Thursday
May 23, 2013

# Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

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

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

I.T
How can you protect your computer from fires, dust extreme temperature and power surges?
Sunday, February 10, 2013 at 11:35am

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

Computer language.
a program that prints all the numbers from 1 to 1000 that are divisible by 7. (in C++)
Saturday, February 9, 2013 at 8:13pm

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

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

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
Friday, February 8, 2013 at 2:15am

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

statistics
A study found that 81% of households in the United States have computers. Of those 81%, 92% have Internet access. Find the probability that a U.S. household selected at random has a computer and has Internet access.
Thursday, February 7, 2013 at 10:05pm

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

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

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
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 10:23pm

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
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 6:03pm

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

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
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 8:39pm

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

Math
On friday, a computer was priced at \$800. on the following wednesday, the price was reduced by 15%. On the following friday, the price was further reduced by 20%. what percent of the original price was the final price ?
Tuesday, February 5, 2013 at 7:30pm

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
Tuesday, February 5, 2013 at 5:18pm

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

English-Grammar
Identify how the underlined pronoun in each sentence is being used. 18. Someone sent Ed and (me) a text from an unknown phone. direct object (my answer)indirect object 19. Mr. Simons saw Owen and (us) at the registry. (my answer)direct object indirect object 20. Show Edie and...
Tuesday, February 5, 2013 at 1:41pm

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

Programming
Hello All i am new in dynamics Ax when i am going to connect the C# with Dynamics Ax using logon method i am getting the following error when connecting with DynAX from the it's own server so it connects but when i want to connect it from client computer where i use ...
Tuesday, February 5, 2013 at 3:10am

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

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

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

Computer
I have the answer I was looking for, but do not know exactly how to format it into Excel. Can you please show that format ASAP? This is due tomorrow. Thank you!!! Bank Stmt Balance \$4270.00 Add Rejected Checks 140.00 Deposited Checks 1650.00 Ending Balance \$6060.00 Book ...
Monday, February 4, 2013 at 9:39am

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

computer class
When data, applications, and resources are stored on servers rather than user's computers it is referred to as ?
Sunday, February 3, 2013 at 9:43pm

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

PHYSICS
#1.) A 3.0 kg computer printer is pushed across a desk at a rate of 0.6m/ s2 (towards the right). Determine the force applied to the printer #2.) If a 0.9 kg apple falls from a tree and hits the ground with a force of 8.82 N calculate the acceleration of the apple. #3.) ...
Sunday, February 3, 2013 at 4:23pm

PHYSICS
#1.) A 3.0 kg computer printer is pushed across a desk at a rate of 0.6m/ s2 (towards the right). Determine the force applied to the printer #2.) If a 0.9 kg apple falls from a tree and hits the ground with a force of 8.82 N calculate the acceleration of the apple. #3.) ...
Sunday, February 3, 2013 at 4:23pm

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

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

Computer
what is a computer?
Sunday, February 3, 2013 at 5:33am

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

Alegebra I
I need help with the following questions. Write each answer as a power of 2. Show your work and explain your steps. a. Computer capacity is often measured in bits and bytes. A bit is the smallest unit, which is a 1 or 0, in the computer's memory. A byte is 2^3 bits. A ...
Sunday, February 3, 2013 at 12:25am

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

science
"Reproductive cells and somatic cells are not separated early in development, as they are in animals。 Instead, plant somatic cells that have undergone many rounds of mitosis can undergo meiosis and produce gametes." This is said in my notes under properties of...
Saturday, February 2, 2013 at 2:57pm

World History
During the European medieval period, there was no strong centralized government. However, advances were made in the areas of (a) art, science and communication, (b) agriculture, technology and ship design (c) medical knowledge (d) all of the above
Saturday, February 2, 2013 at 10:54am

science
how many ions of potasium are there in 4.2vgrams of K3PO4 (molar mass=212.264g/mol )
Saturday, February 2, 2013 at 10:17am

physical science
A man pulls a lawnmower with a mass of 50 kilogram accross a lawn, its pulling force is 400 newtons at angle of 50 degrees with a horizontal line.(a) resolve the force into two components , one parallel to the ground and one perpendicular to the ground .(b) explain why it is ...
Saturday, February 2, 2013 at 9:43am

Computer
Write a pseudocode to input 10 temperatures per day for 20 days and output the average per day and the average for the 20 days.
Saturday, February 2, 2013 at 9:29am

science
Sky-High Internet Services Situation: Sky-High Internet Services is a leading Internet service provider in a metropolitan area. The new customer billing system has caused an increase in complaints. Tammy Jones, the office manager, asked you to investigate the situation. After ...
Saturday, February 2, 2013 at 8:38am

Computer (C)
I need help with c programming, i need to fill in the code and I got these (need help with question 4), I run the grader and I only got question 1 right. grader code: gcc worksheet.c; ./a.out 0; if [ \$? -eq 0 ] then echo 'Question 0 Correct'; else echo \$? 'is not ...
Friday, February 1, 2013 at 10:24pm

Science
What do the letters rorpsfgnloadeeasi make. It's supposed to make a mystery phrase. We are learning about plate tectonics.
Friday, February 1, 2013 at 9:39pm

Science
Which of the following is NOT true of bacteria? a. Bacteria change the sugar in milk to lactic acid. b. Bacteria change nitrogen into a form plants can use. c. Bacteria change harmful chemicals into harmless ones. d. Bacteria change oxygen into nitrogen.
Friday, February 1, 2013 at 7:20pm

Science
What happens when bacteria reproduce by binary fission? a. two cells produce a third cell. b. one cell produces two cells. c. one cell produces three or more cells. d. two cells produce two more cells.
Friday, February 1, 2013 at 7:11pm

ENGLISH, HELP?
In the following sentence, which words should be in quotation marks? Did you read the chapter Chemical Reactions in our science textbook, Understanding Chemistry? A. chapter Chemical Reactions B. Chemical Reactions C. Understanding Chemistry I think the answer is B, as it is a...
Friday, February 1, 2013 at 5:09pm

science
i have a project for school and i need to seperate these things using house items. the ojects are marbles rice and coosecoose(its like smaller than rice) so i need to know how to seperate the things. PLZ I NEED HELP!
Friday, February 1, 2013 at 5:06pm

can you proofread my broadcast news stories I had to write.. had to write 3 of them answering the who what when where why and how... if they need revising that's fine.. from what i understand broadcast news stories have to be conversational. 1. THE MICHIGAN STATE ...
Friday, February 1, 2013 at 3:01pm

science
What is the coeffitient of friction for a playground slide and a pair of sports pants?
Friday, February 1, 2013 at 11:49am

Science
1. How do antibodies make antigens useless? (1 point) by attaching to them by dissolving them by covering them with carbon dioxide by hiding them 2. ___________________ occurs when your body already contains antibodies against an infection due to previous exposure. (1 point) ...
Friday, February 1, 2013 at 1:41am

science
The mass of the empirical formula is 100g; the mass of the molecular formula is 200g. What is the value of n?
Friday, February 1, 2013 at 1:34am

science
The mass of the empirical formula is 100g; the mass of the molecular formula is 200g. What is the value of n?
Friday, February 1, 2013 at 1:17am

Physical Science
What is the acceleration of a car that moves from rest to 15.0m/s in 10.0s ?
Thursday, January 31, 2013 at 10:27pm

science
Earthquake energy travels through rock as?
Thursday, January 31, 2013 at 9:47pm

science
An object is projected vertically upwwards at 8 meters per second from the roof of a building which is 60 meters high.it strikes the balcony below in 4 seconds.What is the velocity at which the object strikes the balcony?
Thursday, January 31, 2013 at 9:34pm

You are a technical writer in a large company, working on a training manual to help new users learn the companys computer system. Employees will use your manual in training seninars taught by your company's trainers. The manual will also serve as an on the job reference ...
Thursday, January 31, 2013 at 9:31pm

science
1. Oxygen moves easily out of blood capillaries into cells because ___________. (1 point) the walls are very thin because it is very small because other gases push it out cells need the oxygen 2. Which of the following statements is false? (1 point) Arteries carry blood away ...
Thursday, January 31, 2013 at 8:51pm

science
Where can I find an article about the flu virus?
Thursday, January 31, 2013 at 8:33pm

Science 8R - HW Qs. Check (#2)
How long does it take the earth to revolve around the sun? my answer - 365 days right????
Thursday, January 31, 2013 at 8:09pm

Science 8R - HW Qs. Check
How long does it take the earth to rotate on its axis? my answer - 365 days right????
Thursday, January 31, 2013 at 8:08pm

Science - Waves - Sci. Notation
I know that the formula to calculate the speed of light is c=fλ. F is the frequency, c is the speed, and λ is the wavelength. So how do I calculate the wavelength of a purple light with a frequency of 750 * 10^12 HZ. Frequency is measured in HZ. The speed is measured...
Thursday, January 31, 2013 at 7:12pm

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