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August 27, 2014

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

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science (check plz)
8.two species have a relationship with one another in an ecosystem. suppose one of these two species goes extinct. which type of relationship did the two have if the surviving species population increases after the other goes extinct? A.the extinct species was a parasite in a ...
Monday, May 26, 2014 at 11:48pm

Math
These two box and whisker plots show the results of a science test. Plot 1: Minimum:65, Maximum:95, Median:82, 1st Quartile:67, 3rd Quartile:88 Plot 2: Minimum:57, Maximum:100, Median:92, 1st Quartile:78, 3rd Quartile:93 What does this information tell you about the results? A...
Monday, May 26, 2014 at 10:20pm

science (help)
18.Fertilizers and pesticides applied to farm fields in Pennsylvania have made their way down into the Chesapeake Bay in Maryland. This is an example of _________________ pollution. 19.Before beginning any land development project, people should carry out a(n) ...
Monday, May 26, 2014 at 9:55pm

science (check!)
when fossil fuels are burned they produce _____, the main greenhouse responsible for global warming trends. ----MY ANSWER: emission?---
Monday, May 26, 2014 at 9:11pm

science (CHECK plz)
8.two species have a relationship with one another in an ecosystem. suppose one of these two species goes extinct. which type of relationship did the two have if the surviving species population increases after the other goes extinct? A.the extinct species was a parasite in a ...
Monday, May 26, 2014 at 8:55pm

science
what valency ?how can we find valency?explain.
Monday, May 26, 2014 at 8:45pm

science (CHECK plz)
8.two species have a relationship with one another in an ecosystem. suppose one of these two species goes extinct. which type of relationship did the two have if the surviving species population increases after the other goes extinct? A.the extinct species was a parasite in a ...
Monday, May 26, 2014 at 7:10pm

science (check plz)
3.A nonnative species of animal is introduced into A healthy ecosystem.In its new environment, this species has no predators, although it preys on several native animals in the ecosystem.Make a prediction about the biodiversity and health of this ecosystem in the future. A....
Monday, May 26, 2014 at 6:13pm

science (check!)
2.A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particulary hot, dry period that causes a snake population to decline what could the biologist hypothesize bout the roles of these two species? A.the lizard preys ...
Monday, May 26, 2014 at 5:52pm

other science checkkk
1.Which of the following could be true of two different species that have a competitive relationship in the same ecosystem? A.One species preys on the other***. B.The relationship is mutually beneficial. C.They share the same niche. D.One species benefits, while the other is ...
Monday, May 26, 2014 at 5:14pm

last science check
6. Which of the following pairs of words correctly completes the blanks in the sentence below? Depletion of_____ has been halted by a ban on the manufacturing of____ .. the ozone layer, chlorofluorocarbons. acid rain, carbon dioxide. fossil fuels, gasoline. global warming, ...
Monday, May 26, 2014 at 4:47pm

science (check plz)
7. Which of the following is a form of pollution triggered by formation of a gas, and can have dramatic effects on the health of a coral reef ecosystem? fog pesticides acid rain** oil spill
Monday, May 26, 2014 at 4:38pm

science (check!)
4. Use of which of the following does not contribute carbon dioxide to the environment? refrigerator charcoal grill computer bicycle*** --------------- 5. Why does buying food that is grown in your local area help prevent loss of biodiversity? Local plants and animals are less...
Monday, May 26, 2014 at 4:16pm

science (check!)
2. A salamander is a keystone species in a forest ecosystem with high biodiversity. This species migrates from woodland areas to a local stream to reproduce. If a road is built that cuts off the woodland areas from the stream, what effect will this have on the forest ecosystem...
Monday, May 26, 2014 at 4:07pm

science (check!)
1. Which of the following statements is true? Biodiversity provides additional resources that raise the carrying capacity of an ecosystem. Biodiversity increases an ecosystem’s ability to withstand changes*** Biodiversity makes an ecosystem more difficult to destroy. ...
Monday, May 26, 2014 at 3:54pm

science (check!)
3. Which of the following determines the carrying capacity of a particular population by an ecosystem? keystone species pioneer species limiting factors renewable resources***
Monday, May 26, 2014 at 3:48pm

science
In the circuit above, the resistors all have the same resistance. The battery, wires, and ammeter have negligible resistance. A closed switch also has negligible resistance. Closing which of the switches will produce the greatest power dissipation in R2? S1 only S2 only S1 and...
Monday, May 26, 2014 at 12:39pm

Science 207
3. How would the “weather” be affected if the water was at a decreased temperature? What about at an increased temperature?
Monday, May 26, 2014 at 1:53am

science
If a 0.5 L container of juice contains 15 g of sugar, what's the concentration of sugar? A. 30 g/L B. 3.33 g/L C. 45 g/L D. 7.5 g/L I think b
Monday, May 26, 2014 at 1:38am

Science
To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of ____________________ ...
Sunday, May 25, 2014 at 9:56pm

Earth Science Regents!!!
Two students in different parts of New York State measure the altitude of Polaris is above the horizon. The student near New York City finds the angle to be 41 degrees. The student near Massena finds the angle to be 45 degrees. Which state is best supported by this information...
Sunday, May 25, 2014 at 4:54pm

intro to computers
You are shopping for a new computer. You see the memory listing as 1GBX4. What does this mean? A. 4 DDR first generation DIMMs B. 1 GB of memory made up of 4 DIMMs C. 4 GB of memory made up of 4 DIMMs D. 1 DDR fourth generation DIMMS ????
Saturday, May 24, 2014 at 6:02pm

computers
Which type of USB connector is always plugged into the computer to connect an external device? a. type A B. type B c. Micro d. Mini
Saturday, May 24, 2014 at 10:15am

Science
When a particle of charge 10 mueC is brought from infinity to a point P, 2.0 mJ of work is done by the external forces. What is the potential at P?
Saturday, May 24, 2014 at 1:08am

Science
Five groups of rats are fed identical diets except for the amount of vitamin A that they receive. Each group gets a different amount. After three weeks on the diet, the rats are weighed to see if the amount of vitamin A received has affected their weight. Independent Variable...
Friday, May 23, 2014 at 8:27pm

science
____________________ are nerve cells that carry response information to muscles and organs. IS IT TISSUE
Friday, May 23, 2014 at 6:46pm

science
Which term refers to the diffusion of water through a membrane? A. osmosis B. engulfing C. active transport D. facilitated transport
Friday, May 23, 2014 at 5:59pm

science
Enzymes are important because they A. contain water. B. speed up chemical reactions. C. contain genetic material. D. help the cell maintain its shape.
Friday, May 23, 2014 at 5:45pm

Science
12. Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he's going to create and experiment to find out if there is something better. a. type of tissue b. Justin c. amount of tissue d. mess of the snots the tissue can ...
Friday, May 23, 2014 at 5:29pm

science
A rock tumbles straight down from a cliff, its moving at 20 m/s when it hits. What is the height of the cliff? The mass of the rock is 8 kg. a) 2.5 m b) 400 m C) 20.4 m d) 160 m
Friday, May 23, 2014 at 4:18pm

Science
5. Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he's going to create and experiment to find out if there is something better. What is 1 constant? a. type of tissue b. Justin c. amount of tissue d. mass of snot ...
Friday, May 23, 2014 at 4:04pm

Science
How can you measure the angle of incidence and refraction with a protractor? If not, what are some tools I can use which are found at home?
Friday, May 23, 2014 at 3:29pm

science
Animals with nerve nets have A. no specialized neurons. B. sensory neurons but no interneurons. C. interneurons but no sensory neurons. D. only motor neurons
Friday, May 23, 2014 at 2:31pm

science
the neurons that transmit the signal to your foot to kick a soccer ball are called A. reflexes B. motor neurons C. sensory neurons D. interneurons
Friday, May 23, 2014 at 12:34pm

Science--Myanswer Plz, plz
Electric charges that are different attract each other. repel each other. **** exist in pairs. do not interact. Magnetic field lines around a bar magnet are only perpendicular to the magnet. spread out from one pole and curve around to the other. **** cross back and forth ...
Friday, May 23, 2014 at 11:13am

science
An object moves up and down the y-axis with an acceleration given as a function of time t by the expression a equals A sine of omega-t. , whereA. and omega. are constants. What is the period of this motion? Answer omega. 2 pi omega. omega squared times A. 2 pi over omega. ...
Friday, May 23, 2014 at 10:16am

SCIENCE HELP !!
Choose one destination that is represented by a flag. Write a paragraph about the effects of climate change in that destination.
Thursday, May 22, 2014 at 8:11pm

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

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