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September 2, 2014

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

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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

Science (Please check!)
this device is a burner from an electric stove. it is used to transfer heat to a pot by a. conduction b. convection c. radiation I think c.
Thursday, May 29, 2014 at 4:44pm

Science
1. Which of the following is the most effective way to preserve biodiversity? A) Captive breeding B) Habitat destruction C) Habitat preservation<---- D) Habitat fragmentation 2. A county commissioner wants to reduce the amount of waste sent to the local landfill. Which of ...
Thursday, May 29, 2014 at 4:10pm

Maths ,science
Bongiwe invests R12000 in a savings account at 6,5% per annum compound interest.Calculate how much there will be in the savings account after 5 years
Thursday, May 29, 2014 at 3:28pm

science
How did farming change during the Roman Republic period? A. Farming became more of a business, run by wealthy landowners. B.Farmers began to rely on laborers from distant lands to harvest their crops. C. Farmers began using steam-powered machines to harvest crops. D. Small ...
Thursday, May 29, 2014 at 1:37pm

science
the aim of this experiment is to determine how much lead oxide can be made from 4,0g of lead nitrate.calculate the mass of lead oxide you should make.
Thursday, May 29, 2014 at 12:18pm

Science
Kudzu, a nonnative species, was brought to Georgia for decorative purposes. It is a vine that grows quickly and covers anything in its path. It can also grow on trees and block the sunlight. How is kudzu an environmental issue for Georgia? (1 point) Kudzu can easily be removed...
Thursday, May 29, 2014 at 12:16pm

science
we generrally hear about epidemics after any natural disaster. why
Thursday, May 29, 2014 at 11:39am

science
Which set of terms below would be the best choice to use to describe the components of blood? A. leukocytes, ventricle, atrium, aorta B. platelets, plasma, erythrocytes, leukocytes C. electrolytes, artery, vein, cardiac D. antibodies, hemoglobin, pulmonary, systemic
Thursday, May 29, 2014 at 11:35am

Science
Dichotomous key. What does this mean? Plants with seeds Go to B Plants without seeds Go to B or Arthropods with wings Go to 2 Arthropods without Go to 3 AND WHAT'S THE MEANING OF GO TO 1 or B?
Thursday, May 29, 2014 at 4:25am

Science
1. Which of the following is evidence that groundwater cause erosion and deposition ? a) the formation of meanders b) the formation of large boulders in the desert c) the formation of alluvial fans d) the formation of stalagmites and stalactites in caverns <----
Wednesday, May 28, 2014 at 10:07pm

Science
How is an area’s topography determined? B. By using an areas elevation relief and landforms How do Global Positioning Systems use elevation points on Earth’s system to find latitude and longitude? A. By using signals form a network of satellites How are lakes and ...
Wednesday, May 28, 2014 at 7:22pm

Science
Which part of the ocean floor is part of the continuous underwater mountain range that circles Earth? B. Mid-ocean ridge Which of the following statements describes the difference between physical and chemical weathering? B. Physical weathering is caused by ice, while chemical...
Wednesday, May 28, 2014 at 6:41pm

Science
How is an area’s topography determined? B. By using an areas elevation relief and landforms How do Global Positioning Systems use elevation points on Earth’s system to find latitude and longitude? A. By using signals form a network of satellites How are lakes and ...
Wednesday, May 28, 2014 at 6:28pm

science
2. I need help balancing this Na2(SO4) + CaCl2 „³ NaCl + Ca(SO4)
Wednesday, May 28, 2014 at 4:43pm

science question
Which process tends to occur more quickly, natural selection or artificial selection?
Wednesday, May 28, 2014 at 4:05pm

Science
An object has a mass of 5.0 kg on the surface of the Moon. What would be the object's: a) mass on Earth b) force of gravity on Earth
Wednesday, May 28, 2014 at 3:55pm

Science
An oxygen ion has 8 protons and 6 electrons. What is its charge in coulombs?
Wednesday, May 28, 2014 at 1:09pm

Science
What form of pollution, if any, does each energy source cause? How does the economy influence energy source choices? How does location influence energy source choices?
Wednesday, May 28, 2014 at 1:02pm

science
what is a form of energy that is always transferred from a warmer substance to a cooler one?
Wednesday, May 28, 2014 at 12:32am

science
dilution of a vinegar solution 10x?
Tuesday, May 27, 2014 at 11:20pm

Science
According to the following thermochemical reaction, how much energy is involved in the reaction of 18.5 g of NaHCO3? Is the reaction endothermic or exothermic according to how the thermochemical equation is written? 2NaHCO3(s) + 129 kJ → Na2CO3(s) + H2O(l) + CO2(g)
Tuesday, May 27, 2014 at 5:22pm

physical science
A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine? A. 92 percent B. 94 percent C. 97 percent D. 96 percent
Tuesday, May 27, 2014 at 4:57pm

physical science
A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine?
Tuesday, May 27, 2014 at 4:56pm

science
HOW COME MANY KIDS AREN'T ALOUD TO TALK ABOUT GOD IN SCHOOLS? and evolution still doesn't makes sense.
Tuesday, May 27, 2014 at 4:07pm

science
For the following question, refer to the text below, from the Twelve Tables, Table 1: 6-9. When the litigants settle their case by compromise, let the magistrate announce it. If they do not compromise, let them state each his own side of the case, in the comitium of the forum ...
Tuesday, May 27, 2014 at 3:54pm

Science
1.How are continental glaciers different from valley glaciers? C. Continental glaciers flow in all directions as they move, while valley glaciers mice down slopes already cut by rivers 2. How does the process of plucking cause erosion D. Rocks are mixed with sediment and ...
Tuesday, May 27, 2014 at 3:25pm

Science
Can anyone help me with some topics to write about on what chemistry has to do with mechanical engineering. Anyone's help would be appreciated because I really need to finish this 10 page research paper.
Tuesday, May 27, 2014 at 3:23pm

science (check!)
A biologist made population counts of four different species of animals in an ecosystem. What can you infer from these numbers about possible predator-prey relationships between the species? Species A:155 Species B:17 Species C:2467 Species D:19 A.Species A could be a predator...
Tuesday, May 27, 2014 at 1:05pm

science
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 ...
Tuesday, May 27, 2014 at 12:04pm

science
Which of the following will the serving on the left provide in greater quantity than the serving on the right? (1 point) A. protein B. carbohydrates C. fat D. calories
Tuesday, May 27, 2014 at 11:08am

7th grade science
Energy & Environment Which of the following desribes an example of land reclamation? A)after an are is mined for copper ,the soil is replaced and new plants are planted. B)after a forest is clear-cut ,desertifications occur. C)after a forest is clear-cut,it is mined for copper...
Tuesday, May 27, 2014 at 8:46am

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

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