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September 19, 2014

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

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Science
Why are rain forests the most diverse ecosystem? a. They are near bodies of water b. They have a favorable climate c. They are surrounded by mountains d. they have more pollutants that other ecosystems
Thursday, May 22, 2014 at 7:44pm

SCIENCE HELP !!
Suppose humans significantly increased their harvest of catfish, causing a decline in the catfish population. Predict what effect this would most likely have on the population of muskrats. Explain your reasoning.
Thursday, May 22, 2014 at 5:01pm

SCIENCE HELP !!
Decades from now, people will still want to harvest food from the world’s oceans. Describe one action people can take now that will improve ocean fishing in the future.
Thursday, May 22, 2014 at 4:38pm

SCIENCE HELP !!
1. Iron can form ions with different charges. Explain how this is possible. 2. Ions are often formed when two different elements interact with each other. Explain why this happens.
Thursday, May 22, 2014 at 4:04pm

science
An animal that backs on a warm rock during the morning hours but retreats to the shade of the rocks during the middle of the day is mostly likely a (n) A. ectotherm B. endotherm C. vertebrate D. chordate
Thursday, May 22, 2014 at 4:03pm

SCIENCE
which of the following animals is an invertebrate A. goldfish<<<<<<<<​<<this is the answer choice i think B. horse C. turtle D. grasshopper
Thursday, May 22, 2014 at 3:33pm

science
As the nights get longer and the temperatures become cooler some plants A. enter a state of dormancy, or inactivity. B. enter a state where their cells divide and the plant reproduces. C. enter a state where they begin to sprout leaves. D. enter a state where the plant ...
Thursday, May 22, 2014 at 2:33pm

science
What is the different between xylem and phloem? A. xylem carries water and nutrients up to plant's leaves,while phloem carries food down from the plant's leaves to it's roots. B. xylem carries water and nutrients up to plant's leaves,while phloem divides to ...
Thursday, May 22, 2014 at 1:32pm

science
which of the following allows a plant's vascular system to work as a transport system? A. a plant's vascular system is made up of specialized cells that move around the plants as it grows. B. a plant's vascular system is made up of specialized cells that are ...
Thursday, May 22, 2014 at 12:40pm

SCIENCE
2o L of N AND 100l OF h REACTED TO PRODUCE NH3 WHAT IS DECREASE IN VOLUME OF MIXTURE
Thursday, May 22, 2014 at 12:34pm

Science--worked hard, check my answers sum1?
1. What do bone marrow and the epidermis have in common? They are both sites of new cell formation. They both contain structures that assist the body in cooling down if overheating occurs. They both contain or are associated with sensory neurons. They are both involved in ...
Thursday, May 22, 2014 at 5:20am

science
What solubility of hydrogen and nitrogen is in liquid ammonia? Does any formula exist for calculation a solubility of hydrogen and nitrogen in liquid ammonia or do you know specific constants or numbers for this question? Thank you for your answers.
Thursday, May 22, 2014 at 2:00am

Science(chemistry) please help me fast
When you take a block of butter out of the fridge,it is hard.however,after 15 minutes at room temperature it is soft enough to spread.use kinetic theory to explain the above observation
Thursday, May 22, 2014 at 1:16am

Science(chemistry)
When you take a block of butter out of the fridge,it is hard.however,after 15 minutes at room temperature it is soft enough to spread.use kinetic theory to explain the above observation
Thursday, May 22, 2014 at 1:15am

Science--check my answers.
1. Which of the following effects would you expect if red blood cells were shaped like neurons? They would not be able to move as easily through capillaries. **** They would more easily carry out gas exchange in the alveoli. They would not need to be transported through the ...
Wednesday, May 21, 2014 at 10:50pm

Science help!!!!
Passive transport involves movement of substances. A. from areas of lower concentration to area of higher concentration B. from areas of higher concentration to areas of lower concentration C. from areas in which the concentration has reached a balance D. from areas of ...
Wednesday, May 21, 2014 at 4:55pm

science
Passive transport involves movement of substances. A. from areas of lower concentration to area of higher concentration B. from areas of higher concentration to areas of lower concentration C. from areas in which the concentration has reached a balance D. from areas of ...
Wednesday, May 21, 2014 at 4:27pm

science help !!
1. Why is California’s high-speed rail such a groundbreaking effort? 2. Why will it take so long to complete the high-speed rail route?
Wednesday, May 21, 2014 at 3:47pm

Science Check Answer?
1. Name the components of the respiratory system in the order incoming air would encounter them during breathing. A. trachea, pharynx, larynx, alveoli, bronchi B. bronchi, larynx, alveoli, trachea, pharynx C. larynx, trachea, bronchi, pharynx, alveoli D. pharynx, larynx, ...
Wednesday, May 21, 2014 at 3:37pm

science
What does selectively permeable mean???? A. selectively permeable means not letting anything in or out. B. selectively permeable means letting everything in and out. C. selectively permeable means only letting things in but never letting anything out. D. selectively permeable ...
Wednesday, May 21, 2014 at 3:33pm

Science 1 question
5. Which of the following would be true during the inhalation phase of breathing? A. The lungs are inflated, oxygen concentration is high, and carbon dioxide concentration is low in the alveoli. B. The lungs are deflated, oxygen concentration is high, and carbon dioxide ...
Wednesday, May 21, 2014 at 3:20pm

Science Check Answers?
Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the body into the air D...
Wednesday, May 21, 2014 at 3:16pm

Science
1. Name the components of the respiratory system in the order incoming air would encounter them during breathing. A. trachea, pharynx, larynx, alveoli, bronchi B. bronchi, larynx, alveoli, trachea, pharynx C. larynx, trachea, bronchi, pharynx, alveoli D. pharynx, larynx, ...
Wednesday, May 21, 2014 at 3:13pm

Science help!!!!
What does selectively permeable mean???? A. selectively permeable means not letting anything in or out. B. selectively permeable means letting everything in and out. C. selectively permeable means only letting things in but never letting anything out. D. selectively permeable ...
Wednesday, May 21, 2014 at 3:07pm

Science(chemistry)
Give one word/term for the following descriptions during this type of reaction,the appearance,colour or shape of a substance is changed
Wednesday, May 21, 2014 at 2:58pm

Science
2. Adding a _______________ to an electric circuit would increase the magnetic field around a wire. a.) insulator b.) solenoid c.) resistor d.) conductor My Answer: conductor
Wednesday, May 21, 2014 at 2:46pm

Science (A&P)
Trace the path of food from the mouth to the large intestine and what occurs at each structure. Anything would be helpful because I am having trouble finding the answer.
Wednesday, May 21, 2014 at 2:33pm

Science -Check Answers-
1. A kitchen ceiling light has five light bulbs on it. When one of the lights goes out, the other four bulbs stay lit. This is an example of a series circuit. True OR False My Answer: True 2. Adding a _______________ to an electric circuit would increase the magnetic field ...
Wednesday, May 21, 2014 at 2:07pm

Science
When a cell is infected with a virus, what is produced for future protection? i thought it was good bacteria but i don't think a cell can do that. So confused.
Wednesday, May 21, 2014 at 2:04pm

language arts check
The word simulation originally refers to the act of imitating. What meaning of the word is used in this excerpt from "What Makes Teens Tick?" "In an experiment using a driving-simulation game, he studied teens and adults as they decided whether to run a yellow ...
Wednesday, May 21, 2014 at 1:58pm

Science(chemistry)
Give one word/term for the following description in any given chemical compound,the elements always combine in the same proportion with each other
Wednesday, May 21, 2014 at 1:55pm

Science/Health
2. Which of the following explains why the heart is organized so that it pumps blood to two different locations? A. to supply blood to two different sides of the body B. to allow a way for the blood to pick up new blood cells C. to move oxygen-poor blood through the lungs and ...
Wednesday, May 21, 2014 at 1:54pm

science
Write balanced chemical equations (using symbols) for the following reactions 1.hydrochloric acid reacts with magnesium to form magnesium chloride and hydrogen 2.Nitrogen monoxide burns in oxygen to form nitrogen dioxide
Wednesday, May 21, 2014 at 12:05pm

Help Mrs.Sue LA
Courage to Speak “Any volunteers?” Ms. Chavez scanned the class. Ming slouched farther down in her seat. “Come on now, you’ll all have to interview someone sometime this year. No one wants to go first? Okay, I’ll just have to choose someone.” I am...
Wednesday, May 21, 2014 at 10:51am

science
ZnS(aq) + 2HCl(aq) --> ZnCl2(aq) + 2H2S(g) what happens in this reaction means what changes& colour happens????
Wednesday, May 21, 2014 at 9:00am

science
i need to find the enthalpy for COF2 F2 (g) + CO (g) --> COF2 (g) i found -507 but i am not sure if it is correct
Wednesday, May 21, 2014 at 6:58am

Science
To lift a load to the roof, you apply 21 N of force to a pulley. The pulley applies 21 N of force to the load. What is the mechanical advantage of the pulley? A.0 B.1 C.40 D.21
Wednesday, May 21, 2014 at 1:04am

Science
The foreskin, a loose fold of skin that covers the penis is also called the ________. A. Spongiosum B. Androgen C. Prepuce D. Scrotum I think C 99% sure, but my book says its preouce, not prepuce. (Maybe it's a typo?)
Tuesday, May 20, 2014 at 10:44pm

Science
1) A person roller skates down a street heading east. Which of the following would be true about friction in this scenario? a; friction does not affect the skates in the scenario b; friction pulls the skates wheels eastward c; friction pulls the skates wheels downward, toward ...
Tuesday, May 20, 2014 at 10:29pm

Science
Which of the following best describes the movement of an object at rest if no outside forces act on it? a; it will move due to inertia b; gravity will eventually cause it to move c; it will stay at rest due to inertia d; it will stay at rest due to gravity...
Tuesday, May 20, 2014 at 10:24pm

Science
The male sexual response includes erection and orgasm accompanied by ________. A. Ejaculation of semen B. Relaxation C. Restoration D. Stimulation I think it's B,but I also think it is A. Not sure which is the best choice.
Tuesday, May 20, 2014 at 10:16pm

Science
If a loaded truck that can accelerate at 1 m/s2 loses its load and has one-half of the original mass, what acceleration can it attain from the same driving force?
Tuesday, May 20, 2014 at 5:52pm

Science
A skydiver prepares to jump out of a plane. Explain how gravity and air resistance will affect the motion of the skydiver before and after he or she opens the parachute.
Tuesday, May 20, 2014 at 5:21pm

Science
Use Newton's 1st law of motion to explain how wearing a seat belt in a moving car could help prevent injury.
Tuesday, May 20, 2014 at 5:19pm

BUSINESS RESEARCH
A data processing analyst for a research company finds that a preliminary computer run of survey results that his company conducted for a client show that consumers love the client's new product. Based on that information, the analyst buys a large block of the client's...
Tuesday, May 20, 2014 at 12:18pm

Science
A person roller skates down a street heading West. What is true about friction in this case? the choices are 1- does not effect the skates 2- pulls the skates eastward 3- pulls the skates downward toward the center of the earth 4- pulls the skates westward my answer is # 4
Tuesday, May 20, 2014 at 5:30am

Science
If a bowling ball hits a wall with a force of 6 N the wall exerts what force back on the bowling ball? the choices are 0N 3N 6N 12N I think its 6N
Tuesday, May 20, 2014 at 2:29am

Science
A 2,500 kg car moves at 15 m/s squared, 15 m/s squared is the ? a-acceleration b- force c- velocity d-speed My answer is speed
Tuesday, May 20, 2014 at 12:27am

Science
A team of dogs pulled a sled across the snow a distance of 45.5 meters with a horizontal force of 200 newtons. How much work did the team of dogs do?
Monday, May 19, 2014 at 10:20pm

science help
Every individual, including young people, can make decisions to use resources wisely. Use the terms reduce, reuse, and recycle to explain how the students in the image can help minimize solid waste.
Monday, May 19, 2014 at 9:47pm

Science
What is the force that results from a 3,000kg car accelerating at 20.00 m/s2? a;) 150.0 N b;) 3,000 N c;) 3,020 N d;) 60,000 N
Monday, May 19, 2014 at 6:20pm

Algebra
the table shows the results of a survey of college students. find the probability that a student's first class of the day is a humanities class, given the student is female. First class of the day for college students male female humanities 70 80 science 50 80 other 60 70
Monday, May 19, 2014 at 6:13pm

Science
Which biome is found near the polar ice caps?
Monday, May 19, 2014 at 4:40pm

Science
A person roller skates down a street heading West. What is true about friction in this case? the choices are 1- does not effect the skates 2- pulls the skates eastward 3- pulls the skates downward toward the center of the earth 4- pulls the skates westward my answer is # 4
Monday, May 19, 2014 at 4:39pm

Science
If a bowling ball hits a wall with a force of 6 N the wall exerts what force back on the bowling ball? the choices are 0N 3N 6N 12N I think its 6N
Monday, May 19, 2014 at 4:35pm

Science
What are some ways we directly and indirectly release carbon into the atmosphere?
Monday, May 19, 2014 at 3:52pm

Science
Look at the table of radioactive isotypes below. Isotype 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. I'm confused by this. Am I suppose to research each of ...
Monday, May 19, 2014 at 3:10pm

science help
1.how do fossil fuels contribute to air pollution ? a) by releasing carbon dioxide into the air b) by recycling oxygen c) by reversing the greenhouse effect d) by releasing nitrogen into the air 2. How can human population growth affect ecosystems like rain forests a) human ...
Monday, May 19, 2014 at 2:21pm

Science
A person roller skates down a street heading West. What is true about friction in this case?
Monday, May 19, 2014 at 2:01pm

science
1.How can using biomass fuel instead of gasoline in car engines help conserve natural resources ? A) it makes cars run faster b) it burns more fossil fuels c) it reduces the use of coal d) it uses a renewable source 2.Chemical runoff from fields oil spills and erosion is the ...
Monday, May 19, 2014 at 1:47pm

Science
If a bowling ball hits a wall with a force of 6 N the wall exerts what force back on the bowling ball?
Monday, May 19, 2014 at 1:41pm

Science
1. Which of the following types of waste should not be recycled at home? a. expired medicines b. glass bottles c. papers d. plastic bags 2. Which of the following is NOT a method of disposing hazardous wastes? a. burying them in deep rock layers b. incinerating them c. putting...
Monday, May 19, 2014 at 1:14pm

Science
the ventricle in a single-loop circulatory system is responsible for A. receiving blood from the body. B. pumping blood out to the gills. C. pumping blood out to the body. D. receiving blood from the gills. I think it is A or C. Thank You.
Monday, May 19, 2014 at 12:32pm

science
A body with a mass of 10 kg is placed on a smooth surface. It is pulled by a spring balance and the acceleration is 5 m/s². What should the reading on the spring balance be?
Monday, May 19, 2014 at 9:43am

Science
A table, with four legs, weighs 5 N. The area of contact of one of its leg with the ground is 2.5 x 10-3 m². A man, with a mass of 9 kg, sits on the centre of the tabletop. What is the total pressure exerted on the ground by the table with the man on it?
Monday, May 19, 2014 at 9:39am

math
selling price of computer is $75 less than 2 times wholesale price. selling price of a tv is $550, what equation is used to find wholesale price of tv
Monday, May 19, 2014 at 4:00am

Science
Please help! Many people who care about conserving natural resources would choose to use wind energy to power their homes. However, wind power is not an option for people in many parts of the country. Explain what the benefits of wind power are and why it is not available to ...
Sunday, May 18, 2014 at 9:45pm

science help
1.Why do the islands of Indonesia have many volcanoes and experience frequent earthquakes? A.The islands are located at the boundaries of tectonic plates. B.Many hotspots are found near the islands. C.Magma is less abundant under Earth’s crust near the islands. D.The ...
Sunday, May 18, 2014 at 9:09pm

Science : Please Help!
Many people who care about conserving natural resources would choose to use wind energy to power their homes. However, wind power is not an option for people in many parts of the coutnry. Explain what the benefits of wind power are and why it is not available to everyone in ...
Sunday, May 18, 2014 at 6:51pm

language arts
Which sentence is punctuated correctly? a)Briana, my partner for the science project had some great ideas. b)Briana my partner for the science project, had some great ideas. c)Briana, my partner, for the science project had some great ideas. d)Briana, my partner for the ...
Sunday, May 18, 2014 at 6:17pm

language arts
Which sentence is punctuated correctly? A) My grandmother is a smart, funny, kind person. B) Bright,red, leaves drifted down from the maple tree. C) On Thanksgiving we enjoyed a delicious, turkey dinner. D) My friend and I just saw an exciting, science fiction movie. Is the ...
Sunday, May 18, 2014 at 3:53pm

science
5. Which of the following causes clouds to form ? a) air cooling to its dew point b) water vapor condensing as it rises into cooler air c) air pressure rising above normal d) air pressure falling below normal 6. Which of these is least liekly to influence temperature ? a) ...
Sunday, May 18, 2014 at 1:38pm

science
1. meteorologists notice a low pressure area developing over warm ocean water. which type of storm is likely to form? a)tornado b)hurricane c thunderstorm d)blizzard 2. which of the following is a way that some animal's bodies adapt to living in extremely cold climates ? a...
Sunday, May 18, 2014 at 12:14pm

Science
Apart from Water and Salt what other things/substances are neutral?
Sunday, May 18, 2014 at 9:57am

Science Physics
Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.
Saturday, May 17, 2014 at 2:05pm

Science Physics
Madison pushes with a 160-N horizontal force on a 20-kg crate of coffee resting on a warehouse floor. The force of friction on the crate is 80 N. Show that the acceleration is 4 m/s2.
Saturday, May 17, 2014 at 2:03pm

Science help PWEASEEEE
Which of the following is the most effective way to preserve biodiversity? A) captive breeding B) habitat destruction C) habitat preservation D) habitat fragmentation
Friday, May 16, 2014 at 3:04pm

Science
1. Which of the following describes an example of land reclamation? A. After an area is mined for copper, the soil is replaced and new plants are planted. B. After a forest is clear-cut, desertification occurs. C. After a forest is clear-cut, it is mined for copper. D. After ...
Friday, May 16, 2014 at 3:03pm

Science
The greater the change in speed, the less the light wave is reflected. False?
Friday, May 16, 2014 at 10:59am

science
All the processes that form mountain ranges are known as
Friday, May 16, 2014 at 10:42am

Language Arts (english)
1.In general terms, how do the townspeople in “The Handsomest Drowned Man in the World” react to the body which washes up on their shore? 2.Why do the townspeople react to Esteban as they do? What is he to them? 3.What is a fable, how might “The Handsomest ...
Friday, May 16, 2014 at 8:04am

science
Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct electricity. The Swedish scientist Svante Arrhenius coined the term ion (which means wanderer) to explain why solutions of electrolytes will ...
Thursday, May 15, 2014 at 8:45pm

Science
What are reasons you should pick up trash of the ground if the someone leaves it. I have 2, 1. less pollution and 2. keeps earth healthy and clean. I need 2 more
Thursday, May 15, 2014 at 5:24pm

Science
Which one of the following factors would not speed up a chemical reaction
Thursday, May 15, 2014 at 5:07pm

science
Which of the following is the most effective way to preserve biodiversity? (1 point) captive breeding habitat destruction habitat preservation habitat fragmentation
Thursday, May 15, 2014 at 1:40pm

science
1. How is the equator similar to the prime meridian? (1 point) Both the equator and prime meridian are lines that divide Earth into the Northern and Southern hemispheres. Both the equator and the prime meridian are imaginary base lines from which locations of Earth can be ...
Thursday, May 15, 2014 at 1:26pm

Science
Earth travels around the sun at a spreed of 30,000 meters per second. Express this in kilometers per hour.
Thursday, May 15, 2014 at 11:11am

science question
please check i think its B or D. Under which conditions are clouds formed from ice crystals? A.strong winds B.high altiude C.low humidity D.high pressure
Thursday, May 15, 2014 at 10:39am

science
What are lineage bears.
Thursday, May 15, 2014 at 8:35am

Science
Can a recessive trait be a dominant trait as well? I ask this because I have a science problem that says this: A Bb guinea pig crosses with a Bb guinea pig, and four offspring are produced. All the offspring are black. Explain how this could happen. I tried making a Punnett ...
Wednesday, May 14, 2014 at 8:13pm

science
help fill in the blanks please?? Similarities in the early development of chickens and opossums suggest that these organisms share a _________. Niles Eldredge found evidence in trilobite fossils in a pattern of evolution in which short periods of long change are mixed in with ...
Wednesday, May 14, 2014 at 4:26pm

science
how is the equator similar to the prime meridian A. both the prime meridian and equator are lines that divide earth into norther and southern hemispheres B. both the prime meridian and equator are imaginary base lines from which locations of earth can be measured D. both the ...
Wednesday, May 14, 2014 at 3:28pm

science
50 degrees how many ML does it have?
Wednesday, May 14, 2014 at 11:12am

science
A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the roundtrip?
Wednesday, May 14, 2014 at 10:47am

History,geography,life science,mathematic literacy etc
What other careers are have to be done by a those subject for people who dont have information and thnk they just do them to finish school?.
Tuesday, May 13, 2014 at 10:53pm

statistics
A laptop computer manufacturer found that by improving their battery design, they could increase the time that the laptop computer could be used on a single charge. To verify this improvement, they compared a sample of 10 laptops installed with the improved batteries to a ...
Tuesday, May 13, 2014 at 9:35pm

science
show me step by step how to balance 2 H3(PO4)(aq) + 3 CaCl2(aq)
Tuesday, May 13, 2014 at 8:28pm

Physical Science
The specific heat of copper is 0.385 J/g.°C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of copper from 7°C to 29°C? a. Q = 0.385 J/g.°C ` (29°C 7°C) b. Q = 0.75 g ` 0.385 J/g.°C ` 29°C ...
Tuesday, May 13, 2014 at 7:48pm

Science
According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail to push it into a piece of wood, the nail (1 point) 1. creates a friction with the hammer. 2. exerts an equal force on the wood. 3. exerts an equal and opposite force on the hammer...
Tuesday, May 13, 2014 at 7:45pm

science
A sample of 8 grams of NaOH is dissolved into 599 mL of aqueous 0.250 M NaOH (assume no volume change). This solution is then poured into 1.68 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in the final solution? ...
Tuesday, May 13, 2014 at 7:40pm

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