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October 23, 2014

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

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College Physics
What is the smallest capacitor needed in a computer power supply in order to supply at least 0.2 A of current for 0.35 s after the power goes off? (DATA: Assume that the resistance of all the components of the computer mother board is 5 Ω and it uses a 5 V supply.)
Tuesday, September 16, 2014 at 10:19pm

science
In general, what would a scientist do after forming a testable question? A. Design an experiment B. Develop a hypothesis C. Draw a conclusion D. Analyze data I think A because he has already done his hypothesis (my original answer. if not, B.
Tuesday, September 16, 2014 at 8:51pm

Science! Help!
A student hypothesizes that a goldfish will be more active in a bowl that has red gravel than in a bowl with grey gravel. To test this hypothesis, the student places on goldfish in a bowl with red gravel and another in a bowl with grey gravel. The color of the gravel is the ...
Tuesday, September 16, 2014 at 6:59pm

science
A drinking glass at a crime scene contains a clear colorless liquid that may be water or alcohol. As the investigator, you know that the densities of alcohol, water, and ice are 0.79g/mL, and 0.92/mL. Design a simple method to determine the identity of the mystery liquid. ...
Tuesday, September 16, 2014 at 6:52pm

Science
aluminum has a density of 2.7g/cm3 while copper has a density of 8.96g/cm3. Which metal would you choose to build a model airplane? why?
Tuesday, September 16, 2014 at 6:48pm

Science
the density of liquid mercury is 13.53 g/cm3.The density of a solid copper is 8.96 g cm3. would you expect a piece of copper to sink or float when placed in a container of liquid mercury?
Tuesday, September 16, 2014 at 6:45pm

Science
A student hypothesizes that a goldfish will be more active in a bowl that has red gravel than in a bowl with grey gravel. To test this hypothesis, the student places on goldfish in a bowl with red gravel and another in a bowl with grey gravel. The color of the gravel is the ...
Tuesday, September 16, 2014 at 6:30pm

Science!
If a bowling ball were moved from Earth to the moon, how would it's weight and mass change? A. The bowling ball would weigh the same, but it's mass would increase. B. The bowling ball would weigh the same, but it's mass would decrease. C. The bowling ball would ...
Tuesday, September 16, 2014 at 5:37pm

math
The markdown price of a computer game was $45.00, which represented 75% of the original selling price. What was the original selling price?
Tuesday, September 16, 2014 at 5:36pm

Science
Which component of the technological system is achieved when an automobile airbag inflates? A. Input B. Feedback C. Process D. Output Is the answer B?
Tuesday, September 16, 2014 at 5:31pm

science
dentify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. Consider how did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic levels? ...
Tuesday, September 16, 2014 at 3:05pm

science
Suppose you place a 30kg weight 50cm from the pivot where should the following forces be applied to lift the load a)a 100N force b)a 150N force 2)how far will the load in question 1 be lifted if: a)the 100N force moves downwards b)the 150N force moveddownwards 1m
Tuesday, September 16, 2014 at 1:27pm

science
suppose you place a 30kg weight 50cm from the pivot, where should the following forces be applied to lift the load (a)a 100N force (b)a 150N force
Tuesday, September 16, 2014 at 1:17pm

Science
What are two examples of Mutualism, Commensalism and Parasitism?
Monday, September 15, 2014 at 10:13pm

Physical Science
Why does a glass filled with a cold beverage seem to sweat? a. saturation always results in sweat on wet object. b. the cold glass adjacent air to saturation, which is followed by condensation of water vapor. c. when cold, water molecules can move through tiny pores in the ...
Monday, September 15, 2014 at 9:32pm

Physical Science
A heat engine exhauts 122.0 kal after taking 499.0 how much mechanical work was done by the engine?
Monday, September 15, 2014 at 8:50pm

Science(Stuff to do like with magnets!)
1. A positively charged test object is moving toward the positive source charge in an electric field. What happens next??? A. its potential energy decreases. B. Its potential energy increases. C. Its potential energy stays the same. D. Its potential energy become the negative...
Monday, September 15, 2014 at 8:39pm

Social Studies
which of these actions would most help a worker improve her productivity? A. finding a new job in a different field. B. taking a training course related to her job. C. buying a laptop computer for home use D. asking her employer to give her a raise i think D
Monday, September 15, 2014 at 4:35pm

Science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Monday, September 15, 2014 at 3:04pm

Sience Plase help check my answers
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Monday, September 15, 2014 at 2:19pm

science
2.750 g of copper(II) oxide, CuO2, was reduced by heating at high pressure with excess hydrogen to yield 2.196 g of copper Cu.
Monday, September 15, 2014 at 1:48pm

Social Studies
I am doing the 5th grade final lesson for Unit 1 on Social Studies, and i would like to know if there are any main points i should focus on in the printing press,Internet, or computer.
Monday, September 15, 2014 at 1:39pm

Earth Science
7. The original location of an earthquake is also known as the A. hotspot. B. magnitude. C. horizon. D. epicenter.
Monday, September 15, 2014 at 1:18pm

Science
Which of the following is the longest divison of the geologic time? a) Period b) Epoch c) Era d) Year I have already looked in my book, I cant figure it out. Can somebody help me?
Monday, September 15, 2014 at 9:29am

Science
Where did scientist get information to develop the geologic time scale? a) They collected and studied rock samples in Africa. b) They studied rock layers and index fossils around the world. c) They conducted research at libaries. d) They didn't have any information; they ...
Monday, September 15, 2014 at 9:21am

Science
The geologic time scale originally ordered earth's rocks by? a) Absolute age. b) Relative age. c) Composition. d) Decades and centuries.
Monday, September 15, 2014 at 9:15am

Science
How should the solution of the (Fe(H2O)5(SCN)2+ complex be disposed of?
Monday, September 15, 2014 at 7:06am

Science
Propose a series of concentration to be used for calibration curve. If an unknown solution produced a result outside the range of the calibration curve, how could this be solved?
Monday, September 15, 2014 at 7:05am

Science
To determine Kf you will need to know the total concentration of Fe3+ and SCN- present in the solution. calculate these concentration and record them in the result.(show your working for one of the example.
Monday, September 15, 2014 at 7:02am

science
calculate the mass in mg of solid chromium nitrate needed to make 250 ml of an aqueous solution with a pH OF 4.00. The Ka of [cr(H2O)6]+3 IS 1.0*10-4.
Monday, September 15, 2014 at 1:57am

computer science
Which of the following is a type of software program used to write code and develop other programs. A: a command line interpreter B: the turtle graphics window C: an operating system D: an integrated development environment Please help asap!
Monday, September 15, 2014 at 1:21am

COMPUTER SCIENCE
Which of the following is a type of software program used to write code and develop other programs. A: a command line interpreter B: the turtle graphics window C: an operating system D: an integrated development environment Please help asap!
Sunday, September 14, 2014 at 10:37pm

Grade 9 Science
In each situation s below , it seems that a new substance may have been produced. Explain why each situation represents a physical change. a) A tailor makes a new suit out of a piece of fabric. b) A chef makes a salad out of lettuce, tomatoes and cucumbers. I really need ...
Sunday, September 14, 2014 at 6:32pm

Science
Help me unscramble the words acnsrl spgei
Sunday, September 14, 2014 at 6:18pm

Science/physics
I done the problem and was wondering if my answer is right I got 1.87 and then 12.4 degrees above x axis please help At time t = 0 s, a puck is sliding on a horizontal table with a velocity 4.60 m/s, 32.0° above the +x axis. As the puck slides, a constant acceleration acts...
Sunday, September 14, 2014 at 3:27pm

Science
Suppose the atomic mass unit had been defined as 1/10 the average mass of an atom of phosphorus .what would the atomic mass of carbon be on this scale? What would Avogadro's number be ?
Sunday, September 14, 2014 at 9:29am

Science
An airplane lands with a velocity of 100m.s/1.The maximum rate at which it can slow down is 5,0m.s/2.What is the minimum time needed to come to rest, starting from when it first touches ground?
Sunday, September 14, 2014 at 7:21am

Science
What is the cell structure involved in photosynthesis and respiration? What is the starting materials and raw materials of photosynthesis and respiration? What is the end product of photosynthesis and respiration? What is the energy requirement of photosynthesis and respiration?
Sunday, September 14, 2014 at 1:58am

Physical science
A 3.0-kg cat runs to the left at 10m/s and a 12-kg dog runs to the right at 4.0m/s what is the total kinetic energy?
Saturday, September 13, 2014 at 10:12pm

Science
5. A team of scientists is testing a new drug on AIDS patients. They expect patients to develop fewer AIDS-related illnesses when given the drug, but they don't expect the drug to cure AIDS. Thought Process: a. What is the independent variable? New drug treatment b. What ...
Saturday, September 13, 2014 at 8:17pm

science
(1.b) Calculate your de Bröglie wavelength and momentum when you are driving a car at a speed of 104 km/hr (~65 mph), assuming your mass is 80 kg.
Saturday, September 13, 2014 at 6:19pm

Science
If you are riding your bike and hit a curb and stop suddenly at 25m/s when you hit the curb and it took you only .75 seconds to stop after hitting the curb. What was your acceleration?
Saturday, September 13, 2014 at 5:31pm

Physical Science
For questions #14 – 17, write an equation for the reaction of magnesium oxide with sodium chloride to produce magnesium chloride and sodium oxide. 14. Show the formulas of the reactants. 15. Show the formulas of the products. 16. Write the balanced the equation for this ...
Saturday, September 13, 2014 at 3:33pm

Physical Science
Please Help me with this question and example in full details please. Scientists tested the effect of a fertilizer on the growth of plants. They had 2 sets of plants, Group A which gets fertilizer, water and sun and Group B which gets only water and sun (but in equal amounts ...
Saturday, September 13, 2014 at 3:08pm

Science
what is spectral broadening
Saturday, September 13, 2014 at 12:46pm

engineering science
An object is kept in equilibrium on an incline by means of supporting force, which is at an angle of 30 degrees o the inclined. The weight of the obbject is 500N. The incline forms an angle of 45 degrees with the horizontal. The coefficent of the friction between the surfaces ...
Saturday, September 13, 2014 at 11:52am

science
Is it possible that free Internet content might one day replace textbooks?
Saturday, September 13, 2014 at 3:23am

CIS111(Computer)
How many folder menu options are available in Windows 7?
Friday, September 12, 2014 at 10:16pm

The Curriculum
What is the best strategy to use when a teacher is providing for learning of physical knowledge as a part of science? A. Give detailed information by telling children about physical knowledge. B. Have someone demonstrate an experiment and debrief. C. Set up the materials and ...
Friday, September 12, 2014 at 9:57pm

Science
a body rolled on a surface with speed of 10m/s comes to rest after covering distance of 50 m find cofficient of friction
Friday, September 12, 2014 at 8:50pm

science
Turning on the switch in a flash light starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this an example of a process?
Friday, September 12, 2014 at 8:39pm

Veterinarian assisted
1. In the __________, an animal patient's hair is clipped and its skin is scrubbed to prepare for surgery.  A. hospital ward  B. surgical suite  C. treatment area  D. grooming area  2. Supervision of the treatment area is usually the responsibility...
Friday, September 12, 2014 at 6:17pm

science
what the heck ms.sue you literally skipped over my question. i've been next to my computer screen waiting for you to answer my question.
Friday, September 12, 2014 at 6:01pm

science
if the paramecium overheats, what could happen to the metabolism
Friday, September 12, 2014 at 5:37pm

computer science
Using visual logic build a program that asks the user for a whole number, N<100, determine how many quarters, dimes, nickels, and pennies make up N cents with the least amount of coins
Friday, September 12, 2014 at 5:33pm

Physical Science
Modern oil tankers weigh over a half-million tons and have lengths of up to one-fourth mile. Such massive ships require a distance of 4.8 km (about 3.0 mi) and a time of 22 min to come to a stop from a top speed of 26 km/h. (a) What is the magnitude of such a ship's ...
Friday, September 12, 2014 at 3:37pm

Language Arts - Please Check My Answer For This
Please help me with the following: Read the sentence. Juanita used her affinity for numbers to help her design a computer program that relied on college-level math formulas, even though she was only in middle school. Based on the context clues in the sentence, what is the best...
Friday, September 12, 2014 at 2:29pm

computer science
The problem is to calculate the usable area in square feet of a house. Assume that the house has a maximum of four rooms, and that each room is rectangular. I need help writing a program description,analysis,test,and with pseuocode with it.
Friday, September 12, 2014 at 1:21pm

computer science
In the Meteorological institute at Ruritania, one can find the following at Shiaho Railway Station in 2013 • In May 22 days with rainfall totaled 89 mm in that month • In June 1822 days with rainfall totaled 127 mm in that month • In Jule 8 days with rainfall ...
Friday, September 12, 2014 at 5:15am

computer science
Under the Von Neumann architecture, a program and its data are both stored in memory. It is therefore possible for a program, thinking a me mory location holds a piece of data when it actually holds a program instruction, to accidentally (or on purpose) modify itself. What ...
Friday, September 12, 2014 at 5:11am

computer science
CSI 16 1 Group Assignment 1 201 3 P age 2 of 6 1. 1. How many milliseconds (ms) are in 1 second? 2. How many microseconds are in 1 second? 3. How many nanoseconds (ns) are in 1 millisecond? 4. How many microseconds are in 1 millisecond? 5. How many nanoseconds are in 1 ...
Friday, September 12, 2014 at 5:10am

Science (college level)
1. What solar temp is needed for the peak intensity of radiation to occue at .2 micrometers? Remembering that humans can see light only between .4 and .7 microns, would the sun look brighter or dimmer at this new temp? 2. How much variation in earth orbital distance from the ...
Friday, September 12, 2014 at 5:07am

Science
Identify the dependent and independent variables in the following experiments. 1. Height of bean plants is recorded daily for 2 weeks. 2. Percent absorption by a pigment is measured for red, blue, green, and yellow wavelengths of light. My thought process: 1. a. Dependent: ...
Thursday, September 11, 2014 at 11:32pm

physical science
what causes friction?
Thursday, September 11, 2014 at 10:30pm

physical science
a bowling ball loses .5kg x m/s momentum as it hits bowling pins. how much momentum do the pins gain? please help
Thursday, September 11, 2014 at 10:27pm

Atmospheric Science
1. What solar temp is needed for the peak intensity of radiation to occue at .2 micrometers? Remembering that humans can see light only between .4 and .7 microns, would the sun look brighter or dimmer at this new temp? 2. How much variation in earth orbital distance from the ...
Thursday, September 11, 2014 at 9:27pm

Science
What is spectral broadening, Quasars, and the Expansion theory
Thursday, September 11, 2014 at 9:19pm

science
Suppose that a biologist states that the average height of undergraduate students at your university is 205 cm plus or minus a standard deviation of 17 cm. What does this mean? Does it mean that the height of undergraduates at the university ranges from 17 cm less that the ...
Thursday, September 11, 2014 at 8:13pm

Science
So what would you find something in the house? Product Symbols Precaution One example would be appreciated
Thursday, September 11, 2014 at 8:01pm

science
If you had an object that measured 4.0 cm for width,and 4.5 cm for height.how would you calculate the volume for this object?
Thursday, September 11, 2014 at 7:38pm

Science
What is red shifting and blue shifting
Thursday, September 11, 2014 at 6:17pm

Science
What is a protostar
Thursday, September 11, 2014 at 6:00pm

Science
What is apparent brightness and absolute brightness in Science
Thursday, September 11, 2014 at 5:50pm

Science - Please Check My Four Answers
Please help me with the following questions: 1. Which is usually the best way to present or communicate inferred data? A. in a bar graph B. in a data table C. in a simple diagram D. in a written paragraph I know the answer isn't C or D(I got C wrong), but now I think the ...
Thursday, September 11, 2014 at 5:43pm

science
Which of the following is a good study habbit.
Thursday, September 11, 2014 at 4:55pm

Science
What is the first step in the scientific method? (I WAS ABSENT DURING LESSON) A- Observation B- Hypothesis C- Conclusion D- Test
Thursday, September 11, 2014 at 4:52pm

Science - Please Check My Answers
Please help me with the following: Which is usually the best way to present or communicate inferred data? A. in a bar graph B. in a data table C. in a simple diagram D. in a written paragraph I know the answer isn't C or D(I got C wrong), but now I think the answer is B. ...
Thursday, September 11, 2014 at 3:52pm

science
Which of the following is an example of a physical system? hurricanes Volcanoes Glaciers Plant & Animal Communities ***All of the Above*** is it all of the above? Pls help asap!
Thursday, September 11, 2014 at 3:40pm

Science!
Which of the following is a valid reason why a scientist might reject a scientific theory? A. Some people disagree with it. B. It covers too broad a topic. C. New evidence contradicts it. D. It is too old. Is the answer C?
Thursday, September 11, 2014 at 3:17pm

Physical science
1. Nicotine,a poisonous compound found in tobacco leaves,is 74% carbon,8,65% hydrogen and 17,35% nitrogen (a)calculate the empirical formula of nicotine (b)what is the molecular formula of nicotine if it has a molar mass of 165 g.mol^-1
Thursday, September 11, 2014 at 1:00am

Science
how can you determine that a coin is not pure silver if you know the mass and volume of the coin?
Wednesday, September 10, 2014 at 10:17pm

Science
If the temperature rose from 25C to 45C how many degree Fahrenheit would that be
Wednesday, September 10, 2014 at 9:42pm

Science
Why sunlight produces more spectral lines than other light sources
Wednesday, September 10, 2014 at 9:15pm

Science
What information can astronmores gain from spectral lines of light
Wednesday, September 10, 2014 at 9:08pm

Science
Fluorescent lights must not end up in a landfill. Why must these lights be properly disposed of
Wednesday, September 10, 2014 at 9:00pm

math
The price of a computer fell 20% this year. If the computer now costs $550, how much did it cost last year
Wednesday, September 10, 2014 at 8:53pm

science
The ------are the things about an object that can be observed,such as it's size,color,shape,or sound.
Wednesday, September 10, 2014 at 8:45pm

science
The measure of how much material makes up an object is the?
Wednesday, September 10, 2014 at 8:41pm

Science
Which of the following describes a relationship between science and society? (1 point) Scientific discoveries can impact human life; therefore, society must remain scientifically literate. Scientific discoveries rarely impact human life; therefore, it is not necessary for ...
Wednesday, September 10, 2014 at 7:53pm

biology
jordan is doing a science fair project on the effect of music on the growth of tomatoes. he has two tomato plants, plant A and B, that he grows in a window and gives the same amount of water. plant A is exposed to classical music using headphones attached to the soil. ...
Wednesday, September 10, 2014 at 7:14pm

Physical Science
What is the kinetic energy of a 1850 kg car that is traveling at 58.0 km/h? B. How much work was done to give the car this kinetic energy assuming the car starts from rest? C. How much work must be done to stop the car?
Wednesday, September 10, 2014 at 4:45pm

Physical science
A silver nitrate solution is added to a solution of potassium chloride.the products formed are silver chloride and potassium nitrate 1.which product is a precipitate 2.write down the reaction in a molecular form.indicate states 3.write down the net ionic equation
Wednesday, September 10, 2014 at 4:17pm

Physical science
Give one word or term of the following descriptions 1. A reaction that results in the formation of an insoluble salt 2.the process in which ions whithin an ionic substance are separated 3.the positive ion 4.a proton acceptor
Wednesday, September 10, 2014 at 4:13pm

Computer
Each of the following is a typical feature of a fee-based internet back up service EXCEPT ______. backup to external hard drive universal access file feedback information delayed deletion
Wednesday, September 10, 2014 at 2:18pm

science
solved a ball is dropped from the top of a tower 100 meter high. simultaneously another ball is thrown upwards from ground with a speed of 50 m/s . after what time do they cross each other.
Wednesday, September 10, 2014 at 1:47pm

Physical science
Choose the correct answer to the following question 1.The following pairs of ions results in a precipitate being formed... (a)calcium and carbonate (b)sodium and sulphate (c)potassium and iodide (d)sodium and nitrate
Wednesday, September 10, 2014 at 12:44pm

Science
A hammer with a 500-g head exerts an average force of 810n on a nail speed as it drives the nail 4 mm into wall. What was the speed of the hammer head when it hit the nail?
Wednesday, September 10, 2014 at 10:44am

Critical thinking
Since Jessica’s participation in local politics increased significantly after she joined her school’s political science club, it is clear that her involvement in that club led her to take an interest in politics. The argument above is flawed because
Wednesday, September 10, 2014 at 9:33am

engineering science
An object weighing 60N rest on a slope forming an angle of 17.5 degrees with the horizontal. A force of 44N parallel to the sloping surface just moves the object upwards. Calculate the frictional force.
Wednesday, September 10, 2014 at 8:08am

science
the string of pendulum is 2.0 m long,the bosy is pulled sideway so that the string becomes horizontal and the bob is released what is the speed with which the bob is released ?what is the speed with which the bob arrives the lowest piont?
Wednesday, September 10, 2014 at 12:24am

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