Friday
May 29, 2015

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

Science
What are the four flight forces? Give a brief description of each.
Tuesday, April 21, 2015 at 8:20pm

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 at 5:59pm

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 at 5:57pm

science
Which of the following is called the "master gland"? A. Pancreas B. Adrenal C. Thyroid D. Pituitary
Tuesday, April 21, 2015 at 4:57pm

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 at 4:46pm

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 at 3:01pm

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 at 1:42pm

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 at 1:21pm

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 at 1:13pm

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 at 12:57pm

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 at 12:28pm

Science
In what ways are electric generators and motors similar? In what ways are they different?
Monday, April 20, 2015 at 10:05pm

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 at 9:23pm

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 at 8:42pm

Science (Chemistry)
Why do ionic materials dissolve so well in water, but not in Hexane?
Monday, April 20, 2015 at 8:22pm

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 at 8:09pm

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 at 7:27pm

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 at 7:04pm

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 at 6:38pm

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 at 4:47pm

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 at 1:18pm

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 at 1:14pm

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 at 12:04pm

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 at 8:05am

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 at 8:57pm

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 at 8:48pm

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 at 7:26pm

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 at 1:09pm

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 at 10:24am

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 at 8:17am

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 at 8:16am

science
A car,mass of 1500kg,accelerates at 2m/s from rest. Find 0-60mph time, use 1 mile=1613m
Sunday, April 19, 2015 at 7:08am

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 at 6:29am

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 at 4:19pm

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 at 3:02pm

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 at 2:05pm

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 at 1:59pm

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 at 1:30pm

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 at 11:30am

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 at 11:03am

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 at 2:19am

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 at 11:58pm

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 at 9:22pm

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 at 6:38pm

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 at 6:09pm

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 at 5:02pm

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 at 4:40pm

Science
Neglecting air resistance, what is the speed of the object when it hits the ground?
Friday, April 17, 2015 at 3:30pm

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 at 1:55pm

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 at 1:41pm

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 at 12:47pm

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 at 11:40pm

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 at 11:38pm

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 at 11:23pm

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 at 10:49pm

Science
Use the following equation: CO(g) + 2H2 (g)= CH3OH(g) delta H = -21.7 kcal Which direction will the reaction proceed after some of the methanol vapor is condensed and removed from the reaction vessel? please help im getting so confused on the directions of the reactions
Thursday, April 16, 2015 at 9:25pm

science
An increase in temperature will create what type of shift in the following equation: 2SO3 = 2SO2+ O2 delta H = +197 kJ/mol? Wouldn't it be a shift right because there is heat involved?
Thursday, April 16, 2015 at 9:22pm

science
A mixture of nitrogen gas, hydrogen gas and ammonia gas reacts by: N2(g) + 3H2(g) = 2NH3(g) If the total pressure in the reaction vessel is 50.0 atm ans the equilibrium mixture contains by volume: N2= 96.143% H2= 0.3506% NH3= 3.506% what is the equilibrium constant (Kp)?
Thursday, April 16, 2015 at 8:35pm

Science
1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed Amplitude and wavelength Amplitude and frequency 2. Sound proof rooms...
Thursday, April 16, 2015 at 6:32pm

science
calculate the minimum guage pressure required at the base of building of height 200m for water to reach a closed tank at the of the building at the gauge pressure of 500Kpa
Thursday, April 16, 2015 at 3:04pm

Physical science
A trolley of mass of 20kg rolls down an incline from rest. The top of the incline is 10m above the ground. The trolley experiences a constant frictional force of 25N while it rolls down the incline. The velocity attained by the trolley at the bottom of the incline is 12m/s. ...
Thursday, April 16, 2015 at 2:00pm

Science
I need help with these question please. 1. how can you renewable heating & cooling? 2. how can you renewable hot water? 3. how can you renewable electricity?
Thursday, April 16, 2015 at 2:00pm

Science
Problem How could renewable energy sources be used in a house? Devise a Plan 1. Consider what you learned about renewable energy sources. Use what you learned to design a house that operates entirely on renewable energy sources. Focus on three major needs: (1) heating and ...
Thursday, April 16, 2015 at 1:43pm

science
What do bone marrow (the soft connective tissue that fills the internal spaces in bone) and the dermis (layer of the skin under the epidermis and over the hypodermis) have in common? (1 point) • They are both sites of new cell formation. • They both contain or are ...
Thursday, April 16, 2015 at 1:18pm

Science
1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2. Sound proof ...
Thursday, April 16, 2015 at 1:10pm

Science
Which chemical equation shows that no atoms are lost during a chemical reaction? A. 8Fe+s8-->Fe5 B. 8Fe+8S8--> 8FeS C. Fe+8S8--->FeS D. 8Fe+S8--->8FeS Is the answer A?
Thursday, April 16, 2015 at 10:57am

Science
Johnny left a glass of milk on his bedside table for a week, and it spoiled. At the end of the week, the glass contained a yellow liquid with lumpy white chunks, and there was a terrible odor. What can be concluded? a) The milk has undergone a physical change. b) The mass of ...
Thursday, April 16, 2015 at 10:55am

Science
The current atomic model would be revised if a) better microscopes were being used to study its structure. b) better microscopes are invented in the future. c) new information about an atom's structure is discovered. d) a new element is discovered in the future.
Thursday, April 16, 2015 at 10:21am

science
How long does a car take to travel 30 m ,if it accelerates from the rest at a rate of 2.0 m/ s^2
Thursday, April 16, 2015 at 10:20am

Science
What volume of aluminium has the same number of atoms as 8.0cm^3 of mercury?
Thursday, April 16, 2015 at 10:17am

English
What can you do to save electricity? (2) 1. I can unplug the computer and the printer. 2. I can unplug appliances in my room. 3. I can unplug all electronic devices in my room. 4. I can unplug the TVs in the rooms. 5. I can unplug all the electronic devices including the fax ...
Thursday, April 16, 2015 at 8:53am

English
What can you do to save electricity? 1. I can turn off the lights when I leave my room. 2 I can turn off the lights when I don't use the room. 3.I can turn off the lights when I don't stay in the room. 4. I can turn off the lights of my classroom when we leave for the ...
Thursday, April 16, 2015 at 8:20am

Science last question
Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it is bigger*** D. box ...
Thursday, April 16, 2015 at 12:38am

science
4. When a fan is turned on, it changes electrical energy into ______ energy. A. motion B. magnetic C. gravitational D. electromagnet 5. An experiment discovered that a particular material was a poor conductor of electricity. This material would most likely be used as an A. ...
Thursday, April 16, 2015 at 12:28am

science- urgent
How do humans grow crops on land that would naturally be either too dry or too wet? Explain. ?
Wednesday, April 15, 2015 at 9:39pm

Science
You mix oil and vinegar for a salad dressing. After a few minutes, the oil has seperated and is floating. Infer which has the greater density - oil or vinegar. Explain. I put "Vinegar has more density since it's on the bottom, where the oil has less since it seperated...
Wednesday, April 15, 2015 at 8:51pm

cda
For school-age children, the environment must include a separate area where children have _______ to do their homework. A. a library and computer B. tables and chairs C. books and encyclopedias D. pens and pencils my answer is c
Wednesday, April 15, 2015 at 7:30pm

science
What can we learn from an experiment itself?
Wednesday, April 15, 2015 at 5:08pm

Science
A student is walking at 3.3 meters per second along a straight sidewalk. At a time of 6.8 seconds his position is at 19.7 meters right of the starting point. Later, the student is 52.5 meters to the right of the starting point. What was the time that the student walked to get ...
Wednesday, April 15, 2015 at 3:56pm

Science/Physics
My question is you walk 3.9 kilometers to school. In gym, you do the 12 minute run and actually make it 2.4 kilometers. After school you walk your friend home first and then go home it is 3.1 kilometers farther than your morning walk to school. What was your total distance ...
Wednesday, April 15, 2015 at 3:36pm

Science
You are trying to determine how far it is to your new friends house. You find out that you actually live on the same street. You also use the same bus stop. Google maps says that your house is 24 meters south of the shared bus stop. Your friend said that he measure his ...
Wednesday, April 15, 2015 at 3:30pm

writting skills
1. Which one of the following comes first in an online catalog entry? A. Title of the book B. Year of publication C. Call number of the book D. Author's last name Student Answer: B Answer: Incorrect Reference: 2. You've located three books on a topic you're ...
Wednesday, April 15, 2015 at 3:30pm

Science
1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2. Sound proof ...
Wednesday, April 15, 2015 at 11:14am

Science
Light waves strike a lamp shade. What property of light is demonstrated? A.diffuse reflection B.diffraction c.refraction D.regular reflection I think the answer is C but im not sure Please help
Wednesday, April 15, 2015 at 10:48am

Science
Which of the following illustrates mechanical weathering? 1.Carbonic acid weathers marble and limestone. 2.As plants grow, they produce weak acids that slowly dissolve rock. 3. Oxidation causes weathering in rock. 4. Repeated freezing and thawing in rocks causes weathering. ...
Wednesday, April 15, 2015 at 10:47am

science
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 ...
Wednesday, April 15, 2015 at 10:43am

6th Grade Science Experiment
Hi, forget my first post. Can someone please explain what a dependent and independent variable is? Thanks and I don't have too much time either.
Wednesday, April 15, 2015 at 10:03am

science please help and explain asap
A rock of mass 5kg is pushed over the edge of a cliff which is 200m high 1.ignore air resistance and calculate the speed of the rock at the bottom of the cliff. In reality air resistance cannot be ignored. The rock eventually reaches terminal velocity of 30m/s 2.calculate the ...
Wednesday, April 15, 2015 at 9:45am

6th Grade Science Help PLEASE!
Hi, so I did the coin drop experiment. I finished project, wrote my hypothesis, my data, my observations, and my conclusion. What I need help is that in this experiment I don't know which on is the independent and dependent variable. That's all I need. Can someone ...
Wednesday, April 15, 2015 at 9:09am

workplace set-up
setting up medical office with 3 physicians, 6 adm. personnel and 4 clinical assistants plus 1 office manager. How can I set up a complete computer equipments with all equipment needed to run the office
Tuesday, April 14, 2015 at 9:36pm

Science
What is the momentum of a 2 kg rock moving at 3m/s?
Tuesday, April 14, 2015 at 9:07pm

Science
Describe the difference between the momentum between a tennis ball and a wrecking ball that is thrown at the same speed.
Tuesday, April 14, 2015 at 8:19pm

Science
Consider the carbon atom whose nuclear mass is 11.996amu.calculat mass defect when proton=1.00728amu,neutron=1.00867amu
Tuesday, April 14, 2015 at 3:57pm

Science
In the uranium mass 235,the binding energy was estimated as 3.0×10^-11Joules.Determine the energy released by 1g of uranium.
Tuesday, April 14, 2015 at 3:48pm

Science
The electron in a helium ion moves from a Bohr's orbit whose principal quantum number is 4 to another whose quantum number is 6.calculate the energy of transition in this process.
Tuesday, April 14, 2015 at 3:39pm

Science
Evaluate the value of the Bohr orbit in a hydrogen atom whose principal quantum number is 1.
Tuesday, April 14, 2015 at 3:32pm

Science
The assertion that 1g of uranium can produce energy equivalent to 10kg of coal implies that
Tuesday, April 14, 2015 at 3:28pm

Science
Which of the following characteristics x-ray photon emission? (a)electron capture (b)beta-decay (c)positron emmision (d)gamma-decay
Tuesday, April 14, 2015 at 2:37pm

Science
Which of these is odd in the series? (a)sodium (b)sulphur (C)plutonium (d)francium
Tuesday, April 14, 2015 at 2:18pm

Science
The equation of the reaction between 2 moles of proton and 2 moles of neutron producing Helium particles is a practical suggestion of (a)existence of neutral particle. (b)alpha-particles has no relationship with nucleus (c)electron is not part of helium. (d)nucleus is neutralize
Tuesday, April 14, 2015 at 1:57pm

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Homework Help: Computers

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