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December 18, 2014

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

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science (help)
What environmental pressures in the past do you think were most important in shaping the human species as it exists today?
Thursday, June 12, 2014 at 10:05am

intro to computer
Search: Your boss is very skeptical about the idea of storing his files up in the cloud rather than on a local storage drive. He asks you to give him the various advantages of cloud storage. Which of the selections below would not be a reason you give him? A. He won’t ...
Thursday, June 12, 2014 at 4:13am

Social Science
Name At least 10 sociologist together with their works
Wednesday, June 11, 2014 at 10:20pm

Science
What is the difference between conserving energy and energy efficiency? What are 5 benefits of conserving energy?
Wednesday, June 11, 2014 at 7:58pm

Keith
The Information Systems Audit and Control Association surveyed office workers to learn about the anticipated usage of office computers for personal holiday shopping. Assume that the number of hours a worker spends doing holiday shopping on an office computer follows an ...
Wednesday, June 11, 2014 at 6:54pm

physical science
Electrons are emitted from a conductor when the conductor is A. subjected to a small voltage. B. exposed to weak light. C. bombarded by high-speed electrons. D. cooled rapidly.
Wednesday, June 11, 2014 at 6:18pm

physical science
When an electron is displaced in a semiconductor, the hole that's left behind is A. attracted to the negative terminal of the voltage source. B. attracted to the anode of the voltage source. C. incapable of carrying a charge. D. considered and impurity in the crystal.
Wednesday, June 11, 2014 at 6:15pm

Econometrics
Hello I have this econometrics question that I have to solve without computer. (True model) yi = B0 + B1x1i + B2x2i + B3x3i + ui (Regression model) ^yi = 13.16 - 0.052(x1i - x21) + 0.2x3i SST = 1833 R^2 = known R^2 (bar) = known n = known with the standard errors being ...
Tuesday, June 10, 2014 at 10:20pm

Statistics
Can someone please help me answer these questions? I have tried every method I know and the computer still keeps marking the answers as incorrect. Thanks for the help! 1) If the number of 18-34 year olds sampled is equal to the value identified in part "a"(value=157...
Tuesday, June 10, 2014 at 6:08pm

Computer programming?
What is jsp structures regrading to computer programming?
Tuesday, June 10, 2014 at 2:47am

Science
The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the top of Pikes Peak and at sea level, where air pressure is 1013 millibars?
Tuesday, June 10, 2014 at 1:23am

Computer Science!!!! Help!!!
The book is not doing anything for me. Anyone know where I can find step by step tutorial of this? Specifically for Visual Basic 2012? And not just a simplified version, I mean EXACTLY how to do this. I have been looking through YouTube, my textbook (An Introduction to ...
Monday, June 9, 2014 at 7:40pm

science
A uniform disk with radius 0.320m and mass 28.0kg rotates in a horizontal plane on a frictionless vertical axle that passes through the center of the disk. The angle through which the disk has turned varies with time according to è(t)= (1.20rad/s)t + (8.70rad/s^2)t^2 my...
Monday, June 9, 2014 at 2:04pm

Engineering science
a 50kg mass is suspended from a spring, causing it to extend by 30mm. calceolate the spring stiffness? The mass is then pulled down a distance of 90mm and released. calculate the frequency of the resulting motion, assuming that this is simple harmonic, calculate the velocity ...
Monday, June 9, 2014 at 1:18pm

science
what is the importance of solid solutions and liquid solutions found at home
Monday, June 9, 2014 at 10:22am

Lea408
can someone please tell me if I am right Like optical scanners, capacitance fingerprint scanners generate an image of the ridges and valleys that make up a fingerprint. But instead of sensing the print using light, the capacitors use electrical current. (Points : 1) True False...
Sunday, June 8, 2014 at 11:00pm

science
calculate the mass of Cuso4.5H2O required to prepare 500 cm3 of a 0.400 m/dm-3 solution
Sunday, June 8, 2014 at 5:56am

science (Eating and allergies)
Well, can people be allergic to seeds? Recently I have been throwing up after eating. I realised everything causing my sickness was seeds, but I feel like no one else has this. I've eaten tomatoes ( I don't like them but it was in my mum's pasta sauce) and the ...
Sunday, June 8, 2014 at 4:29am

Science - chemistry
The osmotic pressure of a solution of MgCl2 is 5.43 atm at 25 oC. How much of the salt is dissolved in 250.0 ml of water?
Sunday, June 8, 2014 at 3:14am

Science - chemistry
The SO2 present in air is mainly responsible for the phenomenon of acid rain. The concentration of SO2 can be determined by titration against a permanganate solution of known concentration as follows: SO2 + MnO4^-1 -> SO4^-2 + Mn2+ (unbalanced) Balance the equation showing ...
Sunday, June 8, 2014 at 3:03am

physical science
A solution that contains a large amount of salt and a small amount of water is said to be a __________ solution. A. dilute B. unsaturated C. concentrated D. saturated
Saturday, June 7, 2014 at 8:43pm

Science
2.38g of black copper oxide is completely reduced by hydrogen to give copper and water. What are the masses of copper and water
Saturday, June 7, 2014 at 5:40pm

Science
2. Two identical masses are moving down a slope. One mass is traveling twice as fast as the other mass. How does the kinetic energy of one mass compare to the other? (1 point) The faster object has the same kinetic energy as the slower object. The faster object has less ...
Saturday, June 7, 2014 at 5:10pm

science
The rest mass of a particle is 10^-24kg.It is moving with a velocity of 1.8*10^18m/s. Calculate its mass when it is in motion.
Saturday, June 7, 2014 at 2:20pm

Science
Classify each of the following as examples of kinetic or potential energy. a) a car driving along a level road. b) an elastic band is stretched to twice its normal length c) a book is at rest on the top shelf of a bookcase d) a lightning bolt produces thunder that travels at ...
Friday, June 6, 2014 at 8:13pm

political science
What institutional factors lead to a slow legislative process? Is the process too slow? If so, what can be done to speed it up?
Friday, June 6, 2014 at 6:47pm

science
10. Which soil layer contains the most humus? (1 point) A horizon B horizon C horizon D horizon its the O horizon, i know this. But i guess it wants you to tell which is closest 14. Which of the following usually causes creep? (1 point) volcanic activity freezing and thawing ...
Friday, June 6, 2014 at 6:45pm

Science
a)How much work is required to lift a 35-kg object from the ground 3.0 m into the air? b) How much gravitational potential energy did this object gain?
Friday, June 6, 2014 at 5:58pm

Science
Calculate the hydroxide ion of a solution of almond extracted of PH 3.8
Friday, June 6, 2014 at 5:43pm

Science
Ms. Sue please help. 8. Which would best reduce the amount of energy needed to pull a wagon up a ramp? (1 point) increasing the slope of the ramp reducing the friction between the wagon wheels reducing the length of the wagon handle increasing the friction between the wagon ...
Friday, June 6, 2014 at 3:52pm

Science - chemistry
Calculate the volume of 0.05 M NaOH which must be added to 100 cm3 of 0.05 M methanoic acid to obtain a buffer of pH 4.23. (Ka for methanoic acid = 1.77 x 10-4)
Friday, June 6, 2014 at 10:11am

Science - chemistry
Calculate the pH of a solution prepared by adding 36 cm3 of 0.15 M methanoic acid to 27 cm3 of 0.20 M NaOH. (Ka for methanoic acid = 1.77 x 10-4)
Friday, June 6, 2014 at 9:50am

Science
WHY IS fecl2 formed instead of fecl3 when iron reacts with dilute hydrochloric acid?
Friday, June 6, 2014 at 5:25am

physical science
When the temperature of the air is 25 degrees Celsius, the velocity of a sound wave traveling through the air is approximately A. 332 m/s B. 320 m/s C. 357 m/s D. 347 m/s
Thursday, June 5, 2014 at 11:18pm

science pls help asap!!!
Which of the following statements about continental glacial movement is correct? A. continental glaciers can only flow uphill b. continental glaciers can flow in all directions*** c. continental glaciers can only flow downhill d. continental glaciers do not flow at all. A ...
Thursday, June 5, 2014 at 8:46pm

Science
Identify the benefits that your space mission might provide for modern society. Explore the possibility of connecting your space mission with satellites that are already gathering information as they orbit Earth. I don't understand what does this mean?
Thursday, June 5, 2014 at 6:23pm

Science
Calculate the work done in each of the following situations. a) A horse pulls a wagon with a force of 1200 N and moves it 15 m. b) A cable lifts an elevator 16 m by using a cable with a tension force of 2500 N.
Thursday, June 5, 2014 at 6:17pm

science 1 question!!!
1. How are continental glaciers different from valley glaciers? (1 point) Valley glaciers can flow in all directions as they move, while continental glaciers move down slopes already cut by rivers. Continental glaciers flow in all directions as they move, while valley glaciers...
Thursday, June 5, 2014 at 5:50pm

science
When you do work to lift an object, what form of energy does the object gain
Thursday, June 5, 2014 at 5:42pm

Earth Science
Hello! I try to do my homework to the best of my ability. I want to make sure that my answers are correct. My answers will be (*). Please help me if you can.... 1. _______ was the first person to propose the idea of moving continents as a scientific hypothesis. A. Antonio ...
Thursday, June 5, 2014 at 12:43pm

science
find the mole fraction of sodium in 25% by massof sodium amalgum
Thursday, June 5, 2014 at 6:59am

science
An unsecured astronaut is floating in deep space. He switches on a hand held drill. The drill bit begins rotating clockwise with high angular velocity. Describe what happens to the astronaut- drill system and explain why.
Thursday, June 5, 2014 at 3:35am

science
UNSCRAMBLE RDOCRROUTINEDEVELOPMENT to make 2 words having to do with the reproductive system
Wednesday, June 4, 2014 at 11:38pm

Science
What are the personal, societal, and scientific implications of alpha-1 antitrypsin deficiency? I googled, but couldn't find any info on this????? please help!!!!!!!!!!1
Wednesday, June 4, 2014 at 11:19pm

physical science
The density of water is the greatest at a temperature of A. 0 Kelvin B. 277 Kelvin C. 273 Kelvin D. 4 Kelvin
Wednesday, June 4, 2014 at 10:35pm

computer programming
1. Scanf 5 names of you and your friends 2. Printf hi to all of them. 3. Ask all of them for their ages. 4. Printf the information in tables as shown below. Name age StudName1 19 StudName2 20 StudName3 18 StudName4 34 StudName5 12 5. Use selection statement to do the following...
Wednesday, June 4, 2014 at 9:31pm

Science
10. Metal cations are atoms that have a positive charge. What type of bond is a metal cation likely to form? (1 point) covalent bond double bond single bond ionic bond my answer is d
Wednesday, June 4, 2014 at 7:59pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Wednesday, June 4, 2014 at 7:34pm

science
Function/ Human Structure/ Plant Structure 1. Gas exchange 1. lungs 1.Stoma 2. Circulation 2. Blood vessels 2.Xylem 3. Water intake 3. mouth 3.Roots 4. Energy intake 4. mouth 4.Chloroplasts 5. Internal support 5. skeleton 5.Stem 6. Energy Storage 1. Fat cells 1. Vacuole 7. ...
Wednesday, June 4, 2014 at 7:21pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Wednesday, June 4, 2014 at 7:09pm

Science ecosystems
Paper Glass Aluminum Wooden ruler Sand Steak Pork chops Salad Bread Hair Cotton fabric Wool Cheddar cheese Can you tell why ? It is urgent ! Are they. Biotic or abiotic
Wednesday, June 4, 2014 at 7:01pm

Science ecosystems
Paper Glass Aluminum Wooden ruler Sand Steak Pork chops Salad Bread Hair Cotton fabric Wool Cheddar cheese Can you tell why ? It is urgent !
Wednesday, June 4, 2014 at 6:30pm

science
As part of their job, meteorologists use data to make weather predictions. How accurate are their predictions? What are other scenarios in which you would use data to make a prediction? How would you defend your prediction using data? can you please tell me in your perspective?
Wednesday, June 4, 2014 at 5:44pm

science
a cube has sides that are 3.0cm long. The mass of the cube is 54g. Calculate the density of the cube.
Wednesday, June 4, 2014 at 4:02pm

Science
Mrs. Sue please help! 1. Which is most likely to be part of an ionic bond? (1 point) an atom with no valence electrons an atom with one valence electron an atom with two valence electrons an atom with three valence electrons 2. To form an oxygen molecule (O2), two oxygen atoms...
Wednesday, June 4, 2014 at 3:51pm

science
suppose we have 10 liters of water in a 20 liter bucket and we submerge a one liter soda bottle with water. The buoyant force on a submerged one liter bottle is equal to?
Wednesday, June 4, 2014 at 1:40pm

science
An object is thrown up with a velocity 30m/s. If the acceleration due to gravity is 10m/s2. Cal. I) its velocity after 2s. II) the maximum height reaches. III) the time taken for the take object to come to rest.
Tuesday, June 3, 2014 at 6:39pm

Science
1. Which of those traits are inherited by a dog? J. barking to go outside K. a preference for certain dog food L. the color of its eyes M. walking on a leash 2. during which stage of its life is a moth most likely to damage clothes? J. egg k. larva l. pupa m. adult thanks!
Tuesday, June 3, 2014 at 2:46pm

Science Please Help Me
1.A weatherman reports, “The storm waves are about 2 meters high and about 35 meters apart.” What properties of waves is the reporter describing? (1 point) A.frequency and wavelength B.wavelength and wave speed C.amplitude and wavelength D.amplitude and frequency 2. ...
Tuesday, June 3, 2014 at 1:53pm

fixed question (science check plz)
A portion of the amino acid sequence of an enzyme from a worm is shown below. -Q-Q-Q-N-N-N-C-C Analyze the same portion of the same enzyme taken from several other organisms. Place them in order from most closely related to the worm most distantly related to the worm. -Q-R-Q-N...
Tuesday, June 3, 2014 at 1:46pm

science (help)
a portion of amino acid sequence of an enzyme froma worm is shown below -Q-Q-Q-N-N-N-C-C analyze the same portion of the same enzyme taken from several other organisms place them is order from most closely related to the worm to the most distantly related to the worm...
Tuesday, June 3, 2014 at 1:43pm

Science Plzz Help
12. Which of the following types of pathogens can only reproduce itself if it takes over host cells? A. fungi B. bacteria C. virus D. protozoa****
Tuesday, June 3, 2014 at 1:17pm

science (check!)
Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between the starfish and green snake? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to look for ...
Tuesday, June 3, 2014 at 12:35pm

Science Please Check My Answers For Me
1. What do bone marrow and the epidermis have in common? A. They are both sites of new cell formation.**** B. They both contain structures that assist the body in cooling down if overheating occurs. C. They both contain or are associated with sensory neurons. D. They are both ...
Tuesday, June 3, 2014 at 12:16pm

PLEASE HELP CHECK ANSWER SCIENCE
5. Which of the following body systems does not rely on the autonomic nervous system to stimulate involuntary events? A. skeletal system B. digestive system C. circulatory system D. respiratory system My Answer skeletal systems
Monday, June 2, 2014 at 11:40pm

Intro to computer
you want ghost your network's computers with a fresh desktop that features Windows 8, as your computer currently using windows 7. You will use Norton Ghost to do this. What source will Norton Ghost utilize to install Windows A. The ISO installation file downloaded from the...
Monday, June 2, 2014 at 10:49pm

Science Plzz Help
1. Which of the following effects would you expect if red blood cells were shaped like neurons? A. They would not be able to move as easily through capillaries.***** B. They would more easily carry out gas exchange in the alveoli. C. They would not need to be transported ...
Monday, June 2, 2014 at 7:21pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Monday, June 2, 2014 at 6:16pm

science
can someone help me with this question from your perspective? I just need an example of how to write a similar question. Earth’s energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then ...
Monday, June 2, 2014 at 5:57pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Monday, June 2, 2014 at 5:08pm

Science Plzz Help
. Which of the following is true about diabetes? A. The pancreas overproduces glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduces glucose, and so insulin must be injected to increase glucose levels. C. The pancreas overproduces ...
Monday, June 2, 2014 at 4:01pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Monday, June 2, 2014 at 3:36pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Monday, June 2, 2014 at 3:04pm

science
I have a question on homework. please help Sea otters are part of a giant kelp ecosystem. They feed on sea urchins that feed on kelp. How does hunting sea otters affect the population of sea urchins and kelp in the ecosystem?
Monday, June 2, 2014 at 2:56pm

Science Plzz Help
5. How do the circulatory system and the endocrine system interact in helping to maintain homeostasis in humans? A. The endocrine system produces hormones that are transported by the circulatory system to target cells when changes are needed. B. The circulatory system provides...
Monday, June 2, 2014 at 2:46pm

Science Plzz Help
4. Which of the following is true about diabetes? A. The pancreas overproduces glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduces glucose, and so insulin must be injected to increase glucose levels. C. The pancreas overproduces ...
Monday, June 2, 2014 at 2:45pm

Science Plzz Help
2. Which of the following best describes the function of the endocrine system? A. It secretes chemical messengers that travel through the blood to signal changes at target cells. B. It binds chemical messengers that travel through the blood from target cells. C. It releases ...
Monday, June 2, 2014 at 2:28pm

Science Plzz Help
Which of the following lists the phases in the correct order with respect to their occurrence in human development? a – maturation of ovaries and testes b – loss of muscle tissue c – development of problem-solving skills d – learning to walk 1. c, b, d, a ...
Monday, June 2, 2014 at 2:25pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Monday, June 2, 2014 at 10:19am

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Monday, June 2, 2014 at 7:54am

science
Which female structure in a flowering plant traps pollen grains? a) pistil b) stigma c) ovary d) anther Answer A
Monday, June 2, 2014 at 7:53am

Science
how is energy produced during a nuclear fusion reaction?
Sunday, June 1, 2014 at 9:23pm

PLEASE HELP W/ COMPUTER SCIENCE?? JUST 1 PROBLEM?
Write a complete Main method that prints Hello, world to the screen. I have tried: MsgBox("Hello, World!") Console.WriteLine("Hello, world") MessageBox.Show("Hello, world") Almost every way that seems correct. Please help me.
Sunday, June 1, 2014 at 8:52pm

science
How would increasing the proportion of land (sand) to water affect the amount of water vapor released?
Sunday, June 1, 2014 at 7:53pm

SCIENCE
WHAT IS THE TRUE SHAPE OF HE MOON? ANSWER:ORBIT IS THAT CORRECT
Sunday, June 1, 2014 at 7:44pm

criminal
The federal CAN-SPAM Act, which took effect January 1, 2004, regulates sending what? A. viruses from one computer to another B. commercial electronic mail messages C. electronic mail to government computers D. electronic mail to minors
Sunday, June 1, 2014 at 7:05pm

Science Plzz Help
3. Which of the following correctly describes how nerve impulses move throughout the body? A. electrical transmission through neurons and electrical transmission between neurons B. chemical transmission through neurons and chemical transmission between neurons C. chemical ...
Sunday, June 1, 2014 at 6:35pm

Science
1. Which of the following sets of terms could be used in a description of the peripheral nervous system? A. motor neuron, interneuron, sensory neuron B. brain, sensory neuron, myelin C. interneuron, spinal cord, autonomic D. somatic, brain, spinal cord 2. Which of the ...
Sunday, June 1, 2014 at 6:16pm

Social Science
How to collect the following: sand, iron filings, salt, ethanol and water.
Sunday, June 1, 2014 at 3:22pm

History
Ms. Sue please help! 3. Read the passage and answer the question that follows: Many slaves preferred not to escape their horrible lives on plantations because their families were often with them. Despite the fact that slaves had no rights, they often found ways to sabotage the...
Sunday, June 1, 2014 at 3:15pm

Science
Name 3 examples of how an abiotic factor could negatively impact an ecosystem:
Sunday, June 1, 2014 at 2:08pm

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
Sunday, June 1, 2014 at 12:25pm

science
Which female structure in a flowering plant traps pollen grains? a) pistil b) stigma c) ovary d) anther Answer A
Sunday, June 1, 2014 at 12:19pm

Science
Hello! I am having some trouble with this one question. I know that the Earth's gravitational force pulls the train towards the ground, but I do not know how the other forces act on the train. Any help is super appreciated:) Q: Explain how gravitational, electrical, and ...
Saturday, May 31, 2014 at 9:56pm

Science
Hello! I need help on this one question. I know that the Earth's gravitational force pulls the train towards the ground, but I do not understand how the other forces act on it. Explain how gravitational, electrical, and magnetic forces act on a maglev train. Thank you for ...
Saturday, May 31, 2014 at 9:51pm

intro to computers
A user calls the help desk and says she cannot install a Windows application on her Windows 8 computer because she is being denied. What is the most likely reason?
Saturday, May 31, 2014 at 2:35pm

physical science
A 0.200 kg ball sits on a shelf 2.00 meters from the floor and then falls to a point 1.00 meter from the floor ignoring any affects due to fiction at this position_______
Friday, May 30, 2014 at 10:11am

Science
1. How does a nuclear power plant produce energy? A. Through solar panels B. Through nuclear fission reactions C. Through geothermal heat D. Through nuclear meltdown reactions<------------ 2. How can human population growth affect ecosystems like rain forests? A. Human ...
Thursday, May 29, 2014 at 7:21pm

Science
How do fossil fuels contribute to air pollution? by reversing the greenhouse effect
Thursday, May 29, 2014 at 5:45pm

Science
how can using biomass fuel instead of gasoline in car engines help conserve natural resources? It burns more fossil fuels It reduces the use of coal<--- It uses a renewable resource
Thursday, May 29, 2014 at 5:12pm

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