Monday
May 25, 2015

Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

Science
I answered the questions, but I don't know if my choices are right. 1) Which of the following is an acidic pH? 6 7 8 800 None of the Above Answer: 6 ------------------------------------- 2) Which of the following is directly produced by photosynthesis? Glucose and oxygen ...
Saturday, March 21, 2015 at 2:10pm

science chemistry
Calculate the relative atomic mass of Limestone CaCo3 Methanol CH3oH Sulphric acid Ca(No3)2. (Ca=40.1,C=12,O=16,H=1,S=32).
Saturday, March 21, 2015 at 8:18am

Genetics (science)
Please answer my science question (in detail if possible) Q: in rats the gene for black hair colour is dominant over the gene for brown hair colour. Draw a plunnet square and use it to predict the fractions of both the genotypes and phenotypes produced when two heterozygous ...
Saturday, March 21, 2015 at 2:15am

Science
hi could you please help with the following question: In humans, free ear lobes is dominant to attached ear lobes. A male who is pure breeding for free ear lobes marries a woman who is pure breeding for attached ear lobes. What type of ear lobes will the children. (Including a...
Saturday, March 21, 2015 at 2:10am

science
Which statement is true regarding nuclear energy
Friday, March 20, 2015 at 9:24pm

Science
A switch is closed, a lamp turns on. The switch opened, and the lamp turns off. What does that suppose to mean..?
Friday, March 20, 2015 at 8:56pm

Science!
1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...
Friday, March 20, 2015 at 8:37pm

Science
A parallel connection of several lamps in a home allow you to control each lamp independently with switches. How is this possible?
Friday, March 20, 2015 at 7:46pm

science
I'm doing a lab for Le Chatelier's Principle. I'm concerned that all my answers sound very similar. Can someone help me and let me know if my answers are making sense? ~Thanks 1.) How is the reaction Zn(OH)2 <=> Zn^+2 + 2OH- affected by adding OH- I think ...
Friday, March 20, 2015 at 5:34pm

Science
A liquid solution of formaldehyde is 37% pure. This solution has a specific gravity of 1.037. The molecular weight of formaldehyde is 30.0. To 1.00 ml of this impure stock solution is added quantity sufficient total the total volume to 500 ml. If 1.00 ml of this solution is ...
Friday, March 20, 2015 at 12:56pm

Science, Physics
Concave mirrors can be used as for shaving or applying make up. The face must be inside the focus. You hold a concave mirror, with a focal length of 40 cm, about 30 cm from your face. Where is your image located? How much bigger than your face is the image?
Thursday, March 19, 2015 at 6:16pm

science
7th Grade Sarah heated two cubes of aluminum to 50oC. Cube A has a volume of four cubic centimeters. Cube B has a volume of two cubic centimeters. If the cubes do not touch each other, which of these statements is true?
Thursday, March 19, 2015 at 3:20pm

food science
A sample of grain in a bin is at 80.6 degrees F. The vapor pressure of water in the bin is 17.09 mm Hg. Assuming that the grain is well mixed, is the grain in danger of fungal growth and mycotoxin production?
Thursday, March 19, 2015 at 10:41am

Science
1. Which type of weather technology often carries cameras that can make images of Earth's surface, clouds, and snow cover? A. weather balloon B. weather satellite**** C. computer D. automated weather station 2. Why are weather forecasts more reliable now compared to ...
Thursday, March 19, 2015 at 10:33am

environmental science
what are the two main factors that determine where organisms live?
Thursday, March 19, 2015 at 10:24am

science
Are there any websites that explain Mendelian genetics and show how to solve such problems in an easy, concise manner at an AP Bio level? Thank you
Wednesday, March 18, 2015 at 11:27pm

Science
When is allergy season? Is it during the Spring?
Wednesday, March 18, 2015 at 9:21pm

Science
what is the distance above Earth's surface?
Wednesday, March 18, 2015 at 9:00pm

Science
the energy an object has due to it's motion is called a what?
Wednesday, March 18, 2015 at 8:07pm

science- punnet square
If both parents have freckles but one of their children do not have freckles (ff). What are the geno types of the parents? Use the punnet square to help you. so since the child doesn't have freckles the geno type of the parents must be mother Ff and father Ff F f F FF Ff f...
Wednesday, March 18, 2015 at 7:28pm

Science
Explain the process of filtering blood
Wednesday, March 18, 2015 at 6:36pm

science
Which of these compounds would you expect to have the highest melting point: C2H6,CL2,AsCL3, BaBr2? Explain your answer
Wednesday, March 18, 2015 at 4:21pm

science
Calculate the concentration of all species in a 0.145M solution of H2CO3
Wednesday, March 18, 2015 at 3:41pm

Science
What is a good experiment that shows light traveling in straight line until it hits a new medium?
Wednesday, March 18, 2015 at 1:02pm

Physical Science
3. What is the cracking and reforming? For what purposes are either or both used by the petroleum industry?
Tuesday, March 17, 2015 at 10:28pm

Acrostic Poem Science!!
Sodium!! S- O- D- I- U- M-
Tuesday, March 17, 2015 at 7:03pm

Science
A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is most likely A)from group 17 B)from group 1 C)from group 15 D)a noble gas Mrs. Sue Is it C?
Tuesday, March 17, 2015 at 6:50pm

Science
Which is most likely to be part of an ionic bond? A. An atom with no valence electrons B. An atom with one valence electron C. An atom with two valence electrons D. An atom with three valence electrons I think it is B.
Tuesday, March 17, 2015 at 6:31pm

Science
Which of the following is a pure substance? A. Chocolate milk B. Orange Juice C. Seawater D. hydrogen peroxide (h202) is the answer C.
Tuesday, March 17, 2015 at 5:59pm

Education
What is the most appropriate reason for having learning centers in the science classroom?
Tuesday, March 17, 2015 at 5:05pm

science
In which of the following statement the word light year is used correctly? (A) Ceres dwarf galaxy is 2.46 million lightyear away from us.(B) light travels with the speed of 1 lightyear in the universe (c) the next complete solar eclipse will be seen after 32 light year. (D) ...
Monday, March 16, 2015 at 11:01pm

Math 7th grade
Geraldo bought some computer software on layaway. He paid $12 down and must make a payment of $5 each week for 4 weeks. How much will Geraldo pay in all?
Monday, March 16, 2015 at 7:54pm

computer applications
John wants to see the formulas he has used in his spreadsheet but he does not want to see the results of the formulas. How does he display his formulas? A. Click on Trace Precedents. B. Click Print Formulas. C. Click on Show Formulas. D. Click Evaluate Formulas from reading my...
Monday, March 16, 2015 at 7:29pm

Science
What kind of substance has properties that reflects light very well, warms up in my hand, flattens out when it hits with a hammer and conducts electricity?
Monday, March 16, 2015 at 6:40pm

science
you are given a 1kg trolley and a trolley of unknown mass.explain how the mass of unknown . Explain how the mass of the known trolley can be determined if a mass-meter scale is not available
Monday, March 16, 2015 at 5:21pm

Science
A horizontal force of 24 N is being applied to a box on a level surface. The box is accelerating at the rate of2280889against a frictional force of 14 N. What is the mass of the box?
Monday, March 16, 2015 at 4:11pm

Science
What is a four-cell battery with the cells connected in series with each other? How would it look like?
Monday, March 16, 2015 at 1:47pm

science help
a 2500kg car moves at 15m/s 2; 15m/s2 is the __________ of the car
Monday, March 16, 2015 at 12:32pm

Science
When a football is kicked into the air, it has a velocity of 32m/s at an angle of 25º. At the very top of the ball’s path, what is it's vertical velocity?
Monday, March 16, 2015 at 9:53am

Statistics
The time it takes a technician to fix a computer problem is exponentially distributed with a mean of 15 minutes. what is the probability that a). it will take a technician less than 10 minutes to fix a computer problem? b) it will take a technician between 10 to 15 minutes to ...
Sunday, March 15, 2015 at 11:42pm

science
air masses that form over land are moist true or false
Sunday, March 15, 2015 at 4:47pm

Science Help
A projectile is launched at 15 degrees and it's landing height is the same as the launch position. If this is true, then at what other angle can the projectile be launch to achieve the same horizontal displacement?
Sunday, March 15, 2015 at 1:35pm

science
Describe what happens to the electricity produced at 25kV by a power station when its transmitted to a house at 230 V many miles away.
Sunday, March 15, 2015 at 12:23pm

Science
A dicot seed is preferred over a monocot seed to observe seed structure because? a.Distinct embryonic axis or b.Proper sepration of cotyldeons
Sunday, March 15, 2015 at 9:17am

science
What is the mass of air in a room meauring 30 cubic meters if the density of air is 1.3kg per cubic meter?
Sunday, March 15, 2015 at 2:19am

computer studies
Explain modelling molecules..please?
Sunday, March 15, 2015 at 2:15am

English Grammer
Please Help Check My Answers. 1. *****A. "The leaves," she explained, "can be anywhere from two to eight inches long." B. Nan said, "It can also have dark or light green leaves". C. "Also," she added. "the leaves' edges can be ...
Saturday, March 14, 2015 at 10:16pm

Science
fus = 12.5 and vap = 93.2 both j/k x mol Determine the entropy change when 7.30 mol of HCL(g) condenses at atmospheric pressure. my first answer was -91.3 but it keeps telling me that is incorrect and that delta Svap if scaled at 1.00 mol but needs to be scaled to 7.30 mol ...
Saturday, March 14, 2015 at 5:10pm

science
3.A weather station is located 300 miles directly east of a second station. Winds at the eastern station are blowing from the south. Winds at the western station are blowing from the north. What is true about the weather system near these two locations? A. A high-pressure ...
Saturday, March 14, 2015 at 3:44pm

science
The passageway that takes air from your throat to your lungs is called the pharynx*** larynx alveoli trachea
Saturday, March 14, 2015 at 1:20pm

SCIENCE(CHEMISTRY)
calculate the mass of silver deposited when a current of 2.6a is passed through a solution of a silver salt for 70mins ag=108,1 faraday 96500
Saturday, March 14, 2015 at 9:22am

Science
Which of the following may have happened if the inner planets had greater masses during the formation of the solar system? A. The inner planets may have been even smaller and rockier. B. The inner planets may have been larger and more gaseous. C. The inner planets may each ...
Friday, March 13, 2015 at 11:26pm

science
Calculate the average speed of a water molecule (with a mass of 3.0e-26 kg) on the surface of Venus (730 Kelvin).
Friday, March 13, 2015 at 8:50pm

Science
Which of the following planets is considered a rocky, or terristrial, planet? A. Venus B. Neptune C. Saturn D. Uranus Is the answer A? Thank you
Friday, March 13, 2015 at 7:02pm

Science
Why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?
Friday, March 13, 2015 at 4:58pm

science
How many sex chromosomes are found in the reproductive cells of human being?
Friday, March 13, 2015 at 1:23pm

science
A charge of +9.0 nC and a charge of +4.0 nC are separated by 50.0 cm. Find the equilibrium position for a −1.0 nC charge as a distance from the first charge. The Coulomb charge is 8.98755 × 109 N · m2 /C 2 . Answer in units of cm.
Friday, March 13, 2015 at 1:11pm

science
14. the sun's layer is called the photosphere . ( 1point) A. true b. false 15. meteoroids can form when comets break apart , creating dust clouds . ( 1point ) A. true b. false 16. a star is born whenever a nebula expands . ( 1point ) A. true b. false 17. a star system has ...
Friday, March 13, 2015 at 12:43pm

Science Help Please
Marie and Pierre noticed burns on their fingers after handling test tubes containing radioactive substances. This observation led to A. the discovery of natural fluorescence. B. the discovery of X-rays. C. the discovery of radiation therapy. D. the discovery of uranium. Is the...
Friday, March 13, 2015 at 12:12pm

Science Help Please
Marie and Pierre noticed burns on their fingers after handling test tubes containing radioactive substances. This observation led to A. the discovery of natural fluorescence. B. the discovery of X-rays. C. the discovery of radiation therapy. D. the discovery of uranium. Is the...
Friday, March 13, 2015 at 11:50am

Science Help Please
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...
Friday, March 13, 2015 at 11:34am

science
calculate the net force on an object that has a mass of 12kg and acceleration of 4m/sec
Friday, March 13, 2015 at 10:10am

Science Help Please
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...
Friday, March 13, 2015 at 9:25am

Science Help Please
A weatherman reports, "The storm waves are about 2 meters high and about 25 meters apart." What properties of waves is the reporter describing? A. frequency and wavelength B. wavelength and wave speed C. amplitude and wavelength D. amplitude and frequency Is the ...
Friday, March 13, 2015 at 9:16am

Science Help
A projectile that is launched at 15 degrees and the landing height is the same as the launch position. If this is true, then at what other angle can the projectile be launch to achieve the same horizontal displacement?
Friday, March 13, 2015 at 8:15am

Science Help
Soundproof rooms take advantage of which property of waves? A. Absorption B. Regular reflection C. Refraction D. Diffuse reflection Is the answer C? Thank you for your help and time.
Friday, March 13, 2015 at 12:15am

Science - 7th grade (repost)
Can you check my homework? 38. How does natural selection lead to evolution? a. Organisms mutate to adapt to their environment. b. Helpful traits accumulate among surviving members of the species. c. Overproduction provides food for stronger members of the species. d. ...
Thursday, March 12, 2015 at 10:58pm

Art
What twenty-first century technology has allowed artists to reproduce a hard copy of two-dimensional work such as a painting cheaply and quickly? A. Printer B. Camera C. Computer D. Internet Is the answer A? Thank you for the help.
Thursday, March 12, 2015 at 10:22pm

Science Check
Hi! Can someone check my answers? Thanks!! :) Question 1: A skateboarder (coasting with a constant velocity) jumps straight up. What happens she she lands? Does she come down.... A.) behind the skateboard B.) ahead of the skateboard C.) on the skateboard My answer: B. Question...
Thursday, March 12, 2015 at 8:30pm

Science Please Help Me
5. Which one of the following is not a cause of anemia? a diet lacking in iron and certain vitamins germs from someone with anemia inherited problems relating to red blood cells. loss of a large amount of blood 6. Which of the following carries blood to every part of the body...
Thursday, March 12, 2015 at 7:16pm

English.
Please check my answers? Letter of Recommendation Mary O'Dell PLTW Program Willow High School 1400 Old Tamah Road Irmo, SC 29067 April 11, 2007 Subject: Letter of Recommendation for Mr. Chris Moses To Whom It May Concern: Chris studied under my supervision as a student ...
Thursday, March 12, 2015 at 7:01pm

Science - 7th grade
Can you check my homework? (don't think I'd posted before) 38. How does natural selection lead to evolution? a. Organisms mutate to adapt to their environment. b. Helpful traits accumulate among surviving members of the species. c. Overproduction provides food for ...
Thursday, March 12, 2015 at 5:41pm

science Please Help Me
5. Which one of the following is not a cause of anemia? a diet lacking in iron and certain vitamins germs from someone with anemia inherited problems relating to red blood cells. loss of a large amount of blood 6. Which of the following carries blood to every part of the body...
Thursday, March 12, 2015 at 5:40pm

Computer Science
You try to run the CHKDSK utility from a command prompt but you keep getting an error message that you need to run it in Elevated Mode. How do you correct this? Reboot the computer in SAFE Mode and then run CHKDSK from a command prompt. Open command prompt from the Windows ...
Thursday, March 12, 2015 at 4:35pm

Science
Can anyone help me find the half-life of strontium-90? I also need an explanation on how to do it. Thanks!! Radioactive Decay of Strontium-90: At 0 years: 100% remaining At 28 years: 50% remaining At 56 years: 25% remaining At 84 years: 10% remaining At 112 years: 5% remaining.
Thursday, March 12, 2015 at 1:58pm

Math
My 10th grade teacher gave us geometry homework and this problem has me stumped for sure. This rhombus has three interior angles: (5x-2)°, (8y+2)°, and (3x+22)° . We are supposed to find the value of x and y. I tried to use an equation by assigning the fourth angle...
Thursday, March 12, 2015 at 11:35am

science. mrs.sue please help
14. the sun's layer is called the photosphere . ( 1point) A. true b. false 15. meteoroids can form when comets break apart , creating dust clouds . ( 1point ) A. true b. false 16. a star is born whenever a nebula expands . ( 1point ) A. true b. false 17. a star system has ...
Thursday, March 12, 2015 at 11:03am

Physical Science (H)
A container of milk holds 3640 g of milk. The density of the milk is 1.02 g/mL. What is the volume of the milk in the container?
Thursday, March 12, 2015 at 8:15am

science
What is the difference between apparent and absolute magnitude
Wednesday, March 11, 2015 at 10:03pm

Science - 7th grade
Can you check the following? Experiment A: Four groups of rats are first massed and then fed identical diets except for the amount of vitamin A they receive. Each group gets a different amount. After three weeks on the diet, the rats’ masses are measured again to see if ...
Wednesday, March 11, 2015 at 9:10pm

science
describe 4 different types of satellites
Wednesday, March 11, 2015 at 8:55pm

science
what is a humble telescope
Wednesday, March 11, 2015 at 8:54pm

science
What advantages of space probes
Wednesday, March 11, 2015 at 8:54pm

physical science
most electricity generated in the united states comes from?
Wednesday, March 11, 2015 at 7:20pm

science
What is the difference between apparent and absolute magnitude
Wednesday, March 11, 2015 at 7:07pm

Science
What mass of water is needed to react completely with the Na2O2? Answer in units of g.
Wednesday, March 11, 2015 at 6:59pm

Science
Sodium peroxide reacts vigorously with water to produce sodium hydroxide and oxygen. The unbalanced equation is Na2O2(s) + H2O(ℓ)→ NaOH(aq) + O2(g). What mass of O2 is produced when 81 g of Na2O2 react? Answer in units of g
Wednesday, March 11, 2015 at 6:58pm

science
How long dose it take the moon to rotate once and how many days dose it take to orbit the earth
Wednesday, March 11, 2015 at 6:35pm

Science
Which of the following statements is true about a collison between two cars? The total momentum after the collision is the same as the total momentum befor the collision *** The total momentum after the collision is greater than the total momentum beforethe collision The ...
Wednesday, March 11, 2015 at 6:28pm

science
if you can only see one "north", and the tilt is tilting "south", then its obstructed right?
Wednesday, March 11, 2015 at 6:27pm

Science
After an avalanche, a huge block of a stone slid down a mountain and landed in the middle of a road. People in the nearby town had a very difficult time moving it out of the road, The block of stone is difficult to move because. it has a high amount of momentum has balanced ...
Wednesday, March 11, 2015 at 6:25pm

science
Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v0. Car 1 begins to move at t=0, speeding up with a constant acceleration ax. Car 2 continues to move with a ...
Wednesday, March 11, 2015 at 6:13pm

science
what is a vector?their structure?
Wednesday, March 11, 2015 at 4:50pm

English
Which statement most accurately contrasts the ideas of different literary periods? A. Anglo-Saxon literature focuses on free will, whereas Renaissance literature suggests that human beings are controlled by fate. B. Literature of the Middle Ages focuses on science, whereas ...
Wednesday, March 11, 2015 at 1:58pm

science
a solid weighs 100g in air 75 g in water and 70 g in oil.find relative density of oil
Wednesday, March 11, 2015 at 12:45pm

Art
Mass Art: Technology and the Industrial Revolution 1) What is one way that the industrial revolutions impact showed itself in the art of realist like Monet? :Realists documented their inner reactions to the revolution. :Realists documented the lives of rules and the wealthy. :...
Wednesday, March 11, 2015 at 12:45pm

language arts
WEDNESDAY March 11, 2015 SCHOOL SUBJECTS Art Business Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th ...
Wednesday, March 11, 2015 at 9:45am

SCIENCE
A SCIENTIST NOTED A POSSIBLE RELATIONSHIP BETWEEN A CERTAIN CHEMICAL SUBSTANCE FOUND IN FISH AND THE OCCURRENCE OF THE KIDNEY FAILURE IN HUMANS. WHICH STEPS SHOULD THE SCIENTIST BEFORE CONDUCTING EXPERIMENT.
Wednesday, March 11, 2015 at 9:25am

Religion
Many Christians seem to accept modern cosmology - Galileo's view that the earth is not the center of the Universe - while at the same time disagreeing with the theory of evolution. For this discussion, we will focus on the following questions (in 250 words total): 1. Why ...
Wednesday, March 11, 2015 at 9:02am

Art
The United States supreme Courts architectural design symbolizes what values that are also shared with Greek culture? A. resistance and persistence B. creativity and love C. tranquility and peace D. balance and justice I feel like it's D or B 2.Realists reached to the ...
Wednesday, March 11, 2015 at 12:31am

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Homework Help: Computers

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