Saturday
April 19, 2014

Homework Help: Science

Branches of Science

Recent Science Questions

Post a New Question | Current Questions

science(check answers)
Check what answers??
Thursday, April 3, 2014 at 4:45pm

science(check answers)
60 kg cheetah reaches a speed of 30 m/s when chasing its prey
Thursday, April 3, 2014 at 4:37pm

science(check answers)
im the one who needs help not give help
Thursday, April 3, 2014 at 4:36pm

physical science
To keep UV rays from damaging the skin and eyes.
Thursday, April 3, 2014 at 4:26pm

physical science
Ozone absorbs most of the UV light from the sun; thus, ozone effectively blocks the UV-B rays from striking the earth.
Thursday, April 3, 2014 at 4:25pm

science
A 2.1-kg brick is placed gently upon a 2.9-kg cart originally moving with a speed of 26 cm/s. Determine the post-collision speed of the combination of brick and cart.
Thursday, April 3, 2014 at 3:40pm

science
I bet I would brag on the microscope.
Thursday, April 3, 2014 at 3:22pm

science
Imagine that you are the scientist who discovered cells. If you were to give a speech to a group of fellow scientists, what key points would you include that describe your accomplishments?
Thursday, April 3, 2014 at 2:27pm

science
1.b 2.a,b 3.a,c,e 4.c 5.b,a,d 6.a,b 7.b 8.d 9.c 10.a PLEASSSE CHECK MY ANSWERS IF I DONT GET AN 100 ON THIS TEST MY DAD WILL SELL ALL MY STUFF! PLLLEEASSSE HELP ME!
Thursday, April 3, 2014 at 1:56pm

Science - Check my answers
1. Which of the following statements best defines tides? when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours **** the rise of ocean water that occurs 12 times a day a giant wave that can be extremely ...
Thursday, April 3, 2014 at 1:21pm

science
We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though. Also, we do not have the diagrams available.
Thursday, April 3, 2014 at 1:15pm

science
To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of ____________________ ...
Thursday, April 3, 2014 at 1:07pm

science
1. Why is the periodic table usually drawn with hydrogen (H) separated from the rest of the elements? 2. Finely ground sane can be poured like water. Why is sand considered a solid rather than a liquid? How is sand different than liquids?
Thursday, April 3, 2014 at 12:51pm

Science
To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of ____________________ ...
Thursday, April 3, 2014 at 11:46am

science
1.   Which is most likely to be part of an ionic bond?  (1 point) an atom with no valence electrons an atom with one valence electron an atom with two valence electrons an atom with three valence electrons 2.   To form an oxygen molecule (O2), two...
Thursday, April 3, 2014 at 11:28am

environmental science
helped to create and retain Earth's atmosphere
Thursday, April 3, 2014 at 10:48am

Science help
These are all correct!!!
Thursday, April 3, 2014 at 10:39am

science
Finely ground sane can be poured like water. Why is sand considered a solid rather than a liquid? How is sand different than liquids?
Thursday, April 3, 2014 at 10:25am

science
1. Why is the periodic table usually drawn with hydrogen (H) separated from the rest of the elements?
Thursday, April 3, 2014 at 10:24am

science
PLEASE HELP GUYS An ideal gas for which Cv = 3R/2 is the working substance of a Carnot engine. During the isothermal expansion, the volume doubles. The ratio of the final volume to the initial volume in the adiabatic expansion is 5.7. The work output of the engine is 9 x 105 J...
Thursday, April 3, 2014 at 9:44am

science
An ideal gas for which Cv = 3R/2 is the working substance of a Carnot engine. During the isothermal expansion, the volume doubles. The ratio of the final volume to the initial volume in the adiabatic expansion is 5.7. The work output of the engine is 9 x 105 J in each cycle. ...
Thursday, April 3, 2014 at 9:43am

Science
a
Thursday, April 3, 2014 at 8:46am

physical science
what is the importance of ozone in the stratosphere for your health?what will happen to us when ozone depletion becomes more serious?
Thursday, April 3, 2014 at 5:22am

physical science
why it is necessary to apply sunscreen to your skin and wear sunglasses when you want sunbathe on the beach?
Thursday, April 3, 2014 at 5:18am

Science (chemistry)
I'm seriously stuck, and it's not like I want the answers, I have done all my other work but these are the questions that have made me stuck and ill really appreciate it if u could do them cause I have to hand this in or I won't be able to do the test tomorow
Thursday, April 3, 2014 at 12:36am

Science (chemistry)
I suppose you could do these if you knew how to do the MgCl2, AgNO3 etc.
Thursday, April 3, 2014 at 12:32am

CAN ANYONE HELP?
I posted my science (chemistry) question and I have received no help and i really need to get this done so can someone please help??
Thursday, April 3, 2014 at 12:29am

Science (chemistry)
Write a balanced chemical equation and state the reaction type for each of the following reactions: a.) nitrogen gas reacts with hydrogen gas forming ammonia (NH3) b.) carbonic acid breaks down to form carbon dioxide gas and water c.) aluminum foil reacts with copper II ...
Wednesday, April 2, 2014 at 11:41pm

SCIENCE? HELP!
2. A 3. Wind erosion. build on that.
Wednesday, April 2, 2014 at 10:32pm

Reading Skills
This question is based on the following paragraph. (1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade ...
Wednesday, April 2, 2014 at 5:51pm

Reading Skills
This question is based on the following paragraph. (1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade ...
Wednesday, April 2, 2014 at 5:30pm

Reading Skills
This question is based on the following paragraph. (1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade ...
Wednesday, April 2, 2014 at 5:26pm

Science
Right.
Wednesday, April 2, 2014 at 3:32pm

Science
An example of a renewable and inexhaustible resource that requires the construction of dams is _________________________ energy. hydroelectric
Wednesday, April 2, 2014 at 3:27pm

Science
Right.
Wednesday, April 2, 2014 at 1:32pm

Science
Geothermal power would be classified as a(n) _____________________ resource because its supply will not run out. renewable
Wednesday, April 2, 2014 at 1:26pm

science question?
343 * 5 = 1,715 meters 1,000 meters = 1 kilometer Divide 1,715 by 1,000
Wednesday, April 2, 2014 at 12:22pm

science question?
can someone explain this to me? When the temperature is 68°F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometers does sound travel in five seconds?
Wednesday, April 2, 2014 at 12:00pm

Science ~CHECK MY WORK PLEASE~
You guys are crazy
Wednesday, April 2, 2014 at 9:25am

computer science
My experience with younger students, to teach them to write is to first teach them to tell stories. Experience in developing cohesive stories, with enhaning descriptive tales, puts them into the mode of development of ideas. once this is mastered, they can now put ideas on ...
Wednesday, April 2, 2014 at 9:11am

computer science
I have no idea what the gobbledegook letters mean, but here are some websites that may help you re teaching children and teenagers how to write good essays. http://www.angelfire.com/wi/writingproce​ss/ http://www.kimskorner4teachertalk.com/wr​iting/menu.html http...
Wednesday, April 2, 2014 at 8:53am

computer science
Developing a habit to write good essays and dissertations can bring lots of accolades from faculty to any student. Does that mean each of the children can be expected to do it with similar success? ItâÃ&ce​nt;‚Â&...
Wednesday, April 2, 2014 at 3:41am

Science
In the temperature forest what are interactions with other organisms
Tuesday, April 1, 2014 at 9:13pm

Science
how does interdependence of organisms within an ecosystem aid survival in a temperate forest
Tuesday, April 1, 2014 at 9:11pm

science
http://www.google.com/webhp?source=searc​h_app#q=diaphragm
Tuesday, April 1, 2014 at 8:22pm

science
what is a diaphragm
Tuesday, April 1, 2014 at 8:14pm

science
http://www.google.com/webhp?source=searc​h_app#q=inclined+plane+work
Tuesday, April 1, 2014 at 7:43pm

english?? science???
.
Tuesday, April 1, 2014 at 7:41pm

science
750W * 1hp/746W = 1.0 hp.
Tuesday, April 1, 2014 at 7:13pm

Science ~CHECK MY WORK PLEASE~
sometimes i f uck n iggers and c um on their f aces
Tuesday, April 1, 2014 at 7:09pm

Science ~CHECK MY WORK PLEASE~
!@#$%^&
Tuesday, April 1, 2014 at 7:06pm

Science
google "wiki lasers"
Tuesday, April 1, 2014 at 6:36pm

Science
How are LASERS produced? Is it a useful daily source of light?
Tuesday, April 1, 2014 at 5:22pm

Science
Solar cells? Since this is not my area of expertise, I searched Google under the key words "capturing sunlight" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=capturing+sunlight&ie=UTF-8​&oe=UTF-8 In the future, you ...
Tuesday, April 1, 2014 at 2:24pm

Science
We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.
Tuesday, April 1, 2014 at 1:43pm

Science
A______________________ is a tool used to capture the energy in sunlight. Recycling aluminum cans and taking shorter showers are two ways to practice the ________________________ of natural resources. Some plastics are made from corn. These plastics are biodegradable. This ...
Tuesday, April 1, 2014 at 12:43pm

Science
I don't understand, which ones did you get wrong?
Tuesday, April 1, 2014 at 10:05am

science
the standard enthalpy of formation of ammonia is -46 kj/mol. if the enthalpy of formation of hydrogen molecule is -436 kj/mol and that of nitrogen molecule is -712 kj/mol find the average bond enthalpy of N-H bond in ammonia
Tuesday, April 1, 2014 at 7:41am

science
A 750w motor might also be rated as a 0.5horsepower motor 1 horsepower motor 2 horsepower motor 10 horsepower motor
Monday, March 31, 2014 at 10:43pm

Physical Science 9
what sequence of process must happen for an atom of carbon to go from a man to a car?
Monday, March 31, 2014 at 10:27pm

Science URGENT
I dont see them posted in public view.
Monday, March 31, 2014 at 9:24pm

Science URGENT
He said he's not giving us the answers and I really need to check my answers all the time but I can't cause the answers don't come with the textbook. And I don't find it fair cause our math text books have the answers so why don't our science texts? But ...
Monday, March 31, 2014 at 9:21pm

Science
I can't find any answers on the web for public.
Monday, March 31, 2014 at 9:19pm

Science URGENT
I think you need to ask your teacher this.
Monday, March 31, 2014 at 9:15pm

Science URGENT
Ignore this question
Monday, March 31, 2014 at 9:14pm

Science
The text book is called BC science probe 10 It's for grade 10
Monday, March 31, 2014 at 9:13pm

Science URGENT
Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers?
Monday, March 31, 2014 at 9:12pm

Science
I might be able to answer this if I had an idea what science probe 10 was.
Monday, March 31, 2014 at 9:12pm

Science
Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers?
Monday, March 31, 2014 at 8:50pm

Science
All correct! Thanks!
Monday, March 31, 2014 at 8:41pm

Life science,english, geography, and maths pure
Can i get help study that will be pay mi
Monday, March 31, 2014 at 8:13pm

physical science
IDK
Monday, March 31, 2014 at 6:56pm

science(check answers)
2 was wrong as were the others I mentioned more mass ---> more pull of gravity
Monday, March 31, 2014 at 5:36pm

science(check answers)
was 2 wrong?? and i dont understand what your saying for these problems
Monday, March 31, 2014 at 5:30pm

science(check answers)
1 A true If you pick a hunk of iron up you want to be able to drop it when you get it to the place you want it. 2 b F = G M1M2/d^2 force proportional to mass 6 c the resistance has to go up to keep the same current R = V/i 7 d i reverses, B reverses
Monday, March 31, 2014 at 5:28pm

science(check answers)
1.---please help 2.C 3.D 4.C 5.A 6.C 7.---please help 1.An advantage of using an electromagnet,shown on the crane in the image below,instead of a regular magnet to move cars in a junkyard is that an electromagnet can easily be turnd on and off. A.true B.false 2.Imagine two ...
Monday, March 31, 2014 at 5:01pm

Science
All of these are correct. Thank you
Monday, March 31, 2014 at 4:58pm

science(CHECK ANSWERS)
when the interior of a car absorbs sunlight and warms up.
Monday, March 31, 2014 at 4:52pm

EARTH SCIENCE
capacity
Monday, March 31, 2014 at 4:36pm

physical science
How many kilocalories of heat does the operation of a 1285 W hair dryer produce each second?
Monday, March 31, 2014 at 2:50pm

Science
All these answers were correct when I used them. I got a 100%! Thank you!
Monday, March 31, 2014 at 2:28pm

science
1.   Use the diagram to answer question 1. description: particles have enough energy to break free from each other and can move around freely; particles spread out in different directions  sketch: What kind of substance is described?  (1 point) solid ...
Monday, March 31, 2014 at 2:24pm

Science
What tool is used to capture the energy in sunlight?
Monday, March 31, 2014 at 2:23pm

Science
None.
Monday, March 31, 2014 at 1:43pm

Science
which of the following does not reduce water pollution?
Monday, March 31, 2014 at 1:35pm

science(check answers)
1.D yes 2.A yes 3.A yes 4.im not sure please help V = i R 12 = 4 R , R = 12/4 = 3 Ohms 5.false. I agree but am not sure what it means. One could always have a short circuit where current streams through doing nothing useful.
Monday, March 31, 2014 at 1:28pm

science(check answers)
1.D 2.A 3.A 4.im not sure please help 5.false One light bulb in a string of lights goes out. This causes all of the other lights in the string to also go out. This is an example of a A. resistor. B. parallel circuit. C. closed circuit. D. series circuit. 2.When a switch is ...
Monday, March 31, 2014 at 1:11pm

science
inertia
Monday, March 31, 2014 at 9:59am

Science/Math
166 years
Monday, March 31, 2014 at 1:22am

Science
I do not understand what the second question means? Balance the equations or what?
Sunday, March 30, 2014 at 8:46pm

Science
Al is +3 here 2 Al + 2CuCl2 --> 2AlCl3 + 3Cu
Sunday, March 30, 2014 at 8:42pm

Physical Science 9
Incomplete combustion ---> carbon particles and CO instead of CO2 That is not a good question by the way. You should know that for sure. The other things happen in: plants stomachs compost heaps and coffins not power plants
Sunday, March 30, 2014 at 8:15pm

Science
1. Rewrite the word equation as formula equation: Aluminum + copper (II) chloride= aluminum chloride + copper 2. What is not equal in these chemical formula equations: a.) magnesium + oxygen = magnesium oxide B.) water = hydrogen + oxygen c.)methanol +oxygen = carbon dioxide...
Sunday, March 30, 2014 at 8:01pm

Math
Michael has a science project due. He knew that it would take him 4 hours to complete the project. He needed to spend 50% of his time on his experiment, 40% of his time on his analysis, and 10% on putting his project together. What is the ratio of time spent putting his ...
Sunday, March 30, 2014 at 7:58pm

Physical Science 9
what part of the carbon process is responsible for the release of carbon at a p[power plant combustion photosynthesis digestion decomposition my answer is a combustion
Sunday, March 30, 2014 at 7:56pm

science (check!)
thank you.
Sunday, March 30, 2014 at 7:38pm

science
ghgh
Sunday, March 30, 2014 at 7:01pm

Science
Both gases will have approximately the same density at these conditions. When the volume is held constant, raising the temperature will increase the density of both samples.
Sunday, March 30, 2014 at 6:48pm

Computer Science
Can global user use the windows 7 operating system? What are 5 things that would need to be changed for global users to use windows operating system?
Sunday, March 30, 2014 at 6:45pm

science
Describe how amorphus solids melt and give one example of your own
Sunday, March 30, 2014 at 6:05pm

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