Recent Homework Questions About Computer Science
A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.8 x10^10 m (inside the orbit of Mercury), at which point its speed is 9.1 x10^4 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto. What is its speed when...
Tuesday, July 8, 2014 at 5:37pm
Using two or three well-developed paragraphs, explain how temperature and precipitation determine which plants grow within an area and give an example.
Monday, July 7, 2014 at 9:55am
Using two or three well-developed paragraphs, describe how energy is transferred from the sun to producers and on to consumers. Provide at least one example.
Monday, July 7, 2014 at 9:53am
English Essay Part 2
Background Your favorite cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans to apply at similar stores in your town. But you also know she is a perfect match for...
Monday, July 7, 2014 at 9:28am
80ml of methyl alcohol water are mixed to give a solution that has a final volume of 154ml. What is the concentration of the solution expressed as percent by volume methyl alcohol?
Monday, July 7, 2014 at 9:03am
In the construction of bridges and skyscrapers, gaps must be left between adjoining steel beams to allow for the expansion and contraction of the metal due to heating and cooling. The temperature of a sample of iron with a mass of 10.0g changed from 50.4oC to 25.0oC with the ...
Sunday, July 6, 2014 at 10:25pm
An object with mass 110 kg moved in outer space. When it was at location < 11, -35, -7 > its speed was 17.5 m/s. A single constant force < 230, 420, -230 > N acted on the object while the object moved to location < 16, -41, -13 > m. What is the speed of the ...
Sunday, July 6, 2014 at 2:31pm
Do houseplants affect the quality of air in a house? Describe an experiment that would answer this question. What gases do you want to measure? I answered yes since plants give off oxygen which animals need to survive. I need a little help with the experiment.
Friday, July 4, 2014 at 5:21pm
What happens when mineral deposits are found? A. Miners lose their jobs. B. Mining towns are started. C. Nearby water supplies dry up. D. People move away from the deposits. My answer- C
Thursday, July 3, 2014 at 2:34pm
A man moves on his bike with 54km/h and takes u- tune (180 degree)and continues it speed to move with same speed .the time of u-tune is 10sec.find its average accleration
Wednesday, July 2, 2014 at 2:20pm
Abox of mass 60kg starts from the rest at height h and slides down a rough slope of length 10m, which makes an angle of 25 degree with the horizontal. It undergoes a constant acceleqation of magnitude 2m/ while sliding down the slope. Calculate the work done on the box by the ...
Wednesday, July 2, 2014 at 12:06pm
Which way is the momentum occuring if a child is riding a merry go round at a constant speed. So for example at each 4 "sides" of the merry go round which direction is momentum . I know the velocity is always tangent to the circle at a specific point. does the ...
Wednesday, July 2, 2014 at 9:37am
Air pressure at the surface of a fresh water lake near sea level is about 10^5 N/m2. At approximately what depth below the surface does a diver experience a pressure of 3.0 e5 N/m2?
Tuesday, July 1, 2014 at 5:57pm
computer system organization
2. You're an IT professional, and your boss has asked you to prepare a briefing for senior staff on the comparative advantages and disadvantages of three competing tape drive technologies: Digital Linear Tape (DTL), Advanced Intelligent Tape (AIT), and Linear Tape Open (...
Tuesday, July 1, 2014 at 12:51am
A 25 kg box is being pushed across the floor by a constant force 100, 0, 0 N. The coefficient of kinetic friction for the table and box is 0.15. At t = 6.0 s the box is at location 14, 3, −4 m, traveling with velocity 6, 0, 0 m/s...
Monday, June 30, 2014 at 9:27am
What effect does friction have upon a) ball bounce angle, and b) speed of the court? Refer to clay and grass courts to help illustrate your answer. (4 marks) please help!
Monday, June 30, 2014 at 6:52am
Equation for the reaction which took place: Hydrochloric acid + calcium carbonate -> calcium chloride + carbon dioxide + water When the reaction stopped the total mass had decreased from 102.5g to 101.4g. some water had evaporated from the beaker what else caused the drop ...
Sunday, June 29, 2014 at 10:26am
Question 1 : ASSIGNMENT LP A transportation company in Mandeville has five delivery vehicles to deliver products along five delivery routes which have different costs according to the truck used. The estimated costs in United States Dollars for each truck along each route are ...
Sunday, June 29, 2014 at 8:40am
To have a high work effiency of concrete batching plant,we need to know the maintance of it to extend its useful life.We have study this for a long time and it includes two aspects. One is lubricating the shaft of concrete batching plant when it works every single time to ...
Thursday, June 26, 2014 at 11:11pm
Statistics (Check Work)
Can Someone help me with these 2 problems? I am certain I am solving them correctly, but for some reason the computer keeps marking my answers as incorrect. Question 1: Minnesota had the highest turnout rate of any state for the 2012 Presidential election. Political analysts ...
Thursday, June 26, 2014 at 6:09pm
As the United States is one of the largest contributors to atmospheric carbon emissions, what specific policies might the United States enact to reduce its impact on global climate change? Using at least two scholarly or reputable resources and your textbook, discuss the ...
Thursday, June 26, 2014 at 2:59pm
An athlete runs from one end to the other end of a semicircular track whose radius is 70m.what is the total distance covered by the athlete and what is his displacement?
Thursday, June 26, 2014 at 11:44am
A car of mass 2900 kg collides with a truck of mass 4800 kg, and just after the collision the car and truck slide along, stuck together. The car's velocity just before the collision was < 34, 0, 0 > m/s, and the truck's velocity just before the collision was <...
Wednesday, June 25, 2014 at 7:52pm
A bullet of mass 0.062 kg traveling horizontally at a speed of 150 m/s embeds itself in a block of mass 90 kg that is sitting at rest on a nearly frictionless surface What is the speed of the block after the bullet embeds itself in the block?
Wednesday, June 25, 2014 at 2:46pm
In this problem, you will explore the protein lysozyme. Lysozyme is present in hen egg whites and helps to protect the developing chick from bacterial infection by destroying the cell wall of certain bacteria. Lysozyme does this because it is an enzyme, a protein that ...
Wednesday, June 25, 2014 at 2:41pm
use a computer software or graphing utility to solve the system of linear equation. x₁+0.5x₂+0.33x₃+0.25x₄=1.1 0.5x₁+0.33x₂+0.25x₃+0.21x₄=1.2 0.33x₁+0.25x₂+0.2x₃+0.17x₄=1.3 0.25x₁...
Wednesday, June 25, 2014 at 8:45am
A moon orbits a planet in the xy plane, as shown in the figure. You want to calculate the force on the moon by the planet at each location labeled by a letter (A,B,C,D). At each of these locations, what are (a) the unit vector r, and (b) the unit vector F in the direction of ...
Tuesday, June 24, 2014 at 8:19pm
Which best explains why the shore of a lake heats up faster during the day than the lake's water? A.water gives its extra heat to the land. B.water reflects more of the sunlight. C.water let's most of the light go to the bottom. D.water gives much of the heat to the ...
Tuesday, June 24, 2014 at 4:03pm
prepare an inclined plane by using a plane card board sheet, inclined at different angels, using a toy car find the distance covered for different angels, plot graph between the angle of inclination and distance travelled. find the angle for maximum and minimum distance
Tuesday, June 24, 2014 at 1:09pm
if you buy a computer direct from the manuf, $3080 and agreed to repay it in equally 36 months installed at 2.06% interest per month on unpaid balance. How much are the monthly payment? How much will be paid?
Monday, June 23, 2014 at 2:50am
Find the mass of potassium chloride and volume of oxygen at STP liberated when 0.5 moles of potassium chlorate are heated.Also find the moles and mass of oxygen evolved.
Sunday, June 22, 2014 at 3:48am
IN A CLASS OF 130 STUDENTS.85 PASSED IN MATHS, 60 PASSED IN SCIENCE, 10 FAILED IN BOTH. a) how many passed in science but failed in math b)how many failed in exactly one subject
Saturday, June 21, 2014 at 9:40am
Which one of these statements is true about a "bumper-to-bumper" warranty. A. Normal wear and tear is NOT covered by the warranty. B. All expenses except gasoline and routine oil changes are covered by the warranty. C. Every part and system is covered without ...
Friday, June 20, 2014 at 3:39am
Maths literacy,history,life science,english,xhosa,life orantation,geography.
I'am doing grade 11 now and when i passed grd 12 next year.i want to know what caree is good for my subjects ,because i don't know what caree should i take.
Wednesday, June 18, 2014 at 5:27pm
Imagine that you have a rectangular swimming pool, but you have no idea how deep it is. You know that the pool has a volume of 216 m3 . You measured the dimensions of the pool and found that it is 15 m long and 6 m wide
Wednesday, June 18, 2014 at 9:30am
is the work needed to bring a car's speed from 0 to 10 km/h less than. qual to. or more than the work needed to bring its speed from 10 to 20 km/h? in the amounts of work are different, what is the ratio between them?
Tuesday, June 17, 2014 at 2:10pm
1. Why is ice a faster surface for sleddikng than snow? a. Ice is flatter than snow. B. Ice is colder than snow. C. Ice provides less friction. D. Ice has less mass than snow. My answer- A
Tuesday, June 17, 2014 at 11:57am
4. A Beers Law plot was prepared for the reaction A(aq) + B(aq) AB(aq), plotting absorption over AB(aq) concentration. The linear equation for this plot was y = 78.3x. A solution was prepared by mixing 10.0mL of 0.100M A with 5.00mL of 0.100M B and adding enough ...
Monday, June 16, 2014 at 7:58pm
Statistics (Check Answer)
Hi can someone check my answer. I'm not sure why the computer keeps marking it wrong. **Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite ...
Monday, June 16, 2014 at 6:50pm
computer manufacturing company would like to come up with a new laptop computer such that its monitor is 80 a square inches smaller than the present ones. Suppose the length of the monitor of the larger computer is 5 inches longer than its width and the area of the smaller ...
Monday, June 16, 2014 at 8:58am
A rod of length L=1.80m is mounted to a wheel (solid cylinder) of radius R=8.00cm. A massless rope is wound on the wheel, and then connects to a block of mass m=0.250kg. The mass is released from rest and allowed to fall. 1. Find the tension in the rope. 2. How long does it ...
Monday, June 16, 2014 at 6:45am
Kyle has struggled to feel comfortable in science classes with labs since his junior year of high school, when a solution he was working with ignited. He was always cautious with chemicals but his lab partner that year enjoyed seeing what would happen when he mixed random ...
Sunday, June 15, 2014 at 11:53am
I REALLY REALLY NEED HELP SO 1.I need to do an essay asking you (me)to explain what is the difference between erosion,transport,and deposition?... 2.another essay asking me to explain you (me) to explain the destructive and positive effects of a volcanic erupyion?... 3.a short...
Saturday, June 14, 2014 at 4:24pm
What form of pollution, if any, does each energy source cause? How does the economy influence energy source choices? How does location influence energy source choices?
Friday, June 13, 2014 at 8:42pm
science (check please (:)
Luther Burbank was a plant breeder who developed a strain of potato plant that produced more tubers (the part of the root that people eat) of larger size than other potato plants that were grown on farms at the time. This strain of potato was also resistant to the potato ...
Friday, June 13, 2014 at 5:56pm
science (CHECK plz)
How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual...
Friday, June 13, 2014 at 11:48am
science (check plz)
1)When evolution was first proposed, which of the following was used as evidence to support the idea? A)observations of nature B)laboratory experiments C)extensive fossil collections*** D)genetic sequences
Thursday, June 12, 2014 at 11:35pm
science (check please (:)
suppose a species od flowering plant produces primarily blue flowers but also some very pale blue (almost white) flowers the blue color attracts pollinators but the white color does not herbivores feed on this plant and locate it by its blue flower color the white flower color...
Thursday, June 12, 2014 at 6:34pm
science cant figure it out
4 What do scientists now think about the pace of evolutionary change? A Gradualism best explains the pace of evolutionary change. B Punctuated equilibrium best explains the pace of evolutionary change C A combination of both gradualism and punctuated equilibrium explains the ...
Thursday, June 12, 2014 at 3:02pm
Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes? a. homologous structures b. fossils c. reproduction rates*****? d. DNA sequences
Thursday, June 12, 2014 at 2:46pm
A 200 W computer power supply is on 10 hours per day. If the cost of electricity is $0.15/kWh, what is the cost (to the nearest dollar) to run the computer every day for a year (365 days)?
Thursday, June 12, 2014 at 12:51pm
physical science(chemistry change)
Experiment of tiratic oxilic acid wih mass 4,5g and volume of 25ml,nd concentration of 0,05mol.dm.3 against volume of 14ml and 1,79mol.dm3 sodium hydoxide to determine the concentration of sodium hydroxide,,show all the working,aim,results,observation of result,discussion
Thursday, June 12, 2014 at 12:05pm
physical science(chemistry change)
Experiment of tiratic oxilic acid wih mass 4,5g and volume of 25ml,nd concentration of 0,05mol.dm.3 against volume of 14ml and 1,79mol.dm3 sodium hydoxide to determine the concentration of sodium hydroxide,,
Thursday, June 12, 2014 at 12:04pm