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Atmospheric Science
The current magnitude of the greenhouse effect is measured by the difference between the emission from the surface and the emission from the top of the atmosphere, G=¦ÒTs^4 −¦ÒTe^4 ¡Ö 150 W m-2. What would be the required magnitude ...
Atmospheric Science
Show that if the planetary albedo is 0.3, a change in solar constant of 1 W/m-2 results in a global-mean climate forcing of 0.175 W/m-2.
Atmospheric Science
Estimate the rate of freshwater mass production (kg s-1) b the melting of the North American ice sheet, assuming its melting took 500 years. How does this compare with the rate of deep-water formation in the North Atlantic, which is estimated to be about 2 x 10^10 kg s-1 at pr...
science
breathing term that can make others mad
environmental science
why is sewage a problem and how have human activities contributed to this problem?
religious education
please could someone help me answer this question - can science prove that God does exist? thankyou
science-physics
An electric heater draws a a current of 10A from a 220 V supply .What is the cost of using the heater for 5 hours everyday for 30 dats if the cost of 1 unit (1 kWh)is 60 paise(indian currency)
science help plzzz
how is building a skyscraper today simular to and different from the building of the pyramids
Creative Writing
Write a minimum of a 500 word-essay or a minimum five-stanza poem using Definition or Classification and Division. (Note: If the poem is free verse, it must be at least 400 words.) Be sure to follow the developmental methods presented in this lesson. Your work must have a reco...
science
how is building a skyscraper today simular to and different from the building of the pyramids(anykind of pyrsmids) Thnx
Academy of Hospitality and Tourism at Erasmus
What is the earth science tables?
science
1)Compare the properties of metals nonmetals and metolliods? 2)Why can elements and compound be considered pure substance? 3)What is the difference between colloids and suspension?
Science
What is it caled when... A family of unreactive elements whose atoms do not gain, lose, or share valence electron
science
1)Compare the properties of metals nonmetals and metolliods? 2)Why can elements and compound be considered pure substance? 3)What is the difference between colloids and suspension?
science
1)Compare the properties of metals nonmetals and metolliods? 2)Why can elements and compound be considered pure substance? 3)What is the difference between colloids and suspension?
science
Why do potatoes grown in mineral-rich soils, such as those found in Prince Edwar Island, are better tasting than those grown hydroponically?
Science
Why would the irrigation of plants with sea water be harmful?
Science
1) The vector sum of three vectors gives a resultant equal to zero. what can you say about the vectors? 2) Vector is 3.00 units in length and points along the positive x-axis. Vector is 4.00 units in length and points along the negative y-axis.Use graphical methods to find the...
Science
What is an element named after a country in the western hemisphere?
Science
What is the element on the periodic table that is named after the sixth largest cantinent?
science
what are some advancements to diamond mining from the 1800's to 2009
Science
Describe the sizes of the different digestive organs in earthworms. Which organ is the largest? How does its size make it well suited for its function?
French
From the list of occupations, I picked my top 5 favourite, and they were, 1. journaliste 2. Professeur 3. Dentiste 4. Cuisinière 5. infirmière My next task is- For each of your top five career choices in Activity 9, determine what 3 classes in high school you mig...
Science
Chromium is produced by reacting its oxide with aluminum. If 76 g of Cr2O3 and 27 g of Al completely react to form 51 g of Al2O3, how many grams of Cr are formed?
earth science
What effects do convection currents have on the mantle and crust that would not happen if convection currents didn't exist?
math
ryan left the science museum and drove south gabriel left three hours later driving 42mph faster in s effort to catch up. after 2 hours gabriel finally caught up. find ryans speed
science
Describe one way in which work is done (Reminder: For work to be done, the force and the distance must be in the same direction.). guitar, keyboard Can you give me an example of how to describe how work is done in one of these example please?
science
Describe one way in which work is done (Reminder: For work to be done, the force and the distance must be in the same direction.). guitar, keyboard Can you give me an example of how to describe how work is done in one of these example please?
science
What are alloys in science? i forgot
science
What is the differnce between collids and suspension?
History
What year was Frances Drake born ? ? ? Please help me. And also if you have time, I would really appreaciate it if you would go over to the science part and help me with the first question on the page. THANK YOU SOOOOOO MUCH ! ! !
science
Can you please tell me how to draw a scientific line graph about Conposition Of Air ? ? ?
science
where were ingredience found to cook many years ago?
science
i need this questioned answered or... i will flunk out of science HELP ME!!! What are the end products of respiration????
Science Olympiad
I don't know if you can help me but i am in science olympiad and i dont now what to bring for the second part of physical science lab. I already tried going on their website so that did not help.
science
My grandson is in 4th grade. His teacher assigned the class to make a container that will keep an ice cube frozen for several hours while inside. Do you have any ideas?
science
what is a substance that provides nourishment to an organism
Science
Why do human need water?
8th Grade Science
by stirring a gas in a liquid,its solubility does it speed up or slow down n the dissolving process............PLEASE HELP ITS HARD
science
Which of the following does NOT describe a suspension? A)particles are soluble B)particles settle out over time C)particles can block light D)particles scatter light
science
what are three ways to make a sugar cube dissolve more quickly in water
science
hey i need help[ filling out this sentence..... Solubility is dependent on_______________ and_____________. plese help me thank you
science
What can particles in solution NOT do because ther are so small
7th grade science
name two scientest who studied inherited genetics and what they used for research and why
7th grade science
name 2 scientest who inherited traits
science
Define Osmosis and identify examples in which the human body uses osmosis.
where
where can i find a science project that is what toothpaste reacts faster with shells?
Earth Science
What are two forces that cause the Earth's surface to constantly change and what are their effects on the planet? Please help I do homeschooling and I'm super behind in science please answer before 12:00 p.m. on 11-17-09
Science
CAN I PLEASE HAVE A TRUSTED EMAIL ADDRESS TO SEND A PROJECT TO? I NEED HELP - SO MUCH SO THAT I CAN'T EXPLAIN THE PROBLEM!
physical science
why is the weight of a car less than the actual weight
science
What will happen if the polar bear became extinct?
Science
1.You are riding your bike and you slow down to turn a corner. A.Changing Velocity B.Acceleration 2.Your are seated in a stopped car that suddenly seems to be rolling backward.You use the street to realize the bus next to you is going forward A.Reference Point B.Displacement
science
a teacher does 140 J of work in 20 s. How much power did he use?
science
in the course of a short race,a car does 50,000 J of work in 7 s. What is the power of the car during a race?
science
a libraian lifts a box of books that weighs 93 N a distance of 1.5 m. How much work does he do?
science
as you push a lawnmower the horizontal force is 300 N. If you push the mower a distance of 500 m, how much work do you do?
science
Can you tell about velocity, accelration, motion, position, friction, gravity, weight and gravitation. i mean 4th grade velocity.
science
Can you tell me more about velocity, accelration, motion, position, friction, gravity, weight and gravitation.
Science
Mole Conversions Problem: 3.80 mol Li = ____________ atoms Li.
Science
I am in 6th grade and doing very well so i am not stupid or anything but i dont know if my science fair project is for my grade level. It's What Makes Ice Melt The Fastest. What Do You Think? Thnak You
biological science
What are the characteristics of non-living things?
physical science
What mass of NaCl do you need to make 71g of Cl2?
science
dr.bob222 i dont get it can u give me the answer
science
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
science
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
science
suppose you are pulling a wagon with the handle at an angle. How can you make your task easier?
science
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
8th grade Science
Please help need ideas I am building a 3D model of a plant and animal cell. I need to show diffusion and osmosis movement within the cell.
science
A 400kg sports car collides with a stopped pickup 40m/s. After the collision, the sports car stops and the pickup moves forward at 15m/s. What is the momentum of the sports car before the collision? What is it the mass of the pickup?
science
A 400kg sports car collides with a stopped pickup 40m/s. After the collision, the sports car stops and the pickup moves forward at 15m/s. What is the momentum of the sports car before the collision?
Physical Science
A red light source and a green light source shine on a white screen. what color will the screen be? Explain your answer. If a blue object is placed in front of the screen, what color will it be? explain your answer
Physical Science
Suppose you want to heat 40 kg of water by 20 C. How many joules of heat are required?
Physical Science
If an engine must do 500 joules of work to pull a 100 N load up to a height of 4 meters, What is the efficiency of the engine?
science
oe do Orchid Glads grow
science
electricity- give 2 examples of using cells......... ive put clocks and laptops i not sure if this is right. thanks for your help!
crt thinking
Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in t...
aed201
In hindsight, were there some things you could have done differently in terms of this science activity
Physical Science
How many calories of heat are required to raise the temperature of 550g of water from 12.0 degrees celcius to 18.0 degrees celcuis
Science
Does anyone know of a website that has all of the 20 amino acids not just the name but the actual thing like c-oh thing? thanks so much!!!
science(chemistry)
Using condensed electron configurations and Lewis electron-dot symbols to depict the monatomic ions formed from each of the following reactants, predict the formula of the compound the ions produce. 1) K and P
science
Which of the following is NOT true about compounds? A) compounds join in specific ratios according to their masses B) the mass ratio of a specific compound is always the same C) compounds are random combinations of elements D) different mass ratio mean different compounds
science
i did a lab experiement and I do not know what was the control group. I tested the rates of cellular respiration for: Germinated, room temperature peas Non-germinated, room temperature peas Germinated, cool temperature peas Which one is the control group and how do you figure ...
science
For the reaction 2Na(s) + Cl(g) ¨2NaCl(s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl (at STP)?
science
HOw has the artificial limb improved in efficiency over time since it started being used?
science
Which of the following would be the limiting reagent in the reaction shown below? There are 50 molecules of O2 and 50 molecules of H2. 2H2(g) + O2(g) ==> 2H2O(g)
SCIENCE
A uniform ladder which is 10metres long and weighs 300newtons leans with its upper end against smooth vertical wall and its lower end on arough ground.the bottom of the ladder is 6metres from the base of the wall.a man weighing 700newtons stands on the ladder at a point 6metre...
science
describe the energy changes that takes place when a baseball bat is swung
6th grade Science
A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. what are the gentypes of the parents?
science
how far something travels in a certain amount of time is the?
science
whats the word for these 2 defenitions hear it goes if you know your speed and the time you traveled you can find the?ok now the second question how far something travels in a certain amount of time .
science PLEASE HELP URGENT:(
how do i convert 4 g/ml to kg/m^3 ?
Science
Need help on this multiple choice question, thanks! Microscopic airborne particulates that reflect incoming solar radiation and thereby tend to cool the atmosphere are called: a. CFCs b. aerosols c. greenhouse gases d. indoor air pollutants e. hazardous air pollutants Thanks a...
Science
what are three ways sound can be heard
science
explain why certain bugs can walk on water
science
What causes surface tension in water?
science
why do beads of water form on a slippery surface,such as a freshly waxed car?
science
how can i describe how an elevation is shown on topographic map
science
Is holding a book while walking work? Why or why not ok
science
is holding a book while walking work? why or why not that is the question
science
is holding a book while walking work? why or why not
Atmospheric Science
Assuming geostrophic balance, and a 1000 mb gradient of 30 m in 60 nm, what wind velocity does this imply at: Seattle, Washington College Station, TX Veracruz, Mexico San Jose, Costa Rica
Atmospheric Science
Assuming that the base of a building is 330 ft. above sea level, give a total correction to sea level for the station pressure of -664 N/m^2.
Atmospheric Science
Wind is blowing from Lubbock to Abilene at 10 knots. Assuming a uniform and gradual slope between the two cities, what is the implied sign and magnitude of w resulting purely from this orographic influence? Will this wind warm or cool in transit, and by how much?
Science, Technology and Culture
I have to create a case study on The Impact of technology on telecommunications. I do not know where to start or what a case study looks like. I have to have two sources that are interviews. I work for a AT&T Call Center but I don't know how to make a case study about it.
Atmospheric Science
The 15th floor meteorological observatory of the O&M building is 188 ft from the level of the main entrance. Assume that the temperature at the entrance is 25 degrees Celcius, that station pressure is 1000 mb, and the mixing ration is .010 kg/kg. What is the actual (station) p...
science
how can i describe one type of heating system, and describe how it tansfers energy to warm that air inside the rooms?
science
how do i convert 4 g/ml to kg/m^3 ? ur help is appreciated :)
science
What is a chemical reation?
science
Meters per second(m/sec) is a unit of what?
science
does the color of shingles affect the temperature inside your house?
science
which of earth's spheres extends into all others
science
which of earth's spheres extends into all others? i think it would be the Biosphere because overlaps virtually the entire hydrosphere and portions of the atmosphere
science
on a large-scale topographic map, how are airports and major highways treated differently than houses and small features? someone help me with this question?
intergrated science
what is the meaning of meukaemia
science
what are the curved lines on a map?
science
on a large-scale topographic map, how are airports and major highways treated differently than houses and small features?
science
Which of Earth's spheres extends into all others? explain how
science
on a large-scale topographic map, how are airports and major highways treated differently than houses and small features?
science
Which of Earth's spheres extends into all others? explain how
Science
Allie was setting up a fish tank in her room. She needed to find a tank that would fit on her table. What metric unit should she use to record the volume?
science
how have computers changed mapmaking in recent years? And What is the Global Positioning System?
science
explain what the grid of straight and curved lines is on a map
science
how can we differentiate a mineral acid and base from organic ones
Science
Megan, Jose, Austin, and Timothy are driving from Atlanta to Orlando which is a total of four hundred miles. They each left at 6:45 a.m. Everyone has been driving at different average speeds. Figure out the average speed of each driver. 1. Jose's friend is driving from Or...
science
Can you help me balance some equations? I tried and failed several times... 1. calcium hydroxide + phosphoric acid yield calcium phosphate + water 2. copper + sulfuric acid yield copper(II) Sulfate + water + sulfur dioxide 3. hydrogen + nitrogen monoxide yield water + nitrogen...
Marine Science
How much of the oxygen we breathe is produced by pytoplankton? 20%, 35%, 50%, 7% I think the answer is 50%. Am I correct. All of the following are adaptations some phytoplankton have for floating except? 1) Cells have large cavity in the center 2) spines 3) reducing surface ar...
Computer Science
Could someone show me an example of a service class that reads an input file (Java)?
science
how is cell division different than mitosis?
science
how is DNA copied?
Science
a plane traveling 70mph drops a stone and it lands on the ground 8 seconds later. how high up is the plane?
Science
a plane traveling 70mph drops a stone and it lands on the ground 8 seconds later. how high up is the plane?
science
a ball is thrown into the air with an initial velocity of 30m\s and a horizontal velocity of 10m\s. What's it's speed after 4 seconds?
science
what could be the cause of continental drift?
science
you are the ceo of an Explosive company you hired an explosive expert named john and your paying john the explosion expert at $24.50 an hour while on the job there was an explosion that blew john 1 mile into the air as ceo you decide to dock his pay for how long he was in the ...
science
Why does a helium-filled balloon float up when it is released?
science
Which of the following in NOT a physical or chemical change? A)crushing B)weighing C)melting D)passing electric current
science
Yet another question about cells. Is it true that... the colour of a necleus has not yet been discovered? Thanks
science
Is this true, the endoplasimc reticulum (sorry if spelt wrong) is transparent? Thanks
science
I'm confused, are golgi apparatus and golgi bodies the same thing? Thanks for your help.
science
how many grams of KCI can dissolve in 100g of H20 at 40degrees c
science
what is the volume of water ? how do I describe this ?
Science
When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When the gas reacts with wat...
physcal science/physics
what is the kinetic energy in joules of a 1000 kg car travelling at 90km/h
science
it has at lease one meal and one nonmetal element. compound salt
science
A atom of iron(mass 10-25 kg) travels at a speed between 20.0 and 20.1 m/s. How accurately can we determine its position?
science
I need a slogan for neon for this science project my teacher assigned
science
Is this true, animal cells are squire/rectangular and plant cells are circular? If so, why?
science
If I were to make and edible cell, using cake and other materials, such as liquirice and candy or by using a bagel, which do you believe would receive a better grade?
science
can someone help me with this please it is hard! what is the force on a 32kg door slammed with a force of 12N? How do i solve this. thaks
science
what results from tension betweenrock layers?
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