Wednesday
January 28, 2015

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

Post a New Question | Current Questions

Science
9. FM signals travel as changes in (1 point) A.the speed of the wave. B.the amplitude of the wave. C.the frequency of the wave.*** D.the loudness of the wave.
Wednesday, January 21, 2015 at 4:03pm

Science
8. Which of the following is true about all electromagnetic waves in a vacuum? (1 point) A.They all carry the same energy. B.They all travel at the same speed. C.They all have the same frequency. D.The all have the same wavelength.***
Wednesday, January 21, 2015 at 4:02pm

Science
7. Which of the following correctly describes a gamma ray? (1 point) A.long wavelength and low frequency B.long wavelength and high frequency C.short wavelength and low frequency D.short wavelength and high frequency***
Wednesday, January 21, 2015 at 4:02pm

Science
6. Sonar is used to inspect pipelines and bridge foundations. In this scenario, sonar takes advantage of the fact that (1 point) A.sound waves can reflect.*** B.sound waves can diffract. C.sound waves can spread out. D.sound waves can refract.
Wednesday, January 21, 2015 at 4:01pm

Science
5. The pitch of the siren of a moving fire truck changes from high to low as the fire truck passes by. What property of a sound wave changes as the fire truck goes by? (1 point) A.amplitude B.density C.temperature D. frequency***
Wednesday, January 21, 2015 at 4:00pm

Science
3. When the energy of a sound wave is transferred to a particle of a medium and causes it to vibrate and generate heat, the sound wave is (1 point) A.reflected. B.refracted. C.absorbed.*** D. Transmitted.
Wednesday, January 21, 2015 at 4:00pm

Science
2. Soundproof rooms take advantage of which property of waves? (1 point) A.absorption*** B.regular reflection C.Refraction D.diffuse reflection
Wednesday, January 21, 2015 at 3:59pm

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? (1 point) A.frequency and wavelength B.wavelength and wave speed C.amplitude and wavelength*** D.amplitude and frequency
Wednesday, January 21, 2015 at 3:59pm

science
Pepsin,which speeds up the breakdown of protein,is classified as
Wednesday, January 21, 2015 at 3:49pm

Science- urgent-review
what type of galaxy do astronomers consider to be the oldest? It's urgent because I am studying for a grade 9 exam but I dont know what this is.. please help.
Tuesday, January 20, 2015 at 6:47pm

blood/science
how are blood types determined? A. marker mocules marked on red blood cells B. Marker mocules marked on white blood cells C. Plasma fibrin's precense D. Blood available for transfusion
Tuesday, January 20, 2015 at 5:07pm

science
What is the blood type of a person whose plasma contains only anti-B clumping proteins? Is it blood type A?
Tuesday, January 20, 2015 at 4:55pm

science
1. How does a mutation in the DNA affect the way proteins are made? A. A mutation in the DNA results in misshapen tRNA molecules that do not fit inside the ribosomes. B. A mutation in the DNA results in a change in the mRNA and, ultimately, to a different protein structure. C...
Tuesday, January 20, 2015 at 4:24pm

Science
A certain species of grasshopper can have red stripes, yellow stripes, or red and yellow stripes. An RR grasshopper has red stripes, an YY grasshopper has yellow stripes, and an RY grasshopper has red and yellow stripes. Which type of inheritance is this an example of? ...
Tuesday, January 20, 2015 at 4:20pm

maths lit,business studies,life science economics
what can i study for or what career field i should follow?
Tuesday, January 20, 2015 at 2:00pm

maths lit,business studies,life science economics
what i can study after matric?what career field i should follow?
Tuesday, January 20, 2015 at 1:52pm

Science
A motor car of mass 800kg traveling at 20m/s brought to rest by break over 100m calculate the average breaking force required
Tuesday, January 20, 2015 at 12:50pm

Science
A sample of steam with a mass of 0.530g and at a temperature of 100 ∘C condenses into an insulated container holding 4.40g of water at 5.0∘C.( ΔH∘vap=40.7 kJ/mol, Cwater=4.18 J/g⋅∘C). What is the final temperature of the mixture, assuming no ...
Tuesday, January 20, 2015 at 10:01am

SCIENCE
IF THERE WAS A ZERO CHANGE IN EARTHS ECCENTRICTY, HOW MIGHT THAT AFFECT THE POSSIBILTY OF AN ICE AGE/
Tuesday, January 20, 2015 at 9:08am

science
A soccer player applies an average force of 180 N during a kick. The kick accelerates a 0.45 kg soccer ball from rest to a speed of 18 m/s. What is the impulse imparted to the ball? What is the collision time?
Tuesday, January 20, 2015 at 5:58am

Science
3. Describe how the Triassic period was a transitional time period during the Mesozoic era. Explain why the boundary between the Triassic and Jurassic periods is similar to the boundary between the Permian and Triassic periods NEED ANSWER FOR PRINCESS ANNA!!! She posted this ...
Tuesday, January 20, 2015 at 2:01am

Ashford
A computer worm is MOST likely to attack your computer’s:
Monday, January 19, 2015 at 9:17pm

Earth Science
4.   Which statement best describes an igneous intrusion?       A. Magma is injected into surrounding rock forming an igneous intrusion.  B. Magma explodes to the surface and forms a smooth outer layer of rock.&...
Monday, January 19, 2015 at 8:51pm

Earth Science
1.   What measurement best describes the results of a scientific experiment regarding distance?  A. 57 miles B. 500 kilograms C. 523 inches D. 51 kilometers     ​ My answer is D. Am I correct?  &...
Monday, January 19, 2015 at 6:49pm

Science
In the experiment water clock : what changes (independent variable) , how does it responds to the changes made(dependent variable), and what is being controlled (controlled variable). Pleas I really need this by today. And also my question for science fair is what part does ...
Monday, January 19, 2015 at 6:35pm

Earth Science - Please Check My Answer
Please help me with the following question: Please select the word from the list that best fits the definition Creates clouds, snow, sleet, rain and hail A. Radiation B. Conduction C. Convection D. Water Cycle I think the answer is mostly B, but I think it could be D as well. ...
Monday, January 19, 2015 at 6:34pm

SCIENCE
1. An environmental engineer might (1 point) Create mathematical models of what may happen to global temperatures in the future. Build and maintain a marine exhibit for an aquarium. Help an oil finery reduce its toxic gas emissions.*** Stock a lake with algae-eating fish. 2. ...
Monday, January 19, 2015 at 5:02pm

physical science
a diagram to show the maximum and minimum resultants
Monday, January 19, 2015 at 4:30pm

Science
Is "how did our planet form" a scientific question?
Monday, January 19, 2015 at 3:54pm

Science
How does cell differentiation connect to other branches of science or STEAM (science, technology, engineering, art, mathematics)
Monday, January 19, 2015 at 3:17pm

SCIENCE
1. An environmental engineer might (1 point) Create mathematical models of what may happen to global temperatures in the future. Build and maintain a marine exhibit for an aquarium. Help an oil finery reduce its toxic gas emissions. Stock a lake with algae-eating fish. Is it A...
Monday, January 19, 2015 at 2:38pm

Gen Science 2
lightning is actually an enormous display of the concept of? A) chemical heating B) solar energy C) magnetism D) groundind
Monday, January 19, 2015 at 2:23pm

science
How many litres of oxygen are needed to react completely with 25.0L of H2S at STP according to the following reaction: 2H2S + 3o2 --> 2so2 + 2H2O At STP temperature is 273 K pressure is 101.3 Kpa R is 8.314 so PV=nRT 101.3×25= n× 8.314× 273 n= 1.11 so ...
Monday, January 19, 2015 at 1:36pm

Science
How could genetic engineering of plants be useful to people? Give examples
Monday, January 19, 2015 at 12:20pm

Science
DNA can perhaps best be compared to a(n) A. secret code or B. electrical circuit
Monday, January 19, 2015 at 11:59am

Science
What are the different evidences used to support the continental drift theory? Give at least four and provide examples for each.
Monday, January 19, 2015 at 6:24am

Science, Chemistry
2) Find the temperature at which air posses a density equal to that of hydrogen at 0°C. Density of air at STP is 14.4. Ans: 3658.2 °C.
Monday, January 19, 2015 at 5:17am

computer graphics
Write an OpenGL program that allows interactive creation of polygons via mouse input. That is, I click to create new vertices until I like the polygon, then make some indication (double click, right click, press a key, click a button; your choice) that I’m done, and the ...
Monday, January 19, 2015 at 2:36am

SCIENCE
An arrow is fired vertically up lands 8 seconds later.Find: [ A] Its maximum height. [B] Its initial speed.
Monday, January 19, 2015 at 1:35am

Science/engineering
What part does gravity play in the function of the water clock? Explain.
Sunday, January 18, 2015 at 8:15pm

Physical Science
how do i find the number of molecules in a packet of sweetners (splenda, equal, sweet & low).
Sunday, January 18, 2015 at 8:12pm

Physical science
Is a chemical reaction the same as a chemical change i need to know so that i can plug it in to answer a question
Sunday, January 18, 2015 at 4:22pm

science
explain an animal cell in your own words and two things each part does
Sunday, January 18, 2015 at 2:06pm

science
when will the resultant of the two vectors be at a maximum
Sunday, January 18, 2015 at 11:00am

Life science,history,geography,math literacy
Is it possible to become a law while you are doing those subject
Sunday, January 18, 2015 at 10:31am

Science
guys, please give me any ideas for a investigatory project in physics ???
Saturday, January 17, 2015 at 9:14pm

Science
Please help me to solve this equation. Than you for your time and efforts. Here is the question? Jupiter at its closest approach to earth is about 630,000,000 kilometers, the diameter of Jupiter is 140,000 km, calculate the angular diameter of Jupiter in arc seconds. 206,265 ...
Saturday, January 17, 2015 at 4:24pm

science
Which constellations are visible from Canada in all seasons?
Saturday, January 17, 2015 at 3:23pm

Computer Literary
Which of the following is Not an example of debugging A)Looking for errors in programming code B)Fixing misspelled commands in programming code C)Solving faulty logic in programming code D)Upgrading to improve the programming code
Saturday, January 17, 2015 at 2:55pm

science
please draw an atomic diagram showing electrons in different energy levels LI + N = MG + F = NA + F = AL + O = LI + O = K + S = MG + O =
Saturday, January 17, 2015 at 1:43pm

Physical science
Two forces of 5N and 7N respectively act on an object. When. will the resultant of the two vectors be at a maximum?
Saturday, January 17, 2015 at 11:43am

physical science
two force of 5n and 7n respectively act an object , when will the resultant of the two vectors be at a maximum
Saturday, January 17, 2015 at 10:03am

Math literacy,physical science,CAT,life science
Can I still be a doctor without pure Maths?
Saturday, January 17, 2015 at 4:34am

Psychology
If science depends on observation of empirical data, how can social scientists study nonobservable phenomena, such as thought patterns or imagery?
Friday, January 16, 2015 at 10:59pm

statistics
In a class of 100 students, 30 are computer science majors, 49 are mechaincal engineering majors, 13 are civil engineers and the rest are general engineering majors. Assume students only have one major. If a student is chosen at random what is the probability they are: a civil...
Friday, January 16, 2015 at 9:23pm

Science
The rock cycle suggests that A)rocks are always added to Earth's mass. B)rocks are continuously being recycled into different forms. C)rocks disappear from Earth as they go underground. D)rocks always stay in the same form. My answer is A... is that right??
Friday, January 16, 2015 at 3:20pm

Science
A ball slowing down as it rolls across a carpet is an example of A. Balances force. B. Friction C. Interia D. Zero net force Is the answer B? Thank you
Friday, January 16, 2015 at 1:53pm

Science
A basketball momentarily changes shape as it bounces off the floor. This is due to balanced forces acting on the ball. True False Is the answer False? Thank you
Friday, January 16, 2015 at 1:40pm

science
Which cells identify as the ones most likely to hold the key to increased human longevity and vitality and how might this work? Describe one alternative to cloning
Friday, January 16, 2015 at 9:59am

science
What are some arguments against extending human life? Please describe at least one objection and one objection from your research and experience.
Friday, January 16, 2015 at 9:42am

SCIENCE
From the following data ,calculate the percentage of KCl in sample of chloride weight of the sample 0.1865, volume of AgNOS required 26.50mL and Ag of AgNO3 =0.008700gram
Friday, January 16, 2015 at 2:50am

science
a box weighs 200 N. If you push on the box with a force of 15 N and the box does not move, how much work did you do? A) 0 J B) 15 J C) 15 N or D) 3000J
Friday, January 16, 2015 at 12:22am

Science (Chemistry)
Identify the manipulated and responding variables in this testable question: "Does orange juice transform from a solid to a gas at the same exact rate as water?" My question is, what will you be changing in this lab (MV) and what are you measuring (RV)?
Thursday, January 15, 2015 at 10:03pm

5th grade science
How might the history of the United states be different if the first European settlements had occurred on the west coast instead of the east coast
Thursday, January 15, 2015 at 9:19pm

science
sound travels in theses from its source
Thursday, January 15, 2015 at 7:05pm

science fifthgrade
FORCE AND MOTION. wHAT GOES INTO DESIGNING Vehicle? can u tell me any science sites
Thursday, January 15, 2015 at 6:24pm

math/science
the melting point of the element bromine is about 19 grades F this is about 57 grades F more than the melting point of mercury. What is the melting point of mercury?
Thursday, January 15, 2015 at 6:11pm

how concepts develop
Which of the following is the crux of the interrelationship between mathematics and science? A. About half of the basic math concepts are related to science concepts. B. The basic concepts of mathematics are the basic process skills of science. C. Basic mathematics process ...
Thursday, January 15, 2015 at 6:10pm

Science
What is the genetic code? A. The order of amino acids in proteins makes up the genetic code. B. The order of amino acids in mRNA makes up the genetic code. C. The order of nitrogen bases in tRNA makes up the genetic code. D. The order of nitrogen bases in DNA makes up the ...
Thursday, January 15, 2015 at 6:07pm

science
How might the history of the US be different if the first European settlements had occurred on the west coast instead of the east coast
Thursday, January 15, 2015 at 5:57pm

Science
How many atoms are in LiBr2 show in the reaction side? LiCl (22g) + Br2 (30g)
Thursday, January 15, 2015 at 5:41pm

Science HELP!!!
What happens after genes are injected into an organism?
Thursday, January 15, 2015 at 5:10pm

science
Fertilizers and pesticides applied to farm fields in Pennsylvania have made their way to Chesapeake Bay Maryland, this is an example of _____________ pollution.
Thursday, January 15, 2015 at 3:08pm

science 1 question
Explain how a scientist would use DNA or protein sequences taken from three different organisms to construct a cladogram. I know what a cladogram is but I have no clue about the DNA or protien thing. Anything would be helpful. Please help! Thanks.
Thursday, January 15, 2015 at 2:56pm

physical science
Determine the resultant of the forces using an accurate tail-to-head vcector diagram. Use a scale of 10mm:1N
Thursday, January 15, 2015 at 1:36pm

Science
Which of the following is not a characteristic of igneous rocks? Igneous rocks are formed when molten rock cools and hardens. Igneous rocks have crystal grains. Igneous rocks are larger in size because the rock cooled more slowly after the hot lava came out from the ground. ...
Thursday, January 15, 2015 at 1:20pm

physical science
Force1 of 3,5N acts on an object to the right and force2 of 4,5N acts on the object towards the left. Determine the resultant of the forces using an accurate tail-to-head vector diagram,use the scale 10mm:1N
Thursday, January 15, 2015 at 12:39pm

Science
When (blank) forces act on an object, they cause the object to move. A. Balanced B. Unbalanced C. Friction D. Net Is the answer B?
Thursday, January 15, 2015 at 12:34pm

5th science help
Convert 3.8 m/s to km/h I got 13.68 but I got it wrong, can someone help me know why?
Thursday, January 15, 2015 at 11:47am

mathematics,science,physics,agriculture and geograph.
which work i surpose to do?caus geograph confuse me!
Thursday, January 15, 2015 at 10:05am

Science HELP!!!
What happens after genes are injected into an organism?
Thursday, January 15, 2015 at 7:28am

Science Ms. Sue?
Why did the following change occur? The snow that covered the ground all winter began to melt, temperatures rose, and flowers started to bloom. A. days became shorter B. the Earth tilted away from the sun C. the sun's rays became more concentrated D. Earth completed one ...
Thursday, January 15, 2015 at 2:07am

SCIENCE
ALuminum can be determined gravimetricaly by the reaction with solution of 8-hydroxyquinoline (C9H7NO3).The net ionic equation . A mass of 0.1248g of Al(C9H6NO)3 WAS obtained by precipitating all of the the Al3+ from a solution prepared by dissolving 1.8571g of a mineral. what...
Thursday, January 15, 2015 at 1:50am

computers
You have purchased an Apple desktop computer and want to set it up so that you can access your computer desktop when you are on the road. How might you do this? A. Install Remote Desktop for Apple on your desktop. B. Install Apple+ VPN on your desktop. C. Configure your ...
Wednesday, January 14, 2015 at 10:37pm

science
How much latent heat is needed to completely melt 368 gram ice cube?
Wednesday, January 14, 2015 at 10:06pm

Science
What genetic changes would you make to your food
Wednesday, January 14, 2015 at 10:00pm

science
what is the concentration of a solution made by mixing 22.0 g of salt with 200 mL of water? assume that the volume of the water does not change when the salt is added
Wednesday, January 14, 2015 at 9:08pm

science
I grand daughter has this fill in the blank: Electically__________ objects push or _____________ on other electrically charged objects. This produces___________. Please fill in the blanks please. Because we don't know... Thanks!!!!
Wednesday, January 14, 2015 at 7:13pm

science Help
How did the discovery of the electron change the atomic model? A.it disaproved the earlier idea of an indivisible atom. B.it confirm that atom are very tiny. C. It exposed fraudulent experiments conducted by unqualified scientists. D. It proved that atom are easier to see than...
Wednesday, January 14, 2015 at 5:53pm

Science
I need to know how much of a 2g sample of Technetium-99 would be left after 12 hours. The half life of Technetium-99 is 6 hours
Wednesday, January 14, 2015 at 4:24pm

Science
According to the fossil record shown, how did the Bighorn Basin environment change from 55.85 to 55.75 million years ago? Highlight the correct answer choice. (1 point) A. Over time, less plant life covered the basin. B. Over time, more plant life covered the basin. C. Over ...
Wednesday, January 14, 2015 at 3:43pm

Science
Hey I need help with my science paper I have to write a page or two on birth defects but I don't know any birth defects.
Wednesday, January 14, 2015 at 3:35pm

Science
A cat is walking down a sidewalk and spots a dog in a nearby yard. The cat starts to run in the opposit direction and then quickly climbs a tree. Which of the following changes most accurately describes the movement of the cat? A. Change in speed B. Cange in distance C. Change...
Wednesday, January 14, 2015 at 3:07pm

Science
1.A model train traveling at a constant speed around a circular trak has a constant velocity. True False**** 2.Which of the following would be affected if a soaring eagle changes direction but remained at a constant speed? A. Acceleration only B. Velocity only**** C. ...
Wednesday, January 14, 2015 at 2:49pm

science
One way the modern atomic model differs from Thomson’s atomic model is that electrons are no longer scattered throughout an atom’s positive matter like chocolate chips in cookie dough. Instead, each electron is outside of the nucleus occupying a specific... If new ...
Wednesday, January 14, 2015 at 2:47pm

Science
I am really having a hard time completing this question.. Punctuated equilibrium occurs over a relatively ______ period of time, usually as a result of a ________.
Wednesday, January 14, 2015 at 12:24pm

physica science
when will the resultant of the two vectors be at maximum when two forces of 5n and 7n act on an object?
Wednesday, January 14, 2015 at 10:02am

computer
Mention two instructional materials that can be prepared using a Microsoft word?
Wednesday, January 14, 2015 at 7:55am

computer
how can you use painting and drawing to make the leaners better understand mathematics?
Wednesday, January 14, 2015 at 7:53am

Science
Why are phosphates rocks useful?
Wednesday, January 14, 2015 at 7:44am

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Homework Help: Computers

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