posted by offkiltered1 April 28, 2011 at 3:37 AM via web. Be the first to answer. »

What happens to a ray of light when it goes from air to water at an angle.

Posted by hockeyman18 April 28, 2011 at 3:28 AM via web. 2 educator answers. »

What happens during meiosis that would allow genes located on the same chromosome to separate independently of one another?

Posted by duafarag April 28, 2011 at 1:54 AM via web. 1 educator answer. »

Why should you choose a physical therapist courseexplain

Posted by jelai ni April 28, 2011 at 1:43 AM via web. 2 educator answers. »

How can you tell if the molecule is ionic or covalent?Does an ionic compound HAVE to have a metal? and if the molecule has a metal does it...

Posted by hannahbannna April 27, 2011 at 3:05 PM via web. Be the first to answer. »

What causes some reactions to be exothermic while others are endothermic?

Posted by berbs April 27, 2011 at 11:15 AM via web. 1 educator answer. »

What makes an atom stable? When is its nucleus stable and when does it have electronic stability?

Posted by berbs April 27, 2011 at 11:13 AM via web. 1 educator answer. »

According to collision theory, what are the requirements for a reaction to occur?

Posted by masterchris59 April 27, 2011 at 9:38 AM via web. Be the first to answer. »

Why are reaction mechanisms a necessary part of the collision theory model?

Posted by codyjackson April 27, 2011 at 9:28 AM via web. Be the first to answer. »

What is the answer to the following problem?You in a race. Yoou need to pick up a basketball, go through a door, climb up a rope, and drop...

Posted by steven13 April 27, 2011 at 7:36 AM via web. 1 educator answer. »

I have questions in regards to this article http://www.csicop.org/si/show/science_and_pseudoscience_in_adult_nutrition_research_and_practice/...

Posted by ashifs April 27, 2011 at 4:56 AM via web. 1 educator answer. »

If light is a form of energy, explain how light can be different colours.  thx.

Posted by hockeyman18 April 27, 2011 at 3:15 AM via web. 1 educator answer. »

Hi, I am researching about obssessive compulsive disorder and its relation to the neurotranmitter serotonin.I know that patients with OCD...

Posted by love3921 April 27, 2011 at 2:51 AM via web. 1 educator answer. »

I would like to find some examples of soluble and insoluble fiber.

Posted by joellle April 27, 2011 at 2:36 AM via web. 1 educator answer. »

Wrench A is 12 cm long and wrench B is 24 cm long. How does max torque of wrench A compare to the max torque of wrench B?

Posted by duafarag April 27, 2011 at 12:24 AM via web. 1 educator answer. »

I am looking for nutrients that directly enhance immunity.

Posted by joellle April 27, 2011 at 12:17 AM via web. 1 educator answer. »

Can someone tell me the difference between Serotonin and Melatonin please?I have to know the difference between Serotonin and Melatonin for...

Posted by joellle April 27, 2011 at 12:00 AM via web. 1 educator answer. »

What is "Lyme Disease"?

Posted by natalyap12 April 26, 2011 at 10:22 PM via web. 1 educator answer. »

What is "Lymphocytic Choriomeningitis"?

Posted by sarahh10 April 26, 2011 at 10:20 PM via web. 1 educator answer. »

what is the floral formula of hibuscuss flower and its floral diagram?

Posted by kavitamahra April 26, 2011 at 9:37 PM via web. Be the first to answer. »

what is the important of lifespan development?  

Posted by arini April 26, 2011 at 7:24 PM via web. Be the first to answer. »

explain why oxidation reactions are important to cell

Posted by tolu4becky April 26, 2011 at 11:15 AM via web. Be the first to answer. »

 Hi, I need a cool and awesome title for my science fair project " Do white candles burn faster than colored candles?    Thx

Posted by sweetcakers April 26, 2011 at 10:29 AM via web. Be the first to answer. »

Determine the magnitude and direction of the gravitational force exerted (a) on the moon by earth and (b) on earth by moon.Earth's mass: 5.98...

Posted by islnds April 26, 2011 at 6:55 AM via web. 1 educator answer. »

How many and which are the types of molecular forces?

Posted by cenicienta April 26, 2011 at 5:54 AM via web. 1 educator answer. »

Any suggestion??!! Need your help guys!!I'll write the question:- Please choose a project based on water. You may choose a topic from the list...

Posted by coolnoda April 26, 2011 at 5:23 AM via web. 2 educator answers. »

Suppose two people pull a sled. A pushes the sled with 503N(forward); B,with 496N (forward).?Taking that the sled accelerates at 4.00m/s^2,...

Posted by angelsings April 26, 2011 at 5:14 AM via web. Be the first to answer. »

How to treat biliary dyskinesia?

Posted by pengui April 26, 2011 at 2:28 AM via web. Be the first to answer. »

sun destroys 40million tonnes of matter in 1 second!sun should not be in exsistance how is it possibleif sun destroyes such a huge amount of...

Posted by anwarhussain April 26, 2011 at 12:29 AM via web. 1 educator answer. »

The flywheel of a gasoline engine is required to give up 550J of kinetic energyThe flywheel of a gasoline engine is required to give up 550J...

Posted by saleemllah April 25, 2011 at 4:43 PM via web. Be the first to answer. »

whether ripe pods of Leptadenia pyrotechnica(forskk) Decne. may be used to produce medicines and bio-fuels?  Persual of the available...

Posted by prahladraivyas April 25, 2011 at 1:22 PM via web. Be the first to answer. »

Why water's O to H bonds are so highly polar?

Posted by cenicienta April 25, 2011 at 8:39 AM via web. 1 educator answer. »

What are secondary sex characteristics?What is the 2nd sex characteristic??

Posted by laslimchata April 25, 2011 at 8:16 AM via web. 1 educator answer. »

Who is the first person to apply the principles of forensic science to a working crime lab?

Posted by krystan April 25, 2011 at 5:04 AM via web. 1 educator answer. »

Is an animal an insect? Why or why not?

Posted by spoochie April 25, 2011 at 3:12 AM via web. 1 educator answer. »

The average amount of precipitation in Dallas,during April, is 3.5 inches with a std deviation of 0.8 inches,assuming rainfall is distributed...

Posted by pranavkulkarni1 April 25, 2011 at 2:40 AM via web. Be the first to answer. »

Is propylene an alkene? Does this mean it has a double bond? Is it an alkyl group? 

Posted by berbs April 25, 2011 at 1:14 AM via web. 1 educator answer. »

What is wind?

Posted by tink20309 April 25, 2011 at 1:10 AM via web. 1 educator answer. »

what are the properties,occurrence,and uses of lamp black, sugar charcoal  and bone charcoal

Posted by bloom25 April 24, 2011 at 4:57 PM via web. Be the first to answer. »

The flywheel of a gasoline engine is required to give up 550J of kinetic energy while its angular velocity decreases from 790 rev/min to...

Posted by spunkykhan April 24, 2011 at 3:26 PM via web. Be the first to answer. »

From a workplace settings and knowledge of medical ethics and the values, show how the values were contravenedPutting the project together

Posted by liz1991 April 24, 2011 at 11:27 AM via web. Be the first to answer. »

How is the electronegativity difference used in determining the type of bond that occurs between two atoms?If the difference is between 0 and...

Posted by hannahbannna April 23, 2011 at 3:32 PM via web. Be the first to answer. »

Does work=potential energy?  Please explain the formula work= negative potential energy.  Does this mean negative work=positive potential...

Posted by berbs April 23, 2011 at 7:20 AM via web. 1 educator answer. »

tiny pits 10-7m deep.pits arranged in a track that spirals outward toward rim of the disc;inner and outer radii of this spiral are 20.0mm and...

Posted by spunkykhan April 22, 2011 at 9:18 PM via web. Be the first to answer. »