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September 2, 2014

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Recent Science Questions

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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

Science
What kind of electromagnetic radiation could be used to "see" molecules? A cold virus? Explain your reasoning please.
Friday, November 22, 2013 at 5:27pm

Science
What is a frequency of a wavelength?
Friday, November 22, 2013 at 4:48pm

Science
What is the order of the electromagnetic spectrum from highest to lowest energy. I got Radio, Microwave, Infrared, Visible light, Ultraviolet light, X-ray, and Gamma ray. Am I correct? If not, please help me so I can put it in the right order.
Friday, November 22, 2013 at 4:21pm

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 4:20pm

Science~!
Sodium is a metal and chlorine is a poisonous gas. Neither is safe to eat. However, when sodium and chlorine combine, it produces edible table salt. What can be concluded? (1 point) Table salt has similar physical properties of both reactants.*** Table salt is a metalloid with...
Friday, November 22, 2013 at 3:16pm

science
The half-life of uranium-235 is 713 million years. Suppose a fossil originally had 26 grams of uranium-235. A geologist had the fossil tested and found that it now has only 3.25 grams of uranium-235. Approximately how old is the fossil?
Friday, November 22, 2013 at 2:52pm

science
How does a stars life begin ?
Friday, November 22, 2013 at 2:40pm

science
Please help!!!! Explain how mutations in DNA may affect the traits of an individual
Friday, November 22, 2013 at 1:34pm

science
Please help!!!!! 1. A dog is trained to sit and shake hands. These traits are most likely. (1 point) A. inherited B. not inherited C. not acquired D. innate 2. In a particular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a...
Friday, November 22, 2013 at 1:30pm

science
A 5.0 kg bowling ball is rolling down the lane at 4.0 m/s. What is the kinetic energy of the bowling ball? a. 40 J b. 50 J c. 80 J d. 100 J
Friday, November 22, 2013 at 1:13pm

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 11:33am

science
Some constellations such as Ursa Minor, are visible in the sky year round other constellations appear for only part of the year.Explain why this happens.
Friday, November 22, 2013 at 11:29am

science
which of the following possibly outcomes regarding the universe do scientists think is most likely ? a) the universe will continue to expand b) the universe has completed its expansion c) the universe will start shrinking soon d) the universe is already shrinking
Friday, November 22, 2013 at 8:44am

science
From the cosmic background radiation, what can scientists infer that the universe was like after the big bang ? a) very small b) hot c) the same average temperature as it is today d) cooler then it is today
Friday, November 22, 2013 at 8:33am

Science
Felipe made a toy boat out of clay, but it kept sinking in water. He changed the boat's design by making it slightly wider than before. Why did Felipe's newly designed boat float on water? A. He decreased the density by increasing the volume. B. He decreased the ...
Friday, November 22, 2013 at 6:19am

science
what is a convex mirror? what happens when a diverging beam incident on a convex mirror?
Friday, November 22, 2013 at 2:41am

science
what is matter
Thursday, November 21, 2013 at 7:36pm

science 3rd grade
list two example of soils, liquids, and gases
Thursday, November 21, 2013 at 7:05pm

science
suppose you have the 7 pieces of wood shown to the right. predict what will happen to the mass of the pieces of wood if you put them together without cutting them to make a birdhouse. explain?
Thursday, November 21, 2013 at 6:07pm

Science
Scientists have inserted the gene for human insulin into bacteria. These bacteria make the insulin protein, which can then be used by people who have diabetes. This process is an example of -hybridization -gene therapy -selective breeding -genetic engineering my answer is D
Thursday, November 21, 2013 at 12:56pm

Science
A woman with a genetic disease marries a man who does not carry them disease. It is not possible for their children to carry the disease. The disease must be -- a) sex-linked b) recessive c) dominant d) caused by an extra chromosome my answer is b recessive
Thursday, November 21, 2013 at 12:38pm

Life science, history, geography, and mathematics
cn diz subjects help me wit ma career choice bcz i wnt 2 bcum an archaeologist
Thursday, November 21, 2013 at 8:15am

Science
One of the following scientists never made any contribution to the development of periodic table A) Mendeleev B) Luther Meyer C) T.M Peters D) John Newlands
Thursday, November 21, 2013 at 2:25am

science
1. In this family, Noonan’s Syndrome is being caused by allele (a)______ in gene (b)______; specifically the Mutation with letter (leave off the “Mutation” and just give the letter) (c)______. 2. In this family, deafness is caused by a mutation in the (a)...
Wednesday, November 20, 2013 at 11:04pm

science
A 2.94 kg ball is attached to a ceiling by a 1.88 m long string. The height of the room is 5.05 m . The acceleration of gravity is 9.8 m/s2 . What is the gravitational potential energy associated with the ball relative to the ceiling? Answer in units of J What is its ...
Wednesday, November 20, 2013 at 9:40pm

science
Does 'cocoa bean' mean 'cacao bean'? What is the difference between 'cacao' and 'cocoa'?
Wednesday, November 20, 2013 at 9:03pm

Science
Luis wanted to create a clay model of earth and the sun. To show how Earth rotates, Luis wants to use a toothpick to represent Earth's axis of rotation. Where should Luis place the toothpick? A. Horizontally through Earth in the direction Earth is traveling B. Vertically ...
Wednesday, November 20, 2013 at 8:27pm

Science
Uranium-238 is less stable than oxygen-16. What accounts for this difference? (A) Uranium is a solid, while oxygen is a gas. (B) Unlike oxygen-16, uranium-238 has a nucleus in which repulsive electric forces surpass the strong nuclear forces. (C) Oxygen-16 has fewer electrons ...
Wednesday, November 20, 2013 at 6:53pm

Physical Science
3. Radioactive decay of nuclei often involves several decays before a stable nucleus is formed. This is called a decay chain. What stable isotope is formed when radon-222 undergoes a decay chain of four alpha decays followed by four beta decays? (A) tungsten-206 (B) platinum-...
Wednesday, November 20, 2013 at 6:28pm

Math/Science
If it is 587 quadrillion miles across our galaxy and you are traveling at 93,000 miles per second, how long will it take you to go across it?
Tuesday, November 19, 2013 at 11:21pm

literature
I have one more confusing question regarding this. And Thank you Ms.Sue for answering the last question! Franklin's humor in Witch Trial at Mt. Holly depends upon the belief that... a)the belief that religion takes precedence over science b)the belief that the physical ...
Tuesday, November 19, 2013 at 9:15pm

Science
What causes a diet coke to float and a regular coke to sink in water??
Tuesday, November 19, 2013 at 8:56pm

Science please
Kinetic energy and Potential energy are often considered to be forms of mechanical energy. List three other forms of energy and state a source for each.
Tuesday, November 19, 2013 at 7:47pm

science
a misconception of the sun is stronger at sunrise and weaker at sunset
Tuesday, November 19, 2013 at 7:15pm

math/science
need help to learn how to add unlike denominators? 5th grade
Tuesday, November 19, 2013 at 6:36pm

literature (bejamin Franklin)
I have one more confusing question regarding this. And Thank you Ms.Sue for answering the last question! Franklin's humor in Witch Trial at Mt. Holly depends upon the belief that... a)the belief that religion takes precedence over science b)the belief that the physical ...
Tuesday, November 19, 2013 at 6:20pm

Science
The Milky Way has a radius of approximately 100,000 light years. How many miles is that? How long would it take you to travel across our galaxy if you were traveling at 50% the speed of light (show work)?
Tuesday, November 19, 2013 at 6:19pm

Science
If you are traveling 93,000 miles per second, and you needed to travel 620 trillion miles, how long would it take you?
Tuesday, November 19, 2013 at 4:11pm

social science
formulate a 3 stage hypothesis from "How have Asia's achievments broadened our understanding of the influence of our neighbours ?" 1. The great wall od china is a famous tourist destination toAustralians as it helps us understand the Chinese culture and History
Tuesday, November 19, 2013 at 3:38pm

Science
If a galaxy is 1,000 Mpc away, how fast isit recending?
Tuesday, November 19, 2013 at 3:38pm

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