Wednesday
April 23, 2014

Homework Help: Science

Branches of Science

Recent Science Questions

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science
If the atmosphere gets thinner, what do you think happens to the air pressure outside the airplane?
Friday, March 28, 2014 at 4:49pm

science
can any of you tell me some good information about wind energy
Friday, March 28, 2014 at 4:39pm

Science
7. Coal 11. C 13. A
Friday, March 28, 2014 at 4:22pm

Science
7, 11, 13 are wrong. The others are right.
Friday, March 28, 2014 at 3:50pm

science
http://www.eia.gov/kids/energy.cfm?page=​solar_home-basics http://www.sciencekids.co.nz/sciencefact​s/energy/solarpower.html
Friday, March 28, 2014 at 3:46pm

Science
1. Which of the following describes an example of land reclamation? A. After an area is mined for copper, the soil is replaced and new plants are planted <----- B. After a forest is clear-cut, desertification occurs C. After a forest is clear-cut, it is mined for copper D. ...
Friday, March 28, 2014 at 3:42pm

science
can any of you tell me some good information about solar energy
Friday, March 28, 2014 at 3:42pm

Science
Newton's laws are empirical determinants of how gravity operates. Gravity operates regardless of the law. I think I responded to the second question previously. Since this is not my area of expertise, I searched Google under the key words ""Newton's Laws"...
Friday, March 28, 2014 at 2:43pm

Science
Describe how the structure of DNA is correlated with its role as the molecular basis of inheritance in Biology.
Friday, March 28, 2014 at 12:32pm

science(check answers)
Nope.
Friday, March 28, 2014 at 12:15pm

science(check answers)
5.A 6.A 5.The origin of the words shut and out is Old English. During the 1800s, the two words were combined to take on the baseball meaning, a game in which one side does not score. What is the most likely meaning of the word shutout in the story The Shutout? A.to dismiss B....
Friday, March 28, 2014 at 12:00pm

Computer Science
Computers are used worldwide, but most of the major operating systems originated in English-speaking countries. Take a look at the operating system that you use in the context of global users who might not speak English and who might not have grown up with Western customs. ...
Friday, March 28, 2014 at 9:27am

Science URGENT
for second part C6H12O6 Total atoms in 1 molecule = 6 + 12 + 6 = 24 2C6H12O6 6 carbon atoms, 12 helium atoms, and 6 oxygen atoms then you have 24 atoms times the 2 at the beginning making 48 atoms
Friday, March 28, 2014 at 12:05am

Science URGENT
Hey MAD 2 Hydrogen atoms + 1 oxygen atom = H2o 3H2O : 9 atoms 5H2O = 15 atoms
Thursday, March 27, 2014 at 11:54pm

Statistics
For the most recent seven years, the U.S. Department of Education reported the following number of bachelor's degrees awarded in computer science: 4,253; 5,578; 6,406; 7,334; 8,728; 11,298; 15,182. What is the annual arithmetic mean number of degrees awarded? About 9,120 ...
Thursday, March 27, 2014 at 11:50pm

Science URGENT
Write down the number of hydrogen and oxygen atoms of the following H2O 3H2O 5H2O Write down the number of carbon, hydrogen and oxygen atoms: C6H12O6 2C6H12O6 10C6H12O6 Write down the number of molybdenum, oxygen and hydrogen atoms: Mo(OH)4 3Mo(OH)4 5Mo(OH)4 Write the Number ...
Thursday, March 27, 2014 at 11:20pm

Statistics
For the most recent seven years, the U.S. Department of Education reported the following number of bachelor's degrees awarded in computer science: 4,253; 5,578; 6,406; 7,334; 8,728; 11,298; 15,182. What is the annual arithmetic mean number of degrees awarded? About 9,120 ...
Thursday, March 27, 2014 at 10:11pm

science
distance = speed * time same time, higher speed --> bigger distance
Thursday, March 27, 2014 at 9:36pm

science
the distance a car travels between the time the driver decides to stop the car and the time the driver puts on his brake is called the reaction distance how does the reaction distance change with speed
Thursday, March 27, 2014 at 9:33pm

Physical Science 9
It was highly influential to the world of science and it forever changed the way that we look at atoms. Without this research we would basically be in the dark and clueless but thanks to him we have a better understanding of the atomic model today.
Thursday, March 27, 2014 at 7:58pm

Physical science
See Related Questions: Wed,9-25-13,3:20 PM.
Thursday, March 27, 2014 at 4:41pm

8th grade science
I am not aloud to use that website you had. Do you have any other sites that I may be able to use?
Thursday, March 27, 2014 at 4:29pm

enviromental science
http://en.wikipedia.org/wiki/Native_plan​t
Thursday, March 27, 2014 at 3:07pm

enviromental science
Please note that no one here will do your work for you. However, we will be happy to read over what YOU THINK and make suggestions and/or corrections. Please post what you think.
Thursday, March 27, 2014 at 3:03pm

eviromental science
Using two or three well-developed paragraphs, explain how temperature and precipitation determine which plants grow within an area and give an example.
Thursday, March 27, 2014 at 2:54pm

science plz help right now!!!!
they are all right Elena. Good Job!
Thursday, March 27, 2014 at 2:32pm

science plz help right now!!!!
1.B 2.D 3.C 4.D 5.C 6.B 7.D 8.B
Thursday, March 27, 2014 at 2:30pm

science
an you please solve the questions for me 1. 3 moles of pesticide of molecular mass 200 g/mole is applied to a closed system consisting of 20 m3 of water, 10 m3 of air, 1 m3 of sediment, and 0.001 m3 of fish. Determine the concentration and amount in both grams and mole units ...
Thursday, March 27, 2014 at 2:24pm

science
3 moles of pesticide of molecular mass 200 g/mole is applied to a closed system consisting of 20 m3 of water, 10 m3 of air, 1 m3 of sediment, and 0.001 m3 of fish. Determine the concentration and amount in both grams and mole units in air, water, sediment and fish in ...
Thursday, March 27, 2014 at 1:41pm

science- Physics
Two electrons start at rest with a seperation of 5e-12 metres. Once released, the electrons accerelate away from each other. Calculate the speed of each electron when they are a very large distance apart.
Thursday, March 27, 2014 at 12:24am

science
A 3.5-cm tall object is placed 10.0 cm in front of a concave mirror having a focal length of 14.5 cm. Find the location position and height by drawing a ray diagram to scale. Verify your answer using the mirror and magnification equations. cm (location) cm (height)
Wednesday, March 26, 2014 at 10:56pm

Science
You're welcome, Raquel.
Wednesday, March 26, 2014 at 9:15pm

Science
Thank you very much Ms. Sue
Wednesday, March 26, 2014 at 9:03pm

Science
Thank you very much Alyssa.
Wednesday, March 26, 2014 at 9:01pm

Science
http://schools.bcsd.com/fremont/4th_sci_​life_eco_desert.htm http://forestry.about.com/od/environment​alissues/a/forest_ecosystem.htm
Wednesday, March 26, 2014 at 8:59pm

Science
Different climates and enviornments all together. A desert has very little water, so all the plants and animals are adpated to such conditions ex: cactus. What animals come to mind in the desert are mostly cold blooded reptiles. Forest ecosystems on the other hand, have just ...
Wednesday, March 26, 2014 at 8:54pm

Science
Compare and contrast a desert ecosystem and a forest ecosystem.
Wednesday, March 26, 2014 at 8:44pm

Science
Without newtons second law would there be gravity on earth??????? Help!!! And also how are newtons second and third laws of motion important to your everyday life?
Wednesday, March 26, 2014 at 8:21pm

Physical science
An astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronaut's mass is 100kg. He takes a 1kg "safety weight" and shoves it away in exactly the direction of his motion at a speed of 6m/s. at what speed does the ...
Wednesday, March 26, 2014 at 7:40pm

Science
If an astronaut could hop 40 cm high on Jupiter, how high could he or she jump on earth? On the moon? Please help me fast I have a bunch of questions over this and I have no idea what this even means
Wednesday, March 26, 2014 at 7:21pm

english essay
Ofcourse, I know Science and Chemistry are not issues but I want to know an issue related to this particular subject.I do not If you understood or not.
Wednesday, March 26, 2014 at 6:26pm

global warming science
1a (5 points possible) A schematic of a two layer model of the Earth-atmosphere energy balance is shown in the image below. The atmosphere is assumed to be transparent to solar radiation, and the total solar radiation absorbed by the surface is written in terms of the ...
Wednesday, March 26, 2014 at 6:16pm

english essay
What is the ISSUE? Science, Chemistry, and nature are not ISSUES. Example: Science Issue..Carbon dioxide is pouring into the atmosphere, causing climate change.
Wednesday, March 26, 2014 at 6:12pm

science
net ionic? Ca++ + SO4-- > CaSO4
Wednesday, March 26, 2014 at 6:10pm

english essay
* I need help writing research essay. The topic is to write about an issue or problem that you want to change. Well, I am mostly interested in Science, particularly Chemistry and Nature.
Wednesday, March 26, 2014 at 6:09pm

science
Na2SO4(aq)+CaI2(aq)→CaSO4(s)+2NaI(​aq) as net ionic
Wednesday, March 26, 2014 at 2:39pm

PHYSICAL SCIENCE
An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density?
Wednesday, March 26, 2014 at 2:23pm

Science (?)
What is a "shake up toy"?
Wednesday, March 26, 2014 at 12:00pm

Science
Since this is not my area of expertise, I searched Google under the key words ""Newton's Laws" "everyday life"" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=%22Newton's+Laws%22+%22​...
Wednesday, March 26, 2014 at 11:56am

7th grade science
sperm
Wednesday, March 26, 2014 at 11:43am

science(check answers)
Its C lol
Wednesday, March 26, 2014 at 11:31am

science
H2O2(g)+2CO(g) ----> H2(g)+2CO2(g) so ?
Wednesday, March 26, 2014 at 7:30am

science
H2O2(g)+2CO(g)¨H2(g)+2CO2(g)
Wednesday, March 26, 2014 at 7:08am

Life science, business and maths literacy
my name is amanda and am doing grade 12 at school am doing business,life sciences,geography and maths lit so what i want to know is the career that is suitable for these subjects
Wednesday, March 26, 2014 at 5:27am

Life.science
in the moss why the sporophyte is sometimes referred to as a semi parasite.
Wednesday, March 26, 2014 at 2:31am

Physical science
A man loads 1000 sacks of flour into a truck in 30.0 minutes. Each sack has a mass of 20.0kg and the man must lift each sack 1.00m from a cart up onto the truck bed. how much power did the man develop?
Wednesday, March 26, 2014 at 12:57am

Science
PLEASE HELP !!!!! how are newtons second and third laws of motion important to your everyday life?
Tuesday, March 25, 2014 at 11:33pm

Science asap thankies :)
Was it a ferromagnet? They exhibit ferromagnetism which in Fe, Ni, and Co are examples.
Tuesday, March 25, 2014 at 11:17pm

Science asap thankies :)
What would a permanently magnetic substance be called? I cant remember what my teacher called it, it was a short first word then magnet.. sorry and thanks!
Tuesday, March 25, 2014 at 10:39pm

science
As you airplane taker off from an airstrip on the ground and rises 30,000 feet into the sky what happens to the air pressure on the outside of the airplane ? Answers are Air pressure decreases Air pressure increases Air pressure stays same more information is needed
Tuesday, March 25, 2014 at 9:02pm

Chemistry - Science
Thank you!
Tuesday, March 25, 2014 at 7:20pm

Chemistry - Science (Dr. Bob222)
I've worked this below.
Tuesday, March 25, 2014 at 7:11pm

Chemistry - Science
Ag^+ + Cl^- ==> AgCl mols AgCl = grams/molar mass =? ? mol AgCl = mols Cl^- = mols Ag^+ = mols AgNO3. g AgNO3 = mols AgNO3 x molar mass AgNO3 %AgNO3 = (g AgNO3/mass sample)*100 = ?
Tuesday, March 25, 2014 at 7:10pm

Chemistry - Science (Dr. Bob222)
A student wanted to determine the amount of copper in a sample of copper ore. The student dissolved a 2.500 ± 0.001 g piece of copper ore in about 75 mL of nitric acid; then, a complexing agent was added. The student transferred this solution to a volumetric flask and ...
Tuesday, March 25, 2014 at 6:38pm

Chemistry - Science
A 6.70 g sample of a binary mixture of silver (I) nitrate and sodium nitrate is completely dissolved in water to make a solution. Aqueous barium chloride is then added to this solution in excess to form 3.60 g of silver chloride solid. What is the percent by mass of silver ...
Tuesday, March 25, 2014 at 6:28pm

Science
None
Tuesday, March 25, 2014 at 5:24pm

Science
The force of gravity on Jupiter is much stronger than the force of gravity on Earth. Which of the following explains why this is true?
Tuesday, March 25, 2014 at 5:24pm

College Gen. Chemistry - Science
Dear Dr Bob222, Thank you so much! The answer is 35.5 mL on H2O has evaporated.
Tuesday, March 25, 2014 at 5:22pm

science
metals
Tuesday, March 25, 2014 at 5:20pm

Science
Ricco mixed up 500 cc of salt solution. He weighed it and found it's mass to be 585 g. Will his shake up toy work the way he wants it to if he uses this salt solution? Why or why not? Remember, 1 ml= 1 cc show your math
Tuesday, March 25, 2014 at 5:11pm

College Gen. Chemistry - Science
So how many mols did you have to start? That's mols = M x L = 0.120 x 0.245 = 0.0294. When some of the water has evaporated you know you still have 0.0294 mols there. And the molarity now is 0.348M and not 0.245M. So M = mols/L. M = 0.348; mols = 0.0294. Solve for L of ...
Tuesday, March 25, 2014 at 4:55pm

College Gen. Chemistry - Science
You have 120.0 mL of a 0.245 M solution of NaCl in an open beaker. After several days, you test the solution and find that it now has a concentration of 0.348 M. How much water must have evaporated from the beaker given the new concentration?
Tuesday, March 25, 2014 at 4:47pm

Mathematics lit, physical science, life science. Geography and englsh ,sepedi and l.o
What career do you want?
Tuesday, March 25, 2014 at 3:40pm

Mathematics lit, physical science, life science. Geography and englsh ,sepedi and l.o
What career m i qualify for it ?and where? And hw much m i g0ing to earn?? N how long it wil take me to learn??
Tuesday, March 25, 2014 at 3:38pm

Space Science
b
Tuesday, March 25, 2014 at 2:45pm

EARTH SCIENCE
idk
Tuesday, March 25, 2014 at 2:35pm

physical Science
6,451 calories
Tuesday, March 25, 2014 at 12:03pm

science
At 0 Hz, the capacitor has high impedance At high Hz, the inductor has high impedance The circuit's impedance reaches a minimum at the resonant frequency of the LC portion. The resistor keeps it from ever being zero, to protect the voltage source.
Tuesday, March 25, 2014 at 11:42am

Science 4
true
Tuesday, March 25, 2014 at 11:33am

science
what would happen to the impedance of a series circuit containing an inductor, capacitor and resistor if the supply frequency is varied from 0 to infinity Hz
Tuesday, March 25, 2014 at 8:42am

Engineering Science
If a helical tension spring consisting of 12 live coils of ¼ inch steel wire and of 1 ¼ inch mean diameter is attached to the end of another helical tension spring of 18 live coils of ¼ inch steel wire and of 1 ¾ inch mean diameter, calculate the ...
Tuesday, March 25, 2014 at 4:16am

Science
Which element would be most reactive? a. Al b. Cl c. P d. Na I initially thought that the answer was B, but I'm not sure about it. My second question is... Which non-metal is most reactive? a. Cl b. F c. I d. S I'm not sure about the answer for this one since all of ...
Monday, March 24, 2014 at 7:55pm

science
And your answers are??
Monday, March 24, 2014 at 6:17pm

science
True or False: One of the skin’s functions is to produce vitamin D (1 point) True False 2. Your _____ is the largest organ of your body. (1 point) brain large intestine skin lungs 3. The _____ is the outer, thinnest layer of your skin. (1 point) fatty layer epidermis hair...
Monday, March 24, 2014 at 6:05pm

science question?
You are welcome.
Monday, March 24, 2014 at 3:34pm

science question?
* jobs created in building, maintaining and managing the facility. * energy money saved by residents and businesses is available for investment. however there can be negatives * negative impact on view and tourist income * negative impact on industries that need the space (...
Monday, March 24, 2014 at 3:33pm

science question?
can someone explain to me?? can someone explain the economic impact of wind energy on an area
Monday, March 24, 2014 at 3:26pm

science question?
thanks
Monday, March 24, 2014 at 3:24pm

science question?
It blows harder and more steadily in some places than others.
Monday, March 24, 2014 at 3:16pm

science question?
can someone explain this to me what does location has to do with wind energy availability
Monday, March 24, 2014 at 3:15pm

science
http://wiki.answers.com/Q/What_are_the_d​ifferences_between_the_different_types_o​f_mountains?#slide=23 d
Monday, March 24, 2014 at 2:44pm

science
mountains that are formed between two large faults are known as a. seamounts b. uplifted mountains c. plateaus d. fault-block mountains
Monday, March 24, 2014 at 2:32pm

science HELP ASAP!!!!!!!
I need help with those!
Monday, March 24, 2014 at 1:46pm

science HELP ASAP!!!!!!!
Please I need those answers tooo!!!
Monday, March 24, 2014 at 1:46pm

science HELP ASAP!!!!!!!
Please, I need help with the same questions!
Monday, March 24, 2014 at 1:45pm

Business & Economics
For the most recent seven years, the U.S. Department of Education reported the following number of bachelor's degrees awarded in computer science: 4,033; 5,652; 6,407; 7,201; 8,719; 11,154; 15,121. What is the annual arithmetic mean number of degrees awarded? About 12,240 ...
Monday, March 24, 2014 at 1:22pm

Science
None.
Monday, March 24, 2014 at 11:08am

Science
Which statement summarizes water quality issues in China
Monday, March 24, 2014 at 10:45am

science
B Sedimentary
Monday, March 24, 2014 at 9:50am

computer science
a) What is the largest positive number that can be represented in 12 bits using one’s complement? Represent the number in bits and decimal as well. Assume the first bit is the sign bit. (2 marks)
Sunday, March 23, 2014 at 11:47pm

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