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October 21, 2014

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

Post a New Question | Current Questions

Science Plzz Help
1. Which of the following types of joints allows the type of shoulder motion needed by a baseball pitcher to pitch a fastball in a baseball game? A. pivot B. gliding C. hinge D. ball and socket*** 2. Which of the following pairs of joints represents the same type of joint? A. ...
Tuesday, May 6, 2014 at 11:15pm

science
Why can an array of smaller interferometers have a better angular resolution than one large interferometer?
Tuesday, May 6, 2014 at 10:34pm

science 3 questions
A rock climber grasps onto a ledge in the rock wall. How do the bones and muscles in his arm interact to allow him to hold on? photo of a man climbing a rock wall All of the muscles in his arm contract to hold his arm in position. His arm muscles work in pairs so that one ...
Tuesday, May 6, 2014 at 9:30pm

Science
In which way does the circulatory system rely on the skeletal system? Glucose is secreted by compact bone as an energy source for blood. Spongy bone stores minerals needed by blood cells. Bones provide a source of oxygen to blood. Blood cells are produced in bone marrow.
Tuesday, May 6, 2014 at 7:24pm

Science
What type of simple machine is a doorknob? or is it a compound machine?
Tuesday, May 6, 2014 at 6:56pm

physical science
A 2400-kg truck accelerates from 20 m/s to 35m/s in 5s. find the net force on the truck
Tuesday, May 6, 2014 at 6:12pm

science
My answers are in the brackets Nitrogen is cycled through an ecosystem by both plants and ?(animals). Decomposers break down dead organisms and their waste products to release ?(ammonia) in a process called ?(nitrification) These ?(decomposers) can then be used by plants to ...
Tuesday, May 6, 2014 at 3:50pm

science
My answers are in the brackets Nitrogen is cycled through an ecosystem by both plants and ?(animals). Decomposers break down dead organisms and their waste products to release ?(ammonia) in a process called ?(nitrification) These ?(decomposers) can then be used by plants to ...
Tuesday, May 6, 2014 at 3:26pm

science
Nitrogen is cycled through an ecosystem by both plants and ?(animals). Decomposers break down dead organisms and their waste products to release ?(ammonia) in a process called ?(nitrification) These ?(decomposers) can then be used by plants to make amino acids. The process of ...
Tuesday, May 6, 2014 at 3:06pm

science
Is it ture that air molecules have weaker attractions then water molecules? A.Yes B.No
Tuesday, May 6, 2014 at 2:59pm

Science Plzz Help
1. Which of the following types of joints allows the type of shoulder motion needed by a baseball pitcher to pitch a fastball in a baseball game? A. pivot B. gliding C. hinge D. ball and socket*** 2. Which of the following pairs of joints represents the same type of joint? A. ...
Tuesday, May 6, 2014 at 2:26pm

(5) Chemistry - Science (Dr. Bob222)
Consider a buffer made from 0.13 M sodium acetate and 0.10 M acetic acid in 1L. What amount of KOH must be added to cause an increase of the pH by 0.14? A) 0.048 mol B) 0.038 mol C) 0.028 mol D) 0.018 mol E) 0.008 mol
Tuesday, May 6, 2014 at 2:03pm

Chemistry - Science (Dr. Bob222)
Ammonia is a weak base with a Kb of 1.8 x 10-5. A 100.0 mL sample of 0.13 M aqueous solution of ammonia (NH3) is mixed with 87 mL of 0.15 M solution of the strong acid HCl, calculate the pH of the final solution. A) 2.9 B) 11.1 C) 8.8 D) 5.2 E) None of the above
Tuesday, May 6, 2014 at 1:11pm

science check answer
i think its B. Adding a _____________ to an electric circuit would increase the magnetic field around a wire. A. insulator B. solenoid C. resistor D. conductor
Tuesday, May 6, 2014 at 1:08pm

Chemistry - Science (Dr. Bob222)
How many mmol ( millimoles) of HCl must be added to 130.0 mL of a 0.40M solution of methyl amine (pKb = 3.36) to give a buffer having a pH of 11.59? Thank you for your help!
Tuesday, May 6, 2014 at 12:57pm

science
The study of the Earth's magnetic field is known as
Tuesday, May 6, 2014 at 11:50am

Science
A certain gas expands in volume from 2.0L to 6.0L at constant temperature. Calculate the work done by the gas if it expands,against a vacuum.
Tuesday, May 6, 2014 at 11:03am

science
1.   Use the image below to answer the following question. At which position does the diver have the most potential energy?  (1 point) 1 2 3 4 2.   How does the gravitational potential energy of Coaster A compare with that of Coaster B?  (1&...
Tuesday, May 6, 2014 at 10:48am

computer problem
Many day ago my seddenly my computer can't open. The power botton can't light. Please help me.
Tuesday, May 6, 2014 at 9:25am

English
The only acceptable way to divide words at the end of a line is: A. to let the computer decide. B. before the last three letters. C. between syllables. D. after the first three letters. C
Monday, May 5, 2014 at 9:26pm

science
What can be done to prevent mine drainage from damaging the ecosystem
Monday, May 5, 2014 at 9:20pm

Chemistry - Science (Dr. Bob222)
Posted by Ana on Saturday, May 3, 2014 at 11:23am. A zinc-copper battery is constructed as follows (standard reduction potentials given below): Zn | Zn2+ (0.10 M) || Cu2+ (2.50 M) | Cu Zn2+ + 2 e- → Zn(s) Eº = -0.76 V Cu2+ + 2 e- → Cu(s) Eº = 0.34 V The ...
Monday, May 5, 2014 at 9:19pm

English
Identify the sentence that is punctuated correctly. A. The cost and size of computers decreased, as rapidly as processing power increased. B. An operating system is the set of instructions, that directs the overall operations of the computer. C. While database management ...
Monday, May 5, 2014 at 8:18pm

Science
Human blood type is determined by co-dominant alleles. There are three different alleles, know as I^a and I^b alleles are co-dominant and the i allele is recessive. The possible human phenotypes for blood group are type A, type B, type AB, or type O. Type A and B individuals ...
Monday, May 5, 2014 at 7:11pm

Science help ASAP
1. In which way does the circulatory system rely on the skeletal system? Glucose is secreted by compact bone as an energy source for blood. Spongy bone stores minerals needed by blood cells. Bones provide a source of oxygen to blood. Blood cells are produced in bone marrow. 2...
Monday, May 5, 2014 at 5:42pm

Career choices
I do maths lit,acco and life science ,what Career should I follow
Monday, May 5, 2014 at 4:59pm

Science
Explain the energy transformations during skydiving? please note: that I need to EXPLAIN!!! Thank you very much in advance...your help is very much appreciated!! x
Monday, May 5, 2014 at 3:35pm

Science
Explain the energy transformations during skydiving? please note: that I need to EXPLAIN!!! Thank you very much in advance...your help is very much appreciated!! x
Monday, May 5, 2014 at 2:56pm

Environmental Science
Subsistence vs. Industrial Agriculture Which type of agriculture is more sustainable? Why
Monday, May 5, 2014 at 2:46pm

Enviroinmental Science
Which type of agriculture is more sustainable? WhySubsistence vs. Industrial Agriculture?
Monday, May 5, 2014 at 2:44pm

science
Which experimental approach would be the most effective and easiest to clearly determine the evolutionary relationship between these 2 organisms? The 2 organisms are a starfish and snake. A. Sequence the same gene in both species to compare their similarity. B. Dissect ...
Monday, May 5, 2014 at 1:10pm

general science
if an object is thrown 60 m into the air and it takes the object 6 s to get there, what's the average speed of the object? (A) 20m/s (B) 360 m/s (C) 100 m/s (D) 10 m/s
Monday, May 5, 2014 at 12:55pm

Science
Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? A. sequence the same gene in both species to compare their similarity. B. dissect specimens of both species to look for homologous ...
Monday, May 5, 2014 at 11:23am

science (weather & climaate
Science 6 B - Weather and Climate Unit Test i go 2 conections acedemy
Monday, May 5, 2014 at 6:54am

science
How many DALYs are lost by a person who has a life expectancy of 74, contracts HIV/AIDS at the age of 40 and lives until the age of 60? This person receives antiretroviral medication two years after she/he contracts HIV/AIDS until she/he dies. [The weighting for HIV/AIDS ...
Monday, May 5, 2014 at 3:42am

science
How many liters of a 0.80%\% (m/v{\rm m/v}) NaCl{\rm NaCl} solution can be prepared from 500mLmL of a 9.0%\% (m/v{\rm m/v}) stock solution?
Monday, May 5, 2014 at 12:16am

Science
4. To identify the genotype of yellow-seeded pea plants as either homozygous dominant (YY) or heterozygous (Yy), you could do a test cross with plants of genotype ________. (explain your answer) Do we do a punnet square?
Sunday, May 4, 2014 at 4:43pm

Science
Explain the energy transformations during skydiving Explain what happens once a skydiver reaches terminal velocity please help...i cant find any information...please note that I need to EXPLAIN
Sunday, May 4, 2014 at 3:20pm

Science
What are some ethical issues behind cloning? I already said that some people think cloning is like "Playing God".
Sunday, May 4, 2014 at 2:36pm

Science
GCSE Physics-Forces affecting falling objects. My falling object is a skydiver Can you please help me to find the information needed? Nothing too complicated please. Here is a list of things I need to include but I have no idea where this information can be found on the ...
Sunday, May 4, 2014 at 2:18pm

Science
What happens to the resultant force on each point of the skydive?
Sunday, May 4, 2014 at 1:07pm

Science
Explain what happens when a skydiver reaches terminal velocity? thank you...your help is very much appreciated!!
Sunday, May 4, 2014 at 1:06pm

science
Predicting Table of radioactive isotopes below Isotope type of decay Uranium-238 Alpha Nickel-63 Beta Iodine-131 Beta Radium-226 Alpha With the help of a periodic table, predict the element that forms in each case. Explain your reasoning.
Sunday, May 4, 2014 at 11:50am

Physical science
a swimming pool is 25 m long and 10 m wide and is filled to an average depth of 1.5 m how many kilogram of water does it contain?
Sunday, May 4, 2014 at 11:10am

Science
GCSE Physics-Forces affecting falling objects. My falling object is a skydiver Can you please help me to find the information needed? Nothing too complicated please. Here is a list of things I need to include but I have no idea where this information can be found on the ...
Sunday, May 4, 2014 at 10:52am

science
1. Why do earthquakes occur along the San Andreas Fault? a. Two plates meet at the San Andreas Fault and they slide next to each other causing earthquakes b. Two plates converge at the San Andreas Fault causing earthquakes*** c. Two plates pull apart at the San Andreas Fault ...
Sunday, May 4, 2014 at 1:20am

it
Assume you have a computer that contains 1GB of memory.It contains four memory slots. Two of the slots contain 512MB,memory modules.What memory chip(s) would you buy to increase the memory on the computer to 4GB? What is the maximum memory on the computer?
Saturday, May 3, 2014 at 9:32pm

Science
Some teachers explain that meiosis is actually mitosis happening twice. Is this a correct assumption?Why might teachers say this and is it a true statement? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~​~~
Saturday, May 3, 2014 at 6:57pm

science
Homes near warm climate get a) colder winters b)warmer winters c) cold and warm winters d) none of the above When there is moisture in the air from a hot shower, the water is in which form: a) solid b) liquid c) gas d) all of the above
Saturday, May 3, 2014 at 6:27pm

Science
Some teachers explain that meiosis is actually mitosis happening twice. Is this a correct assumption?Why might teachers say this and is it a true statement?
Saturday, May 3, 2014 at 5:15pm

Science
I need help answering the questions below : Homes near warm climate get a) colder winters b)warmer winters c) cold and warm winters d) none of the above When there is moisture in the air from a hot shower, the water is in which form: a) solid b) liquid c) gas d) all of the above
Saturday, May 3, 2014 at 4:58pm

Science
Can someone help me answer some questions. Homes near warm climate get a) colder winters b)warmer winters c) cold and warm winters d) none of the above When there is moisture in the air from a hot shower, the water is in which form: a) solid b) liquid c) gas d) all of the above
Saturday, May 3, 2014 at 12:54pm

Chemistry - Science (Dr. Bob222)
Ammonium metavanadate reacts with sulfur dioxide in acidic solution as follows (hydrogen ions and H2O omitted): xVO3^–^ + ySO2 → xVO^2+^ + ySO4^2–^ What is the ratio of x : y? A. 1 : 1 B. 1 : 2 C. 2 : 1 D. 1 : 3 E. 3 : 1
Saturday, May 3, 2014 at 12:14pm

Chemistry - Science (Dr. Bob222)
Use the following information to answer this question: Cu+(aq) + e- → Cu(s) E° = 0.521V Cu2+ (aq) + e- → Cu+ (aq) E° = 0.153 V. Given these half cell reactions, an aqueous solution of Cu+ ion in the absence of O2(g) : A. will be thermodynamically stable B. ...
Saturday, May 3, 2014 at 11:38am

chemistry - Science
A zinc-copper battery is constructed as follows (standard reduction potentials given below): Zn | Zn2+ (0.10 M) || Cu2+ (2.50 M) | Cu Zn2+ + 2 e- → Zn(s) Eº = -0.76 V Cu2+ + 2 e- → Cu(s) Eº = 0.34 V The mass of each electrode is 200 g. Each half-cell ...
Saturday, May 3, 2014 at 11:23am

chemistry - Science
A zinc-copper battery is constructed as follows (standard reduction potentials given below): Zn | Zn2+ (0.10 M) || Cu2+ (2.50 M) | Cu Zn2+ + 2 e- → Zn(s) Eº = -0.76 V Cu2+ + 2 e- → Cu(s) Eº = 0.34 V The mass of each electrode is 200 g. Each half-cell ...
Saturday, May 3, 2014 at 7:30am

Chemistry - Science
A fuel cell designed to react grain alcohol with oxygen has the following net reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) The maximum work that 1 mol of alcohol can yield by this process is 1320 kJ. What is the theoretical maximum voltage this cell can achieve?
Saturday, May 3, 2014 at 7:06am

Science
What is a species that has various dominate and recessive trait? What is the cross with the species that shows how the dominant and recessive traits are passed on to offspring?
Friday, May 2, 2014 at 6:57pm

Science
How do sound waves travel between a boat and a submarine in sonar technology? A. Because of water particles. B. Because of water waves. C. Because of water ripples. D. Because of water currents. Is it A?
Friday, May 2, 2014 at 5:49pm

Science question?
How does adaptation explain the patterns of distribution of plant and animal species in the world?
Friday, May 2, 2014 at 5:39pm

Science
Am I correct? Which of the following is an example of human impact on climate changes? • the greenhouse effect • changes in solar output • global warming • changes in the tilt of Earth's axis
Friday, May 2, 2014 at 2:51pm

chemistry chem science
A portable CD player that draws 160 milliamperes of current is powered by Ni-Cd rechargable batteries. Compute the mass of Cd consumed when a disk is played for 35 minutes. (enter your answer in grams)
Friday, May 2, 2014 at 10:37am

Science
Niles Eldredge found evidence in trilobite fossils of a pattern of evolution in which short periods of large change or mixed with longer periods of little or no change. This Pattern Is Called ___________? I'm stumped on this question, can anyone help me?
Friday, May 2, 2014 at 10:29am

Science
How do sound waves travel between a boat and a submarine in sonar technology? A. Because of water particles. B. Because of water waves. C. Because of water ripples. D. Because of water currents. B?
Friday, May 2, 2014 at 12:48am

science
Discuss the relationship between the size and weight of an object and the amount of friction that is present. Sports such as soccer involving running, stopping, jumping, and kicking. Discuss how friction helps players. Please help, I am stuck and confused.
Thursday, May 1, 2014 at 11:30pm

science
Discuss the relationship between the size and weight of an object and the amount of friction that is present. Sports such as soccer involving running, stopping, jumping, and kicking. Discuss how friction helps players. Please help, I am stuck and confused.
Thursday, May 1, 2014 at 10:59pm

science Notes?
What does the term adaptation mean? How does adaptation explain the patterns of distribution of plant and animal species in the world? how matter moves through the biosphere. State how energy moves through the biosphere.
Thursday, May 1, 2014 at 10:14pm

science
In an effort to reduce global warming, individuals and companies have been buying __________________ to fund restorative projects.
Thursday, May 1, 2014 at 7:18pm

science
if new information about the behavior of atoms is discovered and verified, then revisions will need to be made to the current _______ ?
Thursday, May 1, 2014 at 7:05pm

Science
Which of the following demonstrates that reactants and products are chemically different? A. Zn + 2HCl -> 2HCl + Zn B. Zn + 2HCl -> H2 + ZnCl2 C. H2O + C4H10 -> H2O + C4H10 D. C4H10 + H2O -> C4H10 + H2O
Thursday, May 1, 2014 at 7:00pm

science
Johnny left a glass of milk on his bedside table for a week, and it spoiled. at the end of the week, the glass contained a yellow liquid with lumpy white chunks, and there was a terrible order. what can be concluded? A. the milk has undergone a physical change. B. the mass of ...
Thursday, May 1, 2014 at 6:33pm

Asap science check my answer plz?!
Fill in the Blank: 14. The energy role of the first organism in a food chain is always a(n) ___________. A: Producer 15. Water is a(n) __________ factor in all ecosystems that all living things require. A: Abiotic 16. ___________bacteria carry out the conversion of gaseous ...
Thursday, May 1, 2014 at 5:46pm

Pysical science
what is the volume of iron (p=7.9 g/cm3) that has a mass of 0.05kg
Thursday, May 1, 2014 at 5:35pm

science
A 0.63kg{\rm kg} mass vibrates according to the equation x=0.30cos7.00tx = 0.30 \cos 7.00 t, where xx is in meters and tt is in seconds. Determine the amplitude.
Thursday, May 1, 2014 at 5:26pm

science
Which of the following illustrates mechanical weathering? A. Carbonic acid weathers marble limestone B.As plants grow, they produce weak acids that slowly dissolve rock C.Oxidation causes weathering in rock<--- D.Repeated freezing and thawing in rocks causes weathering
Thursday, May 1, 2014 at 3:10pm

science
Which of these statements about saltwater is correct? Saltwater freezes at a lower temperature Saltwater freezes at a higher temperature<--- Saltwater does not freeze at any temperature. Saltwater’s freezing point depends on the temperature of ocean floor
Thursday, May 1, 2014 at 3:05pm

Buying A Car
Which one of these statements is true about a "bumper-to-bumper" warranty. A. Normal wear and tear is NOT covered by the warranty. B. All expenses except gasoline and routine oil changes are covered by the warranty. C. Every part and system is covered without ...
Thursday, May 1, 2014 at 1:39pm

Science
Hello. I need help with science questions. Could you please check these answers for me? Thank you very much! 1. Which of the following traits is acquired A. the number of petals that grow in a plant's flowers B. the wing shape of a wild bird C. the ability of some gorillas...
Thursday, May 1, 2014 at 1:32pm

science
A student is trying to identify the different forms of energy described in the following chart:
Thursday, May 1, 2014 at 11:14am

Science
How much work is done on the trolley by the force,if the force applied is 200N at an angle of 37 degrees to the horizontal and the trolley moves a distance of 10m.
Thursday, May 1, 2014 at 10:26am

Statistics
Carol has data on the causes of violent outbursts among kindergarten children. She used a "shot-gun" approach to hypothesis testing by asking the computer to produce p-values for 300 quickly chosen hypothesis tests. She shared her glee with fellow researchers, noting...
Thursday, May 1, 2014 at 8:27am

8th grade science
If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called?
Thursday, May 1, 2014 at 7:59am

science
is that electric current occupies space?
Thursday, May 1, 2014 at 2:11am

science
How are restriction enzymes important tools in genetic engineering?
Thursday, May 1, 2014 at 1:13am

Science(chemistry)
how much energy is needed to change 53 grams of water from -53 degrees celsius to 160 degrees celsius ?
Wednesday, April 30, 2014 at 9:20pm

computer
You suspect that the failure of a router or of a transmission line connecting routers has left some of your important servers unavailable to clients at your site. How could you narrow down the location of the problem using what you learned in this chapter?
Wednesday, April 30, 2014 at 7:59pm

Statistics
Carol has data on the causes of violent outbursts among kindergarten children. She used a "shot-gun" approach to hypothesis testing by asking the computer to produce p-values for 300 quickly chosen hypothesis tests. She shared her glee with fellow researchers, noting...
Wednesday, April 30, 2014 at 7:25pm

Computer
A router receives an IPv4 packet. The source ip address is 10.55.72.234. the destination host is 10.4.6.7. the TTL value is 1. The protocol field value 6. What will the router do with this packet?
Wednesday, April 30, 2014 at 6:03pm

science
Glucose is a simple sugar made up of carbon, hydrogen, and oxygen. What kind of molecule is glucose? A. Glucose is protein. B. Glucose is a nucleic acid. C. Glucose is an organic molecule. D. Glucose is an inorganic molecule
Wednesday, April 30, 2014 at 5:22pm

Computer Programming I
Following is my Project 2. In Project 1, I wrote a program to draw square, rectangle and triangle and this is its second part. I could not figure it out how to do it. Any guidelines and suggestions would be highly appreciated. Project 2: Our customer was pleased with the ...
Wednesday, April 30, 2014 at 4:19pm

life science,maths lit,geography,tourism
is it possible 4 me 2bcum a social worker?
Wednesday, April 30, 2014 at 4:08pm

Chemistry
Which substance has the higher entropy? a.) a sample of pure silicon (to be used in a computer chip)or a piece of silicon containing a trace of another element such as boron or phosphorus b.) O2(g) at 0 degrees C or O2(g) at -50 degrees C c.) I2(s) or I2(g), both at room ...
Wednesday, April 30, 2014 at 2:35pm

science
In the ocean, there are areas where there are very few living things. ____________ is the term that describes when this happens to a natural area.
Wednesday, April 30, 2014 at 2:34pm

science
2.Imagine two artificial satellites orbiting Earth at the same distance. One satellite has a greater mass than the other one. Which of the following would be true about their motion?   (1 point) The satellite with the greater mass is being pulled toward Earth with ...
Wednesday, April 30, 2014 at 2:30pm

science
the energy stored in atoms is released when electricity is made with ____________ power.
Wednesday, April 30, 2014 at 1:32pm

science
A homeowner determined that he used 114 gallons of oil every month to heart his home during the winter. this information would be considered part of his ___________________.
Wednesday, April 30, 2014 at 12:55pm

Science
a 5 kg skateboard moves at 7 m/s^2 . What is the force of the skateboard? 35 N<--- 12 2 m/s^2
Wednesday, April 30, 2014 at 11:47am

language art pllz help
1. Which of the following would most likely connect with the speaker of "Growing Pains"? (1 point)a teen whose parents are going through a difficult divorce a teen who has let down one of her best friends a teen whose mother is often too busy to spend time with him ...
Wednesday, April 30, 2014 at 11:27am

Science
If a rock weighs 100 pounds on Jupiter, what will it weigh on earth?
Wednesday, April 30, 2014 at 1:06am

Science
If you spin a water-filled cup horizontally on a flat table, did you exert force on the water?
Tuesday, April 29, 2014 at 11:36pm

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