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September 15, 2014

Homework Help: Science

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Recent Science Questions

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SCIENCE
which of the following would most likely lead to increased biodiversity
Tuesday, December 3, 2013 at 2:37pm

Science
When would you want to have a corrosive reaction? I can find when you wouldn't want to have one but not when you wouldn't. Please help!! Thank you
Tuesday, December 3, 2013 at 2:00pm

science
How do thermometers work? I have already looked on Google and I cant find anything! Please help me!
Tuesday, December 3, 2013 at 11:08am

science help?
select the word from the following list to complete this paragraph ,you may use award once,more than once or not at all. (water,clay,sand,increases,decreases,air​,permeable,textures) Soil of different..........appear to have differing capacity to retain ........As the ...
Tuesday, December 3, 2013 at 8:54am

Geography nd physical
Can i tyk geography nd physical science if i wnt 2 become a pathologist
Tuesday, December 3, 2013 at 7:10am

science
If an automobile engine delivers 40.2 hp of power, how much time will it take for the engine to do 5.90 ✕ 105 J of work? (Hint: Note that one horsepower, 1 hp, is equal to 746 watts.)
Tuesday, December 3, 2013 at 5:42am

Science help please!
1. The relationship between temperature and volume is known as what law? 2. What is the relationship between temperature and pressure? (directly proportional or inversely proportional) 3. The relationship between volume and pressure is known as what law? My answers: 1. Charles...
Monday, December 2, 2013 at 9:59pm

science
identify three devices that convert electrical energy into light, and give an advantage and disadvantage of each one.
Monday, December 2, 2013 at 8:29pm

science
identify three devices that convert electrical energy into light, and give an advantage and disadvantage of each one.
Monday, December 2, 2013 at 8:28pm

science
Which statement explains why light from sun can warm up water in a glass? a)light travels very fast. b)light travels in straight lines. c)water reflects light energy. d)water absorbs light energy.
Monday, December 2, 2013 at 6:09pm

Science
Match these with the key terms (1) A form of energy that is always transferred from a warmer substance to a cooler one. (2) device that converts hear to a small amount of electric energy often used in temperature sensors. (3) A Push button barbecue lighter produces a small ...
Monday, December 2, 2013 at 4:13pm

Science
A biologist is constructing a cladogram to show the evolutionary relationships between the animals shown below. If anatomical features are used to construct the cladogram, which animal will be placed farthest from the shown animal? The animal shown is an antelope. A. The first...
Monday, December 2, 2013 at 1:42pm

Physical Science
How can we talk about the evolution of stars over billions of years when human beings have been observing stars for only a few thousand years?
Monday, December 2, 2013 at 12:44pm

Physica Science
Describe the movement of the Earth based upon the perceived change in positions of the stars
Monday, December 2, 2013 at 12:40pm

Physical Science
What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles?
Monday, December 2, 2013 at 12:36pm

Physical Science
What are three medical technologies that rely on the physics of elementary particles?
Monday, December 2, 2013 at 12:32pm

Physical Science
What is the question that many have about the Department of Energy and Yucca Mountain
Monday, December 2, 2013 at 12:29pm

science
Arrange the available phrases in the correct sequence in the development of unstable atherosclerosis by dragging and dropping the phrases into the boxes. 1. ↓ 2. ↓ 3. ↓ 4. ↓ 5. Plasmin causes the thrombus to detach from the endothelium Cholesterol is ...
Monday, December 2, 2013 at 9:14am

Physical Science
Is it true that electric cars do not generate pollution because they have batteries?
Monday, December 2, 2013 at 12:37am

Physical Science
Where do electric cars obtain their energy?
Monday, December 2, 2013 at 12:36am

Physical Science
Explain how the temperature difference between the poles and the equator drives the motion of the oceans and atmosphere.
Monday, December 2, 2013 at 12:36am

Physical Science
Why do we call groundwater in most areas a "nonrenewable resource"?
Monday, December 2, 2013 at 12:32am

Science/ Biochemistry
You buy a quarter pounder with Cheese Extra Value Meal from McDonalds ( assume you drink water. Answer the following questions. Assumptions 1. All proteins involved in the sandwich are tripeptides 2. 1 molecule of fat makes 5 molecules of Acetyl CoA 3. 1 molecule of ...
Sunday, December 1, 2013 at 11:26pm

science
For BOD5 test 1) Why water samples needed dilution? 2)How to check the test accuracy? 3)Under what conditions, the water sample needs "seed"? anyone can help?please.
Sunday, December 1, 2013 at 11:25pm

science
How to eliminate chloride interference up to the COD test?
Sunday, December 1, 2013 at 11:16pm

Science
For a BOD5 Test: 1) why water samples needed dilution 2) How to check the test accuracy 3) Under what conditions, the water sample needs"seed"? anyone can help, please.
Sunday, December 1, 2013 at 11:14pm

Physical Science
How do ocean currents affect local climate?
Sunday, December 1, 2013 at 7:57pm

Physical Science
What are the differences between ice caps and glaciers?
Sunday, December 1, 2013 at 7:56pm

Physical Science
What kind of rock is below the soil in Waynoka, Oklahoma?
Sunday, December 1, 2013 at 5:24pm

Physical Science
Describe how energy flows through the ecosystem near oklahoma
Sunday, December 1, 2013 at 5:22pm

Physical Science
If I live in Oklahoma, what kind of ecosystem is near me?
Sunday, December 1, 2013 at 5:20pm

science question
What is the relationship between the size of the shadow and the distance of the object from the light source?
Sunday, December 1, 2013 at 4:58pm

science
what is called when plants use enrgy from the sun?
Sunday, December 1, 2013 at 1:17pm

science
Compare and contrast spiral and elliptical galaxies.(Make at least 2 comparisons.)
Sunday, December 1, 2013 at 12:24pm

science proyect
Which type of ball will bounce highest when dropped from a height of 48 inches, a 8 inches ball(small) or a 12 inches ball(big)?
Sunday, December 1, 2013 at 11:40am

science
According to the big bang theory, by which force did the universe form ? a) gravity b) energy from a solar flare c) inertia d) nuclear fusion
Sunday, December 1, 2013 at 10:10am

Science
Three light beams encounter a medium. One light ray is reflected, while the other two are absorbed. How can the medium be described? Transparent Translucent Opaque or Clear In satellite communication, does the satellite... Receive radio signals Prevent radio signals Send radio...
Saturday, November 30, 2013 at 2:46am

Social Science
Discuss how the recent PATRIOT Act may advance various forms of collective behavior among groups within the United States. 2. Discuss the reasons for resistance to social change. 3. Describe the political, social, and ideological reasons behind the Defense of Marriage Act.
Friday, November 29, 2013 at 9:46pm

science
Which of the following most likely caused the rapid change of the mountain? a.landslide b.snowfall. c.wind erosion. d.volcanic eruption. My answer is (b)
Friday, November 29, 2013 at 8:53am

science
A soil sample contains living and non living materials. Which material was once living? a.sand particles. b.small pebbles. c.decomposing leaves. d.water droplets.
Thursday, November 28, 2013 at 3:44pm

science
Trisha poured some water over a pile of sand. Some of the sand washed away. This process is similar to which of the following? a.the eruption of volcano. b.the erosion of the walls of a canyon. c.the uplifting of mountain ranges. c.the forming of dunes or mounds in the desert.
Thursday, November 28, 2013 at 8:24am

Physical Science
Which of the following is a balanced equation? a. A1 + CuSO4= Cu + A12 (SO4)3 b. 2 A1 + CuSO4 = Cu + A12 (SO4)3 c. A1 + 3 CuSO4 = 2 Cu + A12 (SO4)3 d. 2 A1 + 3 CuSO4 = 3 Cu + A12 (SO4)3
Wednesday, November 27, 2013 at 4:51pm

Physical Science
Do metalloids have a complete outermost shell?
Wednesday, November 27, 2013 at 12:45pm

Physical Science
How many compounds are in potassium sulfide (K2S)?
Wednesday, November 27, 2013 at 12:42pm

science
how do I make a presentation?
Wednesday, November 27, 2013 at 11:26am

science
what outer planet is known for having visible clouds in its atmosphere ? a)Uranus b)Neptune c)Saturn d)Jupiter
Wednesday, November 27, 2013 at 9:35am

science
what physical components do the sun and earth have in common ? a) core and mantle b) core and atmosphere c) crust and atmosphere d) mantle and crust
Wednesday, November 27, 2013 at 9:28am

science
caco3 + kno3 =0.301g resalt soild 0.197g co2:o2 ?
Wednesday, November 27, 2013 at 4:22am

science
When molecules of water vapor in the air come into contact with a cold can of soft drink, they lose energy, slow down, and form a liquid due to a increase in _ ? I dont really know this one PLEASE HELP? <3 thanks
Wednesday, November 27, 2013 at 3:39am

Science
An object weighing 90 N has a volume of 45 mL and a mass of 9.0 g. What is its density? A. 0.10 g/mL B. 0.20 g/mL C. 5.0 g/mL d. 10 g/mL Please and Thank YOU
Tuesday, November 26, 2013 at 11:19pm

Polticial Science
Control of the bureaucracy through legislative oversight is a matter of
Tuesday, November 26, 2013 at 7:39pm

science
An objects _________ does not change no matter where in the university
Tuesday, November 26, 2013 at 6:42pm

Physical Science
An example of an oxide ore of iron is? magnetite. bauxite. chalcocite pyrite.
Tuesday, November 26, 2013 at 4:03pm

Physical Science
Groups of atoms that behave as though they were single atoms are called __________.
Tuesday, November 26, 2013 at 4:01pm

science
which of the following is an important outcome of biodiversity that humans use? A) computers B) medicines** C) fashion D) housing
Tuesday, November 26, 2013 at 10:36am

science
Neutrons have a rest mass of 1.6749*10-27 kg (equivalent to 939.6 MeV). If a certain neutron has a total energy of 949 MeV, what are its relativistic mass energy in MeV, its speed in m/s, its kinetic energy in MeV, and its momentum in kg.m.s-1?
Tuesday, November 26, 2013 at 10:30am

science
A small mass m swings in a horizontal circle of radius r at the end of a string of length Li and negligible mass, which makes an angle i with the vertical. The string is slowly shortened (for example by pulling it through a hole in its support) until the final length is ...
Tuesday, November 26, 2013 at 7:12am

Physical Science
Why is it important when calculating the distance to extremely distant stars using parallax, astronomers use incredibly accurate instruments?
Tuesday, November 26, 2013 at 1:59am

Physical Science
Why do astronomers when using the method to calculate the distance to stars, they measure the parallax angels exactly 6 months apart?
Tuesday, November 26, 2013 at 1:58am

Physical Science
Describe how transform plate boundaries differ from plate boundaries.
Monday, November 25, 2013 at 11:38pm

Physical Science
How do we know that tectonic plates move?
Monday, November 25, 2013 at 11:37pm

Science HP
When using the method to calculate the distance to stars, astronomers measure the parallax angels exactly 6 months apart. Why? Can you please help? Thank you.
Monday, November 25, 2013 at 9:56pm

Science
When calculating the distance to extremely distant stars using parallax, astronomers use incredibly accurate instruments. Why is this important? Please help Thank you
Monday, November 25, 2013 at 8:36pm

Science
When using the method to calculate the distance to stars, astronomers measure the parallax angels exactly 6 months apart. Why? Please help!
Monday, November 25, 2013 at 8:35pm

Science
What will be the new volume if 115 mL of He gas at 100°C and 0.993 atm is cooled to 26°C and the pressure is increased to 1.35 atm?
Monday, November 25, 2013 at 7:23pm

Physical Science
How many adjacent plates are there to the North American plate?
Monday, November 25, 2013 at 6:01pm

Physical Science
Descrive the "big splash" theory of the Moon's origin.
Monday, November 25, 2013 at 5:59pm

Physical Science
If I live in Oklahoma, and live in the North American plate, which direction are the adjoining plates moving?
Monday, November 25, 2013 at 4:49pm

Physical Science
What direction are the plates moving that I live near?
Monday, November 25, 2013 at 4:26pm

science
Explain why Na2CO3 against HCL titration using phenolphthalein indicator does not go to completion but stops at the NaHCO3 stage.
Monday, November 25, 2013 at 4:19pm

Physical Science
If I live in Oklahoma, what tectonic plate do I live in? How many adjacent plates are there to the one I live on? In which direction are these plates moving?
Monday, November 25, 2013 at 2:14pm

Physical Science
How do we know that tectonic plates move? Describe how transform plate boundaries differ from plate boundaries.
Monday, November 25, 2013 at 2:12pm

Physical Science
What are the tallest and longest mountain chais on Earth? How were they formed?
Monday, November 25, 2013 at 1:45pm

Physical Science
If the Mid-Atlantic Ridg opens at the rate of 5 centemeters per year, how much farther apart will Paris and New York be in a 1,000 years?
Monday, November 25, 2013 at 1:44pm

Physical Science
if Mount Everest is now 8,850 meters tall and is growing 2 centemeters per year, how old is it?
Monday, November 25, 2013 at 1:42pm

science
Infiltration is the process by which rainwater becomes; A. Saltwater B. River water C. Ground water D. Ocean water
Monday, November 25, 2013 at 12:38pm

SCIENCE (Drugs)
(fill in the blank) Addictive drugs produce changes in one particular group of synapses that use the neurotransmitter _______________.
Monday, November 25, 2013 at 11:32am

science
With respect to treating an acute myocardial infarction: Identify a drug or treatment which has the effects listed 1)Activates plasminogen to lyse the thrombus. a)Aspirin b)Warfarin c)Nitrate d)Morphine e)Tenectaplase f)oxygen 2)Helps to keep ischaemic cells alive a)Aspirin b)...
Monday, November 25, 2013 at 6:30am

science
For the reaction mc011-1.jpg at 472°C equilibrium is established when [H2] =0.0200M, [N2] = 0.0100M and [NH3] = 5.37 x 10-8M. What is the equilibrium constant for this reaction
Monday, November 25, 2013 at 3:04am

Science, Physics, math, calculus
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. You fire the arrow at 35.0 m/s oriented 30.0° above the horizontal from a height of 1.30 m while standing 47.0 m away on your first try. You may neglect ...
Sunday, November 24, 2013 at 11:31pm

Science, Physics, math, calculus
Pool players often pride themselves on their ability to impart a large speed on a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in ...
Sunday, November 24, 2013 at 11:29pm

Science, Physics, math, calculus
A toy rocket is fired at v0 = 41.2 m/s at an angle of è = 73.8 degrees with respect to the horizontal on flat level ground. Assuming that air resistance is negligible, what is its maximum height (H) and how far (R) will the rocket have traveled in the horizontal ...
Sunday, November 24, 2013 at 11:25pm

Science-Ms.Sue
Suppose some natural disaster occurs and a species of finch is forced to relocate from its original island where it dined on cactus flowers to an adjacent island with many fewer cacti but an overabundance of orchids. What would be the immediate consequences to the species in ...
Sunday, November 24, 2013 at 10:17pm

Science
What muscles do we have more of skeletal muscles, smooth muscles, cardiac muscle or involuntary muscle?
Sunday, November 24, 2013 at 8:32pm

Science
Study the image of the fossil shown below. How might a scientist use this fossil to learn more about the history of life on Earth? connexus dot com/content/media/917517-4162013-72829-P​M-1012149111.jpg to compare structures in the fossil with homologous structures in ...
Sunday, November 24, 2013 at 7:48pm

Science
I need to make a good slogan for a company that sells the mineral dolomite, using 1 of the mineral's uses. The uses are: 1) Dolomite is used as a source of magnesia (MgO) 2) It is used for acid neutralization in the chemical industry, in stream restoration projects and as ...
Sunday, November 24, 2013 at 5:59pm

Science-Ms.Sue
Which of the following correctly states the relationship between monkeys and humans? A. Humans and monkeys evolved from apes. B. Humans evolved from monkeys. C. Humans and monkeys evolved from the same ancestor, which is now extinct. D. Humans evolved from apes and monkeys ...
Sunday, November 24, 2013 at 5:25pm

Science-Ms.Sue
Very few fossils of jellyfish or their close relatives have been found. This makes it hard to trace the evolutionary history of jellyfish using the fossil record. What explains this? A. Jellyfish fossils are buried deep under the ocean floor, not in land areas where scientists...
Sunday, November 24, 2013 at 4:58pm

Science- Ms.Sue
The fossil record contains many intermediate forms of at least one evolutionary line of animals. Beginning with a set of ancient fossils of extinct animals that had three toes, the fossil record continues with intermediate forms containing two toes, and then to a single toe. ...
Sunday, November 24, 2013 at 3:45pm

science
How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual...
Sunday, November 24, 2013 at 11:59am

science
A 1520 kg car rounds a 164m radius curved at a constant speed of 22.0 m/s. What is the centripetal acceleration of the car? What is the centripetal force acting on the car?
Sunday, November 24, 2013 at 5:29am

Science
Luther Burbank was a plant breeder who developed a strain of potato plant that produced more tubers of larger size than other potato plants that were grown on farms at the time. This strain of potato was also resistant to the potato blight that had wiped out the potato crops ...
Sunday, November 24, 2013 at 1:01am

science
theory of plate tectonics/what are tectonics plates?
Saturday, November 23, 2013 at 8:09pm

Science
Luther Burbank was a plant breeder who developed a strain of potato plant that produced more tubers of larger size than other potato plants that were grown on farms at the time. This strain of potato was also resistant to the potato blight that had wiped out the potato crops ...
Saturday, November 23, 2013 at 5:09pm

8th grade science :(
How does the sun's gravity influence tides?
Saturday, November 23, 2013 at 3:41pm

science
A geneticist is studying a pedigree that shows the family history of a recessive genetic disease. Which of the following pedigrees shows an impossible relationship? (
Saturday, November 23, 2013 at 3:22pm

Science
How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual...
Saturday, November 23, 2013 at 1:33pm

Science
How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual...
Friday, November 22, 2013 at 8:12pm

Science
Calculate the % composition of H2S. Then determine the number of grams of sulfur present in 339.79 g of H2S. *I don't know how to set up the equation after I find the % composition to find the grams of sulfur. Please help!
Friday, November 22, 2013 at 8:08pm

Science
What does it mean, when it says "for visible light (ROYGBIV) which has the shortest wavelength? which has the longest? place all other colors in order based on their wavelength from shortest to longest.
Friday, November 22, 2013 at 7:28pm

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