Saturday
September 5, 2015

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

Computer science(Information Retrieval Architectur
A. Why are inverted files the most typical structure used for search systems? How does n-grams modify the inversion list approach? B. Discuss the similarities and differences between N-gram and PATRICIA TREE approach to indexing.
Monday, April 27, 2015 by Nany

Computer science(Information Retrieval Architectur
a. Describe how the statement that “language is the largest inhibitor to good communications” applies to Information Retrieval Systems. b. Relate this to the challenges in information retrieval that make it difficult to find the information a user is looking for. c. ...
Monday, April 27, 2015 by Nany

Computer science(Information Retrieval Architectur
Consider the use of entity identification and categorization. a. What problems are they trying to solve – what are they trying to do. b. How do they affect the list of processing tokens in an item? c. How do they affect the Document Vector for the item?
Monday, April 27, 2015 by Nany

science
A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 49.0 vibrations in 20.8 s. A given crest of the wave travels 402 cm along the rope in a time period of 14.9 s. What is the wavelength?
Sunday, April 26, 2015 by Desia

science help
Explain how the hooves of the camel are adapted to move in the dessert.
Sunday, April 26, 2015 by Kayla

introduction to computer applications
how is a simulation different from a learning game?
Saturday, April 25, 2015 by tray

science
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 ...
Saturday, April 25, 2015 by Anonymous

Science-Physics
From what height was a brick dropped if it hit the ground with a speed of 4.3 m/s?
Saturday, April 25, 2015 by Desirae

Science
How much force is exerted to lift 750 kg of water in the well against the force of gravity? How much work is done to lift this water .05m? How does this compart to hte work done byt he man in teh treadmill?
Saturday, April 25, 2015 by Megan

physical education
For science fair project interview from an expert: 1. How much should my time improve in 30 days running a mile? 2. Will the type of shoe I wear affect my running time? 3. How will the weather affect my time? 4. Do different track surfaces affect my time? 5 What can I do to ...
Friday, April 24, 2015 by Mason

Science help
Which of the following illustrates conduction as a mode of heat transfer? a) A microwave oven produces electromagnetic waves that transfer to the food in the form of heat*** b) leaving a metal spoon in a bowl of hot soup will make the spoon hot as well c) Pasta rises and falls...
Friday, April 24, 2015 by Destiny

Science
Which evidence from the sea floor shows that tectonic plates move? a) the sea floor is youngest near a mid-ocean ridge and older farther away b) The sea floor is much older than the continents c) mid-ocean ridges form the longest range of mountains on earth d) The sea floor is...
Friday, April 24, 2015 by Destiny

Please Help, I REALLY need it btw-science
1. which of the following is not a method by which minerals form? a) crystallization b) decrystallization c) water evaporation from a solution d) cooling of magma or lava (more will be listed)
Friday, April 24, 2015 by Destiny

Computer Architecture!!
How can we find the value in decimal stored in the AC register, after executing the MARIE program
Friday, April 24, 2015 by Anna

Computer Science
What are the types of errors that can be encountered in programs?
Friday, April 24, 2015 by Wenwen

computer sceince
ƒnDefine a new class Coordinator that represent a faculty member who works a certain number of hours each month. In this case, the salary is computed by multiplying the working hours by the hourly payment rate. „σnCreate a new object of class Coordinator ...
Friday, April 24, 2015 by badd

Science
uppose some natural disaster occurs and a species of finch is forced to relocate from its original island where us dined on cactus flowers ti ab adjacent island with many fewer cacti but an overabundance of orchids. what would be the immediate consequences to the species in ...
Friday, April 24, 2015 by Student

Science
A gardener plants several flowering plants of the same species and notices that about 10% of the plants produce larger flowers than the others. He keeps track of the distribution of flower sizes over several years as shown in the table below. What explains these observations? ...
Friday, April 24, 2015 by Anonymous

science
Which of the following is not a characteristic of igneous rocks? a. Igneous rocks are formed when molten rock cools and hardens. b. Igneous rocks have crystal grains. c. Igneous rocks are larger in size because the rock cooled more slowly after the hot lava came out from the ...
Friday, April 24, 2015 by basketball&batman

science
__________ rocks forms when a rock is changed by heart,pressure, or chemical reactions. a) Igneous b) Sedimentary c) Metamorphic d) Chemical i think its c
Friday, April 24, 2015 by basketball&batman

physical education
For science fair project interview from an expert: 1. How much should my time improve in 30 days running a mile? 2. Will the type of shoe I wear affect my running time? 3. How will the weather affect my time? 4. Do different track surfaces affect my time? 5 What can I do to ...
Friday, April 24, 2015 by Mason

science
Are BEVs or hydrogen fuel cell vehicles a more promising transportation technology for the future? (This is question #3 from p. 608.) Should car companies be required to produce electric cars?
Thursday, April 23, 2015 by Abby

Some research questions
I missed this week until today, and my science professor told me I have until tomorrow to do at least 50% of this project. Project: A 20 slide power point presentation over economy and environmental issues in Bolivia. Must include pictures, extra points for sound. Country ...
Thursday, April 23, 2015 by Kattliveslife

science
Infer how zebra mussels change the biotic conditions in an aquatic ecosystem. How could the changes affect the biodiversity of the ecosystem?
Thursday, April 23, 2015 by thi

Science
What are some home appliances that can cause phase changes?
Thursday, April 23, 2015 by Mariam

math
in a science experiment the temperature of a liquid dropped 30 degrees over 6 hours what integer shows the average hourly temperature change of the liquid
Thursday, April 23, 2015 by steven carpenter

Science
the force of gravity on jupiter is much stronger than the force of gravity on earth. which of the following explains why this is true. A. Jupiter's orbit is farther away from the Sun and Earths orbit B. Jupiter has more mass than Earth C. Jupiter's orbit is closer to ...
Thursday, April 23, 2015 by Abby

Science
if 225 ml of 0.25M HCL and 25ml of 2.5M NaOH was used what is the limiting reagent in this experiment?
Thursday, April 23, 2015 by Pat

Science Check
This is the question Consider a wetland ecosystem similar to the one shown in the image below. In this ecosystem are two species: a small fish species and a wading bird species that feeds on the small fish as its main source of food. Oxygen levels are a limiting factor.Suppose...
Thursday, April 23, 2015 by Kareemah

Physical Science
At 27 degrees Celsius and 750 mm Hg, a sample of hydrogen occupies 5.00 L. The space it occupies at STP = 4.49 L. Should the 4.49 L be rounded to 4.5 L? If not, is there a specific rule that explains rounding for this type of problem?
Thursday, April 23, 2015 by Doris

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
Thursday, April 23, 2015 by Andrew

Calculus
(Bees collecting pollen and nectar - Optimization) Many bees collect both pollen and nectar. Pollen is used for protein, and nectar is used for energy. Suppose the amount of nectar harvested during t seconds on a flower is: F(t)=t/(1+t) and that the amount of pollen harvested ...
Wednesday, April 22, 2015 by Corbin

Science
Explain how a thermocouple works. What are thermocouples used for?
Wednesday, April 22, 2015 by Earl

computer programs
How do I start a program containing a single dimensional arrays and function(s) with the output displaying the formula “Y = aX + b” by replacing a and b with the calculated values. Aptitude score Productivity Applicant variable X Variable Y 1 X1 = 9 Y1 = 46 2 X2 = 17...
Wednesday, April 22, 2015 by C programming

Life science
A pure-breeding black coat cat was crossed with a hybrid black coat cat. (a)Represent the diagrammatically .(b)What percentage of the offspring
Wednesday, April 22, 2015 by Bandlalakhe Duma

science
4. A 70.0 g sample of water at 95.00°C is mixed with 50.0 g of water at 135.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. Remember that the heat gained by the cooler water is equal to the heat lost by the warmer water.
Wednesday, April 22, 2015 by Lilian

science
A 30.0 g sample of water at 280. K is mixed with 50.0 g of water at 330 K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. Remember that the heat gained by the cooler water is equal to the heat lost by the warmer water.
Wednesday, April 22, 2015 by Lilian

science
2. A 75.0 g sample of a metal is placed in boiling water until its temperature is 100.00C. A calorimeter contains 100.00 g of water at a temperature of 24.40C. The metal sample is removed from the boiling water and immediately place in water in the calorimeter. The final ...
Wednesday, April 22, 2015 by Lilian

Science- Earth's History- 1 question
Which of the following events occurred during the Mesozoic era? a. Dinosaurs became common on land. b. Whales and dolphins evolved in the oceans. c. Reptiles evolved on land. d. The supercontinent Pangaea formed. i think its c
Wednesday, April 22, 2015 by basketball&batman

science
the sun photosphere gives off radiation that reaches earth as what
Wednesday, April 22, 2015 by lawrence adams

Statistics
A modification is made to a computer component to try to increase its mean time between failures, which was originally 520 hours. Tests on a simple random sample of 10 modified components resulted in the following times (in hours) between failures. Assume that the sample comes...
Wednesday, April 22, 2015 by Giselle

Science
What is the equilibrium concentration of silver ions at 25 degrees C in a 1.0-L saturation solution of silver carbonate to which .20 mole of NaHCO3 has been added? The Ksp of Ag2CO3 is 8.1 x 10-12 at 25 degrees C
Tuesday, April 21, 2015 by Jade

Science
On an inclined plane, how much force will move a resistance of 30 kg? I know that 5 kg of force will move a resistance of 15 kg, but cannot see the connection between the two numbers to finish the rest of the examples.
Tuesday, April 21, 2015 by Marcia

Science
How do you think that a plane could initialize the dragging? (Think of the parts of the wing that move)
Tuesday, April 21, 2015 by Aimee

Science
The effect _______ explains how fast air moves across a surface, the ____ pressure that presses on that surface. In contrast, the more ____ that air moves, the more of _____ there will be. I'm sorry that it might not make sense, I translated it from French. I tried using ...
Tuesday, April 21, 2015 by Alex

Science
What are the four flight forces? Give a brief description of each.
Tuesday, April 21, 2015 by Sam

Science
If you lift a 15 °C unsaturated air bubble from the surface to 1 km height, what would be its final air temperature?
Tuesday, April 21, 2015 by Katelyn

Science
If you lift a 15 °C air bubble from the surface to 1 km height and the environmental temperature at 1 km is 10 °C, what stability does the atmosphere demonstrate at this level?
Tuesday, April 21, 2015 by Katelyn

science
Which of the following is called the "master gland"? A. Pancreas B. Adrenal C. Thyroid D. Pituitary
Tuesday, April 21, 2015 by yogita

science
Which of the following best describes the overall function of hormones? A. To control physiological processes in the body B. To stimulate the growth and maturation of body organs C. To provide a pathway for nerve messages D. To determine masculine or feminine reproductive traits
Tuesday, April 21, 2015 by yogita

Finance
Eric Jones develops computer software for a major company. Eric's salary and bonuses total $82,000, but he pays $29,233 in income and social security taxes. If Eric's annual debt repayments are $33,620, what is his debt service-to-income ratio?
Tuesday, April 21, 2015 by Dena

science
A boy is pushing a lawn mower with a force of 200N.The force makes an angle of 20° with hprizontal . 1. determine the force applied to move the lawn mower forward 2. Maximum height reached by an object.
Tuesday, April 21, 2015 by Tshilidzi

MATH
Really need help with this: You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a late fee of $39....
Tuesday, April 21, 2015 by Sandy

Pysics science
The resultant of vectors A⃗ and B⃗ has a magnitude of 20 units. A⃗ has a magnitude of 8 units, and the angle between A⃗ and B⃗ is 40o . Calculate the magnitude of B⃗
Tuesday, April 21, 2015 by Sammmy

Ethics and Tech
Computer simulations can: A. accurately predict the weather a month in advance. B. save automobile manufacturers time and money as they develop new cars. C. prove our planet is overpopulated. D. All of the above Im confused between A and D
Tuesday, April 21, 2015 by Amy

Ethics in Tech
The Ariane 5 satellite launch vehicle failed because: A. a faulty on-board computer caused the other computers in the network to crash repeatedly. B. a bad sensor fed faulty information into the flight control computer, causing it to fail. C. the rocket's on-board computer...
Tuesday, April 21, 2015 by Amy

Science
In what ways are electric generators and motors similar? In what ways are they different?
Monday, April 20, 2015 by Anonymous

Science
a 9 kg bowling ball rolls off a table and strikes the ground. if the ball isi n the air for 0.5 seconds, how fast is the ball moving when it hits the ground?
Monday, April 20, 2015 by Rawr

Physical science
A hydraulic lift is used to lift a heavy machine that is pushing down on a 3.0 m2 piston A1 with a force F1 of 1200 N. What force F2 needs to be exerted on a 0.090 m2 piston A2 to lift the machine? im having problems tring to solve it can you please help me?
Monday, April 20, 2015 by Brandon

Science (Chemistry)
Why do ionic materials dissolve so well in water, but not in Hexane?
Monday, April 20, 2015 by Romika

Math
Really need help with this: You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a late fee of $39....
Monday, April 20, 2015 by Sandy

History
How were William Lloyd Garrison and the Rev. Elijah Lovejoy alike? Both lived in Boston and were Underground Railroad conductors. Both printed newspapers with antislavery messages in the North. Both used their houses as Underground Railroad stations and risked their lives for ...
Monday, April 20, 2015 by Emma

Science
When evolution was first proposed, which of the following was used as evidence to support the idea? 1.observations of nature 2.laboratory experiments 3.extensive fossil collections 4.genetic sequences 1.?
Monday, April 20, 2015 by Sarah

Science
The mass of 1 liter of water is approximately 1000g. If you consume 1 liter of water,ow many water molecules did you consume?
Monday, April 20, 2015 by Kelley

Science
The diagram below shows a process in Earth's crust. Which of the following statements best describes the process in the diagram. A Converging plates from Mountains B Converging plates from Volcanoes C Diverging plates form Mountains D Diverging plates form a rift valley I ...
Monday, April 20, 2015 by Anonymous

science 8th (:: 1 question
The ball in the image below is rolling toward the block. The ball will create a disturbance in the stability of the block by knocking it over. Which of the following correctly predicts what will happen to the block? [image of ball rolling toward tall, skinny block] - Unstable ...
Monday, April 20, 2015 by XenaGonzalez

science 8th (::
1. According to Ohm’s law, what is the resistance of a lightbulb if the applied voltage is 21.0 V and the current is 3.0 amps? (1 point) 24 ohms 7.0 ohms 18 ohms*** 3.0 ohms am i right?
Monday, April 20, 2015 by XenaGonzalez

MATH
You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a late fee of $39.00 plus the interest accrued...
Monday, April 20, 2015 by Sandy

Science
How many number of gold atom are present in 0.6 gm of 18 carat gold.The 24 carat gold is taken as 100% pure gold.(atomic mass of gold=197a.m.u)
Monday, April 20, 2015 by Mole concept

Science
Which of the following statements is true? A. There is more water on Earth now than there was millions of years ago. B. There is less water on Earth now than there was millions of years ago. C. There is no way to tell how much water was on Earth millions of years ago. D. There...
Sunday, April 19, 2015 by Katy

Science
How does a hurricane form? A. It forms over warm ocean water as a low-pressure area. B. It forms over warm ocean water as a high-pressure area. C. It forms over cool ocean water as a low-pressure area. D. It forms over cool ocean water as a high-pressure area. Is the answer B...
Sunday, April 19, 2015 by smoochy

Math
You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a late fee of $39.00 plus the interest accrued...
Sunday, April 19, 2015 by Sandy

Science
An iodoalkane A, with a molecular mass of 198, contains 30.3% carbon and 5.6% hydrogen by mass. It reacts with aqueous sodium hydroxide solution to give an alcohol which can be oxidised and with ethanolic potassium hydroxide solution to give two alkenes, neither of which show ...
Sunday, April 19, 2015 by Fasi

computer science,python
Write a program called ‘vectormath.py’ to do basic vector calculations in 3 dimensions: addition, dot product and normalization.
Sunday, April 19, 2015 by Scar

Science
Estimate the pressure that is exerted on the ground by an average female. In runners? and then In "high heels"?
Sunday, April 19, 2015 by Joe

Science
Calculate the heat required, in joules, to raise the temperature of a 0.20 kg block of aluminium from 20°C to 60°C.
Sunday, April 19, 2015 by Rev

science
A car,mass of 1500kg,accelerates at 2m/s from rest. Find 0-60mph time, use 1 mile=1613m
Sunday, April 19, 2015 by lee

Physics for Physical science
A picture frame hung against a wall is suspended by two wires attached to its upper corners. If the two wires make the same angle with the vertical. (Draw a free body diagram)
Sunday, April 19, 2015 by tina

Science
53.9 mL of 0.991 M nitric acid is added to 45.3 mL of sodium hydroxide, and the resulting solution is found to be acidic. 20.5 mL of 1.51 M potassium hydroxide is required to reach neutrality. What is the molarity of the original sodium hydroxide solution?
Saturday, April 18, 2015 by Anonymous

science-chemistry
if 1g of carbon dioxide is bubbled into 100g of a calcium hydroxide solution in a flask. what is the total mass of substance in the flask after the reaction is complete?
Saturday, April 18, 2015 by jasmine

Science
Assuming all volume measurements are made at the same temperature and pressure, what volume of hydrogen gas is needed to react completely with 3.75 L of oxygen gas to produce water vapor?
Saturday, April 18, 2015 by James

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
Saturday, April 18, 2015 by Hailee

science
if 1g of carbon dioxide is bubbled into 100g of a calcium hydroxide solution in a flask. what is the total mass of substance in the flask after the reaction is complete?
Saturday, April 18, 2015 by jasmine

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
Saturday, April 18, 2015 by Hailee

science
A cart of weight 25 N is released at the top of an inclined plane of length 1m, which makes an angle of 30° with the ground. It rolls down the plane and hits another cart of weight 40 N at the bottom of the incline. Calculate the speed of the first cart at the bottom of ...
Saturday, April 18, 2015 by harini

error analyze
Can you check grammar error in this text? What can you do to reduce global warming in Thailand? Nowadays, The problem global warming is main problem for everybody in the world. It is effect on change of weather that the world have temperature highest. In Thailand, the problem ...
Saturday, April 18, 2015 by Sophia

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
Friday, April 17, 2015 by Hailee

troduction to computer
you call the help desk to report a problem you are having on your computer. The technician asks you what operating system you are running . you know it is windows 7 but you forget which version. how can you find out
Friday, April 17, 2015 by Anonymous

Science
"Earth's energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then describe the ideal source of energy for generating most of your home's electricity, and explain why you chose ...
Friday, April 17, 2015 by Priscilla

Science
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. PLEASE HELP!!!!!!
Friday, April 17, 2015 by Priscilla

Science
why is it important biodiversity? A. preservation of biodiversity prevents the extinction of species B. preservation of biodiversity increases the amount of fossil fuels formed in a shorter period of time. c. preservation of biodiversity disturbs the balance in ecosystems D. ...
Friday, April 17, 2015 by Priscilla

Science
1. How did planetesmals form planets? They broke apart into smaller chunks They collided and stuck together They cooled and pulled ice together****** They began to rotate 2. What distance was used to define the astronomical unit (AU)? The average distance across the sun, its ...
Friday, April 17, 2015 by Hailee

Science
Neglecting air resistance, what is the speed of the object when it hits the ground?
Friday, April 17, 2015 by Kenzie

Science
Multiple Choice 1. Which of the following is a chemical change? (1 point) boiling of water melting a cube of ice dissolving 10 grams of salt in water splitting water into hydrogen and oxygen * 2. What is the mass of water that results from combining 2.0 g of hydrogen with 16.0...
Friday, April 17, 2015 by Pauly

Science
1. How did planetesmals form planets? They broke apart into smaller chunks They collided and stuck together They cooled and pulled ice together They began to rotate 2. What distance was used to define the astronomical unit (AU)? The average distance across the sun, its ...
Friday, April 17, 2015 by Hailee

Science
which of the following would have the greatest force? •an object with low mass accelerating slowly •an object with low mass accelerating quickly •an object with high mass accelerating quickly •an object with high mass accelerating slowly (and yes i go to to...
Friday, April 17, 2015 by Anon

Science
Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an element and which is ...
Thursday, April 16, 2015 by Angelica

Science
Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an element and which is ...
Thursday, April 16, 2015 by Angelica

science
A rectangular barge floats in freshwater. When a 400 kg block is loaded on the 5 m long by 2 m wide barge, the barge sinks a few centimeters deeper. How much deeper does the barge lower?
Thursday, April 16, 2015 by Anonymous

Science
if a 1 kg mass is placed on top of the input piston what is the largest mass that the output piston
Thursday, April 16, 2015 by Derrick

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Homework Help: Computers

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