Homework Help: Science

Branches of Science

Recent Homework Questions About Science

science
Describe the events that take place in the movement of fluid in the capillary beds. What forces are involved in the movement of fluid out of the capillaries and back in again? Where in the capillary does movement take place? What is the role of the lymphatic system in the ...
Thursday, February 14, 2013 at 3:56pm

physical sciene
Two 2.2 kg physical science textbooks on a bookshelf are 0.15 m apart. What is the magnitude of the gravitational attraction between the books?
Thursday, February 14, 2013 at 1:14pm

Science
At 25°C, Kp = 2.910−3 for the following reaction. NH4OCONH2(s) 2 NH3(g) + CO2(g) In an experiment carried out at 25°C, a certain amount of NH4OCONH2 is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total pressure in the ...
Wednesday, February 13, 2013 at 11:02pm

Science
I need an acrostic poem of the word Biotic Factors
Wednesday, February 13, 2013 at 9:01pm

Science 8R - help....!!!!
What happens during a solar and a lunor eclipse?
Wednesday, February 13, 2013 at 8:04pm

science
what is food vacuole and contractile vacuole 4th grade
Wednesday, February 13, 2013 at 6:40pm

science
a particle ia projected upward with a velocity of u m/s and after an interval of t(s) anoda particle is projected upward from the same point and wit the same initial velocity.proof dat they will meet at a height of (4u^2/8g-g^2t^2/8g)
Wednesday, February 13, 2013 at 4:51pm

science
how much oxygen does a mass of 10 grams contain
Wednesday, February 13, 2013 at 4:00pm

science
a particle is projected vertically upward with the velocity u m/s and after t(s) another particle is projected upwards from the same point and with the same initial velocity. proof that the particle will meet after a lapes of (u/g + t/2)seconds from the instance of the first ...
Wednesday, February 13, 2013 at 3:52pm

science
a particle moving in a straight line with constant acceleration passing over distances x,y,z in equal consecutive interval of time(t).find the relation between x,y and z..and the acceleration of the body.
Wednesday, February 13, 2013 at 3:40pm

Science
Tranverse and longitudinal waves are mechanical waves what is meamt by these expression
Wednesday, February 13, 2013 at 3:31pm

science
when a substance is heated energy is released/ absored. in chemisty this is called an
Wednesday, February 13, 2013 at 11:01am

Science
A 1000-MWe plant uses coal with 3% sulfur content. How many tons of SO2 will be emitted into the air during the operation of the plant for a day?
Wednesday, February 13, 2013 at 3:44am

science
a 15-g sample of a material has a volume of 1.3cc. what is its density
Wednesday, February 13, 2013 at 3:02am

science
Can chemical properties be used to separate substances?
Wednesday, February 13, 2013 at 12:59am

science
Can chemical properties be used to separate substances?
Wednesday, February 13, 2013 at 12:56am

7 Science (weather)
1. the energy for the wateer cycle come from the sun true 2. the temperature at which water vapor condenses to liquid form is called dew point 3. clouds that cover a large area stratus 4. what kind of weather would an anitcyclone likely bring not-- cool and wet 5. what kind of...
Tuesday, February 12, 2013 at 11:01pm

Science
What is the percent of fresh water and salt water?
Tuesday, February 12, 2013 at 9:43pm

Physical Science
How many CH4 molecules are contained in a 50gram sample of CH4 gas?
Tuesday, February 12, 2013 at 9:34pm

SCIENCE
HOW DOES THE FORMATION OF SEDIMENTARYROCK IN THE OCEAN CONTRBUTE TO TH FORMATION OF OIL
Tuesday, February 12, 2013 at 8:48pm

SCIENCE
HW DOES SEDIMENTARY ROCK FORMED
Tuesday, February 12, 2013 at 8:46pm

SCIENCE NEED HELP
A plane travels from California to New York. The plane travels about 5000 km in 5 hours. What is the plane's velocity? (Give directions as North, South, East, or West.)
Tuesday, February 12, 2013 at 8:23pm

science
What forces does a mover need to apply in order to keep the box moving to the right at 1 m/s
Tuesday, February 12, 2013 at 7:33pm

Science
Half-life is a measure of the rate of decay of an isotope. True False I think it is false?
Tuesday, February 12, 2013 at 6:07pm

World history; Check:P
Medieval Society Assignment What were three main causes of the need to reform the Church? The three main causes were: • Many village priests married and had families. Such marriages were against Church rulings. • Bishops sold positions in the Church, a practice ...
Tuesday, February 12, 2013 at 5:39pm

Science
How many silver atoms are contained in a 100 gram pure silver bar?
Tuesday, February 12, 2013 at 2:04pm

Science
An airplane is flying 200mph at 50 degrees north of east. Wind velocity is 50mph due south. What is the velocity of the airplane?
Tuesday, February 12, 2013 at 1:18pm

college Mathematics
I have been trying to figure this out for day's please help if you can. A survey of 59 customers was taken at a book store regarding the type of novels purchased. The survey found 34 customers purchased mysteries, 27 purchased science fiction, 20 purchased romance novels, ...
Tuesday, February 12, 2013 at 10:21am

SCIENCE Biology (urgent)
answer it with 2 paragraphs.. 1.How does chlamydia infect the human body? 2.What are the complications that can result from chlamydia infection? 3.What are the benefits of the CPAF inhibitor? 4.In what instances can control of endocycling be beneficial? 5.What are the ...
Tuesday, February 12, 2013 at 6:56am

science helppp.
4. Small pieces of rock that enter Earth's atmosphere at speeds of 15 to 70 km/s and burn up are called ____. (1 point) stars meteors meteorites asteroids
Monday, February 11, 2013 at 10:08pm

science
1. Scientists hypothesize that the sun formed ____. (1 point) less than a billion years ago from a cloud of gas and dust less than a million years ago from a chunk of Jupiter 2. Two of the inner planets are ____. (1 point) Venus and Saturn Mars and Venus Earth and Pluto ...
Monday, February 11, 2013 at 9:32pm

science
a planet has a radius of 5950 km and a value of g at the surface of 8 m/s2. If the planet decides to put a satellite into citcular orbit, what horizontal (orbital) speed must the satellite achieve?
Monday, February 11, 2013 at 8:40pm

Science
which of the following is a function of DNA 1)controlling the production of proteins in the cell 2)breaking down proteins in the cell 3)producing energy from food molecules inside the cell 4)controlling substances that enter and leave the cell 5)joining adenine with thymine ...
Monday, February 11, 2013 at 8:35pm

Physical Science Help!
Can someone please help me balance these equations? Thank you for your time!! 1. NO + O2 ¨ NO2 2. NH4Cl + Ca(OH)2 ¨ CaCl2 + NH3 + H2O
Monday, February 11, 2013 at 5:51pm

science
a poem on cell division
Monday, February 11, 2013 at 4:56pm

Science
Pluto alters the orbit of which planet? Uranus Saturn Neptune * Jupiter My guess is Neptune? There is not alo of info. that said the word "alters"? Help please....
Monday, February 11, 2013 at 3:26pm

intro to physical science
the specific heat of granite is 0.80 KJ/kg . c. I f 1.6 MJ of heat are added to a 100-kg granite statue of James Precott Joule that is originally at 18 C, what is the finale temperature of the statue
Monday, February 11, 2013 at 10:30am

intro to physical science
what is the Celsius equival of a temperature of 160 F
Monday, February 11, 2013 at 10:25am

Science!
How many grams of NH3 gas can be made if 42.0 g of N2 gas and 12.0 g of H2 gas react with each other? N2 + 3 H2 ↔ 2 NH3
Monday, February 11, 2013 at 12:42am

Science
Need help with a research topic for a paper on conservation of fresh water. I have to include two disciplines of classes - history and human and family development. Also, I need to integrate a theory - Bandura's theory of modeling? Can anyone help me? Throw me a bone to ...
Sunday, February 10, 2013 at 11:15pm

science
Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 3.8). The empty capacitor is connected to a 16 -V battery. What must be the potential difference across the plates of the capacitor filled with a dielectric so that it stores ...
Sunday, February 10, 2013 at 4:50pm

science
The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3. (Show all of your working and give your ...
Sunday, February 10, 2013 at 3:41pm

chemistry
Which of the following is not an example of a science? geology astronomy astrology ecology
Sunday, February 10, 2013 at 1:08pm

physical science
a metal power/laundry line which hang droop on a very warm day
Sunday, February 10, 2013 at 1:03pm

physical science
the need for gaps in railway lines
Sunday, February 10, 2013 at 12:58pm

chemistry
Which of the following is not an example of a science? geology astronomy astrology ecology
Sunday, February 10, 2013 at 12:56pm

science
How deep is the wind mixed layer in the Atlantic ocean is the water column stable or unstable
Sunday, February 10, 2013 at 12:46pm

Science (8th grade)
I still am confused about the snail lab things... Ms. Sue helped me with the calculate, but I still have a question... Calculations: .136 cm/s .000136 m/s .4896 m/h Calculate how long it will take your snail to cross a sidewalk(2m) cross a road(20m). How would I do that?
Sunday, February 10, 2013 at 11:59am

science
A boy and his skateboard have a combined mass of 64 kg. If he is moving with a speed of 3.2 m/s, and collides with a stationary skateboarder whose mass (including his skateboard) is 96 kg, with what speed will the two skateboarders move immediately after the collision?
Saturday, February 9, 2013 at 8:18pm

12th science
How will you prepare potassium per magnate.
Saturday, February 9, 2013 at 8:12pm

science
Calculate the fraction of atoms in a sample of argon gas at 365 K that has an energy of 11.0 kJ or greater.
Saturday, February 9, 2013 at 6:00pm

Science (8th grade)
I am doing a lab and I really need help! I calculated that my snail traveled as his average speed of .136 cm/s, 1.36m/s, and 4896 m/hr. Does that sound right? Also I need help on another thing. My paper says Calculate how long it will take your snail to cross a sidewalk (2m) ...
Saturday, February 9, 2013 at 4:36pm

Science
what power is expended by a weightlifter when lifting a 60kg barbell a vertical distance of 1.1m in a time interval of 2.0s
Saturday, February 9, 2013 at 11:36am

science
Hi...I am having trouble on one last science question. Which statement supports the fact that Earth rotates about its axis from West to East? a. only one face of the moon is visible from earth b. the moon's phases change every day over the course of 29 days c. the moon ...
Friday, February 8, 2013 at 5:42pm

Science
Having trouble with the question below. Clouds form when air is: a. swirled by wind b. heated by the sun c. turned into ozone Thanks.
Friday, February 8, 2013 at 5:30pm

Ms. Sue
can you do me a favor and look at my science question? please?
Friday, February 8, 2013 at 2:57pm

science
List the five conditions that can disturb genetic equilibrium in a population I think Infinite population size, no mutation, no selection against a certain homozygous gene, random mating, no immigration/emigration Mutations. can someone let me know if this is right or not? if ...
Friday, February 8, 2013 at 1:24pm

science
Newton’s Second Law of Motion is expressed as F = ma. If you are pushing a lawn mower in your backyard and suddenly double the pushing force, what will happen to the lawn mower's rate of acceleration? The mass of the lawn mower is constant. A. The acceleration will ...
Friday, February 8, 2013 at 7:36am

Science
Explanation of the digestion of protein in the human body.
Friday, February 8, 2013 at 5:06am

Physical Science
Predict how each of the following changes will affect the following reaction involving gaseous reactants and products: 2NO2 = N2O4 + heat a. the temperature is increased. b. the pressure is increase. c. N2O4 is removed from the equilibrium mixtur. d. NO2 is added to the ...
Friday, February 8, 2013 at 2:20am

Physical Science
Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat A. the pressure is increased. b. the temperature is decreased.
Friday, February 8, 2013 at 2:16am

7th grade science help ASAP 2 questions!
4. Most digestion takes place in the _____. (1 point) large intestine mouth small intestine stomach 5. The large intestine maintains ___________ by absorbing water from the _______, or undigested mass. (1 point) homeostasis; chyme digestion; saliva mechanical digestion; ...
Thursday, February 7, 2013 at 10:35pm

space science
What other challenges do you think there would be for engineers designing a spacecraft to travel to mercury?
Thursday, February 7, 2013 at 6:09pm

Science
What subjects, other than astronomy, would astronomers have to study in order to discover black holes?
Thursday, February 7, 2013 at 5:52pm

Science
How would your life be affected if a magnetic-storm shut down electricity in your city?
Thursday, February 7, 2013 at 5:51pm

Science
How does the temperature change in the sun's atmosphere differ from the temperature change in the sun's interior?
Thursday, February 7, 2013 at 5:50pm

Science Question
Which of the following statements best describes what is happening in a water softening unit? The hard ions are all trapped in the softener, which filets out all the ions. The ions in the water softener are softened by chemically bonding with sodium. The sodium is removed from...
Thursday, February 7, 2013 at 4:54pm

Science
What are the types of proteins and their biological value?
Thursday, February 7, 2013 at 4:45pm

science
Which material would have a higher specific heat: a. a material made of heavier particles b. a material made of lighter particles c. the mass of the particles does not affect specific heat
Thursday, February 7, 2013 at 4:29pm

science
The temperature increase of an object depends on: a. its mass b. its velocity c. the material from which it is made d. answers a and c e. none of the above On a night at the beach, which would you expect to cool faster: the ocean water or the beach sand? Explain your answer
Thursday, February 7, 2013 at 4:27pm

science
Which of the following would require more energy to heat it from 10°C to 20°C? a. 200 kg of water b. 200 kg of aluminum c. 100 kg of steel How much heat energy is required to raise the temperature of 20 kilograms of water from 0°C to 35°C?
Thursday, February 7, 2013 at 4:23pm

science
1. When you hold a piece of chocolate in your hand, why does the chocolate melt? 2. Which is a larger unit of heat: calorie, kilocalorie, Btu, or joule?
Thursday, February 7, 2013 at 4:18pm

science
why is it important that the tumble dryer's plug has properly connected earth wire?
Thursday, February 7, 2013 at 3:05pm

Science
A car of mass m travelling at 20 m/s east on a straight level road and a truck of mass 2m travelling at 20 m/s west on the same road. What is the velocity of the car relative to the truck?
Thursday, February 7, 2013 at 2:01pm

Science
The concentration of k ions inside the nerve cell is about 20 times greater than concentration of these ions outside the nerve cell.what potential difference between outside and inside of the cell would you expect to measure if ths was only due to the concentration difference ...
Thursday, February 7, 2013 at 1:28pm

Earth Science
If a tree has grown out of the side of a rock cliff and a house was recently built on the land above causing the tree a lot more rain water to run off where the tree lives, it's roots have started to be exposed and are now growing faster and bigger with the increase of ...
Thursday, February 7, 2013 at 1:22pm

Environmental Science 11th grade
The process of separating 238-U to produce material containing a higher concentration.
Thursday, February 7, 2013 at 12:35pm

Environmental Science 11th grade
If half of a quantity of radioactive material decays in 10 years, in another 10 years?
Thursday, February 7, 2013 at 12:34pm

Science
A stretched spring with k=21.6 N/m is pulling with a force of 1.5 N. How much work was done to stretch the spring
Wednesday, February 6, 2013 at 10:49pm

Science
Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp = 1.67×10-27 kg and charge +e, an alpha particle has mass malpha = 6.65×10-27 kg and charge +2e, where e = 1.60×10-19 C. An ...
Wednesday, February 6, 2013 at 10:30pm

Science
If a tree has grown out of the side of a rock cliff and a house was recently built on the land above causing the tree a lot more rain water to run off where the tree lives, it's roots have started to be exposed and are now growing faster and bigger with the increase of ...
Wednesday, February 6, 2013 at 10:09pm

Science
If the adverage weight of a human body is 75kg and given the mass of the earth is 5976 x 10^21kg, how many people will it take to exceed the weight of the earth? At the present growth of 1.14%, when will the present population of 6.8 x 10^9 grow to that number?
Wednesday, February 6, 2013 at 8:54pm

science
what are 5 types of genotypes
Wednesday, February 6, 2013 at 8:41pm

science
A 15.0 gram lead ball at 25.0°C was heated with 40.5 joules of heat. Given the specific heat of lead is 0.128 J/g∙°C, what is the final temperature of the lead?
Wednesday, February 6, 2013 at 8:18pm

Science
trying to lift an 8-N load that is attached to a fixed 2 pulley system. Hands move a distance of 1.6m while the load moves 0.8m, what is the force required to lift the load? I am thinking the the answer is 1.6 divided by 0.8 am i on the right track? what is the formula for ...
Wednesday, February 6, 2013 at 7:38pm

science
The hot coils in an electric baseboard heat the surrounding air using _____.
Wednesday, February 6, 2013 at 6:44pm

science. neep help ASAP
PLEASS help ASAP. I FORGOT MY FOLDER iN MY LOCKER AND I HAVE NO CLUE WHAT These are. If u can give me the annswer to this one question then i can do all the other ones. DIRECTIONS: in the exercise that follow, arrange the items listed into different groups. Give each group a ...
Wednesday, February 6, 2013 at 6:28pm

Science
What can oil be turned into by the refining process?
Wednesday, February 6, 2013 at 5:57pm

Science
Give and explain four land features glaciers cause from their movements. Thanks for any help!
Wednesday, February 6, 2013 at 5:50pm

science
what must the crane work against in order to lift the box upward? . wind . friction . gravity . cable tension
Wednesday, February 6, 2013 at 5:48pm

Science help please!
If a tree has grown out of the side of a rock cliff and a house was recently built on the land above causing the tree a lot more rain water to run off where the tree lives, it's roots have started to be exposed and are now growing faster and bigger with the increase of ...
Wednesday, February 6, 2013 at 5:45pm

7 Science
If earth was larger what would happen to it's atmosphere? It would expand It would evaporate It would be sucked into space It would become more dense
Wednesday, February 6, 2013 at 2:12pm

science
Describe a process for determining the volume of a small, irregularly shaped object.
Wednesday, February 6, 2013 at 1:29pm

science
Identify the 3 things that can be classified as Matter and 3 things that cannot. Explain your reasoning for each classification.
Wednesday, February 6, 2013 at 1:28pm

science
The compound 1-iodododecane is a nonvolatile liquid with a densityof . Thedensity of mercury is.What doyou predict for the height of a barometer column based on1-iodododecane, when the atmospheric pressureis 748 ? answer in meters
Tuesday, February 5, 2013 at 11:57pm

Physical Science
I studied this 2 years ago in college and am no back in school. I can't remember any of this stuff and I really need to figure it out. Please Help Me!! The Latent Heat of Vaporization for water is 540. cal/g. How much heat (in calories) must be added to 10.0 g of water at ...
Tuesday, February 5, 2013 at 10:05pm

Science
Laith notices that the air in his science classroom is much warmer than the air in his math classroom. Which statement describes how the air particles are different in his colder math classroom? A. They move faster on average B. They are vibrating C. They have less average ...
Tuesday, February 5, 2013 at 8:50pm

Science
order from the smallest to the largest: nucleus, molecule, atom, quark.
Tuesday, February 5, 2013 at 8:46pm

Science
what device in a nuclear power plant creates nuclear energy?
Tuesday, February 5, 2013 at 8:44pm

Science
Sarah heated two cubes of aluminum to 50 degrees celsius. Cube B has a volume of two cubic centimeters. If the cubes do not touch each other, which of these statements is true? A. Cube A has a higher temperature than cube B. B. Cube B has a higher temperature than cube A C. ...
Tuesday, February 5, 2013 at 8:35pm

science
compare the formation processes of igneous, sedimentary and metamorphic rocks. in general which process can be the most direct, requiring the fewest number of steps? which can be teh most complex? explain
Tuesday, February 5, 2013 at 8:35pm

Physical science
How much energy would be needed to warm 1.5 L of water from 0 °C to 25 °C? The specific heat capacity of water is 4186 J/kg/°C.
Tuesday, February 5, 2013 at 8:33pm

social science
what is deepest lake in the world?
Tuesday, February 5, 2013 at 8:32pm

physical science
How much energy would be needed to warm 1.5 L of water from 25 °C to 50 °C? The specific heat capacity of water is 4186 J/kg/°C.
Tuesday, February 5, 2013 at 8:14pm

Please help with Physical Science 2!! Confused!
Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?) Grams NaCl Moles NaCl # Molecules ...
Tuesday, February 5, 2013 at 6:08pm

Science
If you are given a sample containg 1.204 x 10 24 molecules of NaCl, what is its weight in grams?
Tuesday, February 5, 2013 at 5:57pm

science
What simple machines are in a skateboard?
Tuesday, February 5, 2013 at 5:47pm

political science
Critically evaluate plato's justification of rule by philosopher kings. Please help its needed the soonest
Tuesday, February 5, 2013 at 5:18pm

Physical Science Please Help!
Table salt, sodium chloride, has the formula NaCl. A weight of 58.44 grams of table salt contains 1.0 mole of NaCl molecules. How many moles of NaCl are contained in 29.22 grams of NaCl?
Tuesday, February 5, 2013 at 5:08pm

Science
Some nitrogen atoms have seven neutrons and some have eight neutrons. These two forms of nitrogen are: a. ions of each other b. phases of each other c. isotopes of each other and how exactly do you know? My book doesn't cover this at all yet its in my homework so im not sure
Tuesday, February 5, 2013 at 4:28pm

science
what is the main cause of global wind patterns?
Tuesday, February 5, 2013 at 3:32pm

science
Some parts of the atmosphere are warmer than others. This causes air particles to-------,which in turn causes the wind. Moves heat by conduction form convestion currents move by radiation become more dense. I am just having a hard time finding the answer to this question.
Tuesday, February 5, 2013 at 3:25pm

History
3. In order to try to gain control over West Berlin, the Soviet Union *A.) set up a total blockade cutting off that section of the city. B.) threatened the section of the city with troops and tanks. C.) operated a massive airlift to bring in needed supplies. *D.) went to the ...
Tuesday, February 5, 2013 at 2:06pm

science
Give 2 examples of things that are not matter and explain why they are not classifed as matter
Tuesday, February 5, 2013 at 1:05pm

science
A piece of copper wire and a 50lb block of copper have the same density. Explain how can this be true.
Tuesday, February 5, 2013 at 1:04pm

science
Two forces of 5N and 7N respectively act on an object when will the resultant of the two vectors be at maximum
Tuesday, February 5, 2013 at 12:29pm

maths science
3a+b+5a+2b. 4(e-2)-2(e+1).(2x+1)(x-2) find y if x=-2
Tuesday, February 5, 2013 at 8:42am

Science
A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with the outer edge of the wheel. Friction causes the wheel to stop in 2 seconds. What is the average torque on the wheel by the frictional force?
Tuesday, February 5, 2013 at 12:36am

science
what plates is mount adatara on?
Monday, February 4, 2013 at 9:59pm

science
what the area of an open end of a pipe?
Monday, February 4, 2013 at 9:31pm

Pre-AP Science
an atom consists of 10 neutrons ,10 electrons,and 9 protons. The atom has gained an electron resulting in a charge of -1. What is its mass number?
Monday, February 4, 2013 at 9:15pm

science
name three types of data
Monday, February 4, 2013 at 7:27pm

science
what happens to chromosomes during the stage stage of the cell cycle in which the nucleus divides, include prophase, metaphase, anaphase,telophase
Monday, February 4, 2013 at 7:04pm

Science
Can you help me with meiosis? Why is meiosis important?
Monday, February 4, 2013 at 5:57pm

Science
Hello Steve. I have another question... why is Meiosis important?
Monday, February 4, 2013 at 5:14pm

Science
In lab the other day we did an acid/base extraction to separate mixtures. The top layer of the mixture is the organic layer, which consists of diethyl ether and fluorine. The bottom layer is considered to be the aqueous layer, which consists of water and benzoate anion. The ...
Monday, February 4, 2013 at 5:11pm

Physical science
A sustained force of 56 moves a model airplane 16 along its runway to provide the required speed for takeoff. Find the kinetic energy at takeoff. What is the formula?
Monday, February 4, 2013 at 3:26pm

Environmental Science 11th grade
Discuss economic reasons that have caused many utilities to opt for coal-burning, rather than nuclear-powered, plants
Monday, February 4, 2013 at 12:09pm

Environmental science 11th
Describe how energy is produced in a nuclear reaction.
Monday, February 4, 2013 at 12:04pm

Environmental Science 11th
Compare the outlook regarding the use of nuclear power in the United States and globally in each of the following decades: 1960s, 1970s, 1980s, 1990s, and early 21st century.
Monday, February 4, 2013 at 11:48am

Environmental Science 11th grade
What problems are associated with the long-term containment of nuclear?
Monday, February 4, 2013 at 10:47am

science
Design a pseudocode and a flowchart to input three numbers,find their total and average,and print both numbers.
Monday, February 4, 2013 at 4:51am

Computer science
3.We often come across the terminology like 6b-bit processor, 64-bit operating system and 64-bit system bus. Do you understand those terminologies? What exactly those numbers represent? Please find out the exact meaning of three terminologies above (give example for each of ...
Sunday, February 3, 2013 at 10:17pm

Computer science
Assume you have a computer that contains 1GB of memory. It contains four memory slots. Each slot can contain 128 MB, 256 MB, 512MB, 1 GB, or 2GB memory modules. two of the slots contains a 512MB memory module. What memory chip would you buy to increse the memory on the ...
Sunday, February 3, 2013 at 10:14pm

Science Fair Project
Can you check for misspelling, punctuation and just to see if it's written correctly?... To sum up, my hypothesis was correct. I predicted that the plant that got the most sun would be the most colorful and the plants that were in the shade every day or even half of the ...
Sunday, February 3, 2013 at 4:45pm

Science 8R
What is Combustion? this is not homework (please give me a good definition for 8th graders like me to understand) BTW - I'm creating a study guide for the NYS Science Test I'm taking at the end of the year. We started taking notes in my science class that we can use to...
Sunday, February 3, 2013 at 3:59pm

Science 8R
Endothermic reactions are ..... what??? This is not homework.
Sunday, February 3, 2013 at 3:57pm

Title for science fair project
what's a good title for: Does light affect the pigment of the leaves?
Sunday, February 3, 2013 at 2:24pm

Science Fair Project
is it a good idea to put your variables in your conclusion? My teacher didn't ask for it but I would like to put it.. should I?
Sunday, February 3, 2013 at 2:22pm

science
a stone is thrown vertically upwards fron the edge of a cliff of height 100m, with a velocity of 9m/s. The stone then fall to the ground(the foot of the cluff). Determine the total time the stone will take to hit the ground
Sunday, February 3, 2013 at 1:05pm

Maths and science
The sum of the first n terms of a sequence is given by 4-4(1/2)^n.calculate the first 3 terms
Sunday, February 3, 2013 at 12:05pm

8th grade science
Good hypothesis for does the human tongue have definite areas for certain tastes
Sunday, February 3, 2013 at 10:19am

science
Does the human tongue have definite areas for certain tastes
Sunday, February 3, 2013 at 10:18am

science
factors affecting child development
Sunday, February 3, 2013 at 2:13am

Science
Ms. Lewis is a chemist mixing two solutions together. A chemical reaction takes place, and the solution becomes warm. Which statement best describes what has happened? A. Energy has been created in the form of thermal energy B. Energy has been transformed from one form to ...
Saturday, February 2, 2013 at 6:18pm

Science
Describe the movements of particles in a cold glass as thermal energy is transferred to it from warm hands?
Saturday, February 2, 2013 at 5:36pm

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