Recent Homework Questions About Computer Science
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science
Calculate the pH at 0, 10, 90, 100 & 110% titration for the titration of 50.0ml of 0.1M HCl with 0.10M NaOH?
Thursday, January 10, 2013 at 4:46pm
Science
What does the word trasmits mean? And no the word is not transmits it says you can think of a pigment as a kind of sponge that absorbs light of all colors except the ones that it trasmits and reflects. WHAT DOES TRASMITS MEAN??????!!!!!
Thursday, January 10, 2013 at 4:44pm
science
A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s2.) Show your work.
Thursday, January 10, 2013 at 2:18pm
Computer
The company you work for is having financial problems and has cut your software budget for the coming year. What is a legal viable way to save money on future software purchases? A. Use the site license of another company in the same industry. B. Consider open source versions ...
Thursday, January 10, 2013 at 12:27pm
Computer
Your brother is going to serve in the military overseas for four years and asks you about storing his desktop computer in a public storage facility while he is away. The storage units are not temperature controlled. What could be the negative impact of doing this? A. The ...
Thursday, January 10, 2013 at 12:25pm
Computer
Your computer is running very slow. The LED light for the hard drive blinks nearly continually, indicating that the hard drive is spinning even when data is not being saved or read from the hard drive. Based on this scenario, what is probably causing the slowness of the ...
Thursday, January 10, 2013 at 12:24pm
Computer
Your computer is running a lot of services and applications when you log on that you never use. What implications can this mean for your computer? A. Unused services and applications take up valuable hard drive space. B. Your computer uses more power than it needs to. C. 32 ...
Thursday, January 10, 2013 at 12:22pm
science
Name 5 Main Chacteristics In Precambrian Time I looked in the book but I couldn't find anything
Thursday, January 10, 2013 at 10:31am
Science
Compare the nature greenhouse effect process with the human induced. 2. What are the greenhouse gases? Which one is the biggest concern? 3. What are scientists doing to collect data? 4. What role does the carbon cycle play in this problem? 5. What are the political and ...
Thursday, January 10, 2013 at 10:11am
science
an ant walk 4cm east get some rest and continues for another 3cm in the same direction what is the displacement traveled by the ant?
Thursday, January 10, 2013 at 8:31am
science
A researcher studying climamatewould most likely study the causeof what
Wednesday, January 9, 2013 at 10:45pm
science
What is an acrostic poem for the word mesozoic? (must represent the word as you go as in the word relating to that word(: PLEASE RESPOND ASAP!!!!!!!!
Wednesday, January 9, 2013 at 9:33pm
science
A golfer takes two putts to sink his ball in the once he is on the green. The first putt displaces the ball 6.00 m east, and the second putt displaces it 5.40 m south. What displacement would put the ball in the hole in one putt? and how do I show this graphically?
Wednesday, January 9, 2013 at 8:49pm
Science
What are some of the environmental problems related to development of natural resources such as coal, oil and gas?
Wednesday, January 9, 2013 at 7:53pm
Science
What is the value of resource conservation and what are some strategies? What are some alternative energy sources that could become more mainstream?
Wednesday, January 9, 2013 at 7:52pm
Science
What is the function of turgor pressure?
Wednesday, January 9, 2013 at 7:27pm
science
how much work was accomplished by the fall?
Wednesday, January 9, 2013 at 6:58pm
science
how much potential energy did the object have before it fell?
Wednesday, January 9, 2013 at 6:56pm
science
a cart was pulled for a distance of 1 kilometer and the amount of work accomplished equal 40.000 joules. with what force was the work accomplished?
Wednesday, January 9, 2013 at 6:42pm
science
a cart was pulled for a distance of 1 kilometer and the amount of work accomplished equal 40.000 joules. with what force was the work accomplished?
Wednesday, January 9, 2013 at 5:54pm
physical science
push a box across a table with a force of 5 newtons and the box moves 0.5 meter. how much work has been accomplished?
Wednesday, January 9, 2013 at 5:50pm
science
how are a cube and a rectangular prism alike? How are they different?
Wednesday, January 9, 2013 at 5:47pm
Science
What produces the major ocean currents and how does the world's climate affect these currents? Thank you for your help!
Wednesday, January 9, 2013 at 5:41pm
Geological Science
What is the value of resource conservation and some strategies for conservation? What are some alternative energy resources that could become more mainstream?
Wednesday, January 9, 2013 at 5:22pm
Science
Glass bricks are used where people want light allowed through, but still have privacy. What do the bricks do to make this happen?
Wednesday, January 9, 2013 at 3:44pm
science
What happens to refraction when the angle of incidence lays on the normal line? Please help I have searched everywhere and can't find the answer!!!
Wednesday, January 9, 2013 at 2:54pm
science (revision)
I have a test on electricity on Friday and I wandering if I could get a basic summary of what I should know. I'm British so I don know what grade I am but I'm 11 so aound that sort of basic level please!!! Thanks.
Wednesday, January 9, 2013 at 1:58pm
8th Grade Science I need help!!!!
18. Explain how the three types of fossils (trace, body, and cast) are formed. Please help!!
Wednesday, January 9, 2013 at 12:47pm
Visual Basic (Computer)
What is programming language syntax? Why is it important?
Wednesday, January 9, 2013 at 12:33pm
Visual Basic (Computer)
In the following examples, identify the condition a program would detect (the first exercise is solved for you): a. 4 is blank 3 a. greater than b. 8 is blank 8 b. blank c. 17 is blank 17.8 c. blank d. 75 is blank 85 d. blank e. blank e "Microsoft" is blank "...
Wednesday, January 9, 2013 at 12:00pm
science
A 1.98 10-9 C charge has coordinates x = 0, y = −2.00; a 2.73 10-9 C charge has coordinates x = 3.00, y = 0; and a -4.95 10-9 C charge has coordinates x = 3.00, y = 4.00, where all distances are in cm. Determine magnitude and direction for the electric field at the ...
Wednesday, January 9, 2013 at 11:19am
science
A rock is thrown vertically upward with an initial speed of 100 ft/s. At the same instant another rock is thrown vertically downward from the top of a 280 ft cliff with an initial speed of 40 ft/s. Neglecting air friction,
Wednesday, January 9, 2013 at 6:45am
physical science
a car go on 54kmph . the driver see a person about 46m .Then the driver click the stop bottom . the car stop 1m a front of the people. what is the time to stop it ?
Wednesday, January 9, 2013 at 1:16am
Science
What happens to refraction when the angle of incidence lies on the normal line?
Wednesday, January 9, 2013 at 12:26am
SCIENCE -HELP!!
How does the discovery of seafloor spreading help to explain the mechanism behind why plates move??
Tuesday, January 8, 2013 at 11:48pm
science
determine the molarity of the following solution 31 g MgF2 in 55ml H20
Tuesday, January 8, 2013 at 11:31pm
science
sodium flouride is soluble in water at the rate of 4.09g/100g of H20. how much will dissolve in 500g of water
Tuesday, January 8, 2013 at 11:14pm
science
what is Molarity of a solution of 4 moles of NaCl in 2L of water?
Tuesday, January 8, 2013 at 11:10pm
science
what is the molarity of a solution of 232 g of NaCl in 2.1 of water?
Tuesday, January 8, 2013 at 11:08pm
science
determine the molarity of the following solution 31 g MgF2 in 55ml H20
Tuesday, January 8, 2013 at 11:04pm
science
How would you find a mass of a rolling marble?
Tuesday, January 8, 2013 at 10:41pm
Science
What things in the environment where I live in Hollister, CA determine the local ecosystem?
Tuesday, January 8, 2013 at 10:13pm
Living things Science
Organisms that make their own food are called ____________________________. :D
Tuesday, January 8, 2013 at 8:10pm
Living things Science
The factor that a scientist changes in a controlled experiment is the _____________ Please help :]
Tuesday, January 8, 2013 at 8:01pm
Science
What is the idea that living things can come from nonliving sources called?
Tuesday, January 8, 2013 at 7:57pm
Science
What are thease layers of earth made of? Crust Lower mantel outer core inner Core. and asthenospher and lithosphere
Tuesday, January 8, 2013 at 7:18pm
science
how did the invention of the microscope help doctors to understand what caused diseases.
Tuesday, January 8, 2013 at 6:11pm
Science
How many grams of oxygen gas would be needed to react with 75 grams of hydrogen gas
Tuesday, January 8, 2013 at 6:08pm
Science
Does anyone know a Commensalism of the Baltimore Checkerspot? If you do know, I need the awnser ASAP. Please help. Thank you.
Tuesday, January 8, 2013 at 5:43pm
science
which would have a greater maximum kinetic energy, a long pendulum or short pendulum?
Tuesday, January 8, 2013 at 5:39pm
physical science
Mike jogs east at a rate of 4 mph. The wind is blowing west at 1 mph. What is Mike's velocity?
Tuesday, January 8, 2013 at 5:13pm
science
(a) Speculate about how the invention of the microscope might have helped doctors to understand what caused diseases.
Tuesday, January 8, 2013 at 5:08pm
science
why does the period of the pendulum decrease if the length of the pendulum decrease?
Tuesday, January 8, 2013 at 4:35pm
mechanical science
a c accelerates from rest in a straight line. after 12 seconds, it's velocity is measured as 42 m/s. use one of the linear equations of motion to calculate the car's acceleration
Tuesday, January 8, 2013 at 4:28pm
science
water in gas form is called
Tuesday, January 8, 2013 at 4:14pm
Physics, science
A sonar generator on a ship produces periodic ultrasonic waves at a frequency of 2.2 MHz. The wavelength of the waves in seawater is 5.310-4 m. When the generator is directed downward, an echo is received 15.2 s later. How deep is the ocean in m?
Tuesday, January 8, 2013 at 2:43pm
science, physics
A block of mass 0.25 kg is connected to a spring with spring constant 35 N/m. The block is oscillating on a frictionless horizontal surface. Its speed as it passes through its equilibrium position is 1.04 m/s. What's the total energy of the system?
Tuesday, January 8, 2013 at 12:52pm
science
When scientists use one of their five senses to gather information, they are?
Tuesday, January 8, 2013 at 9:21am
Information Technology (2 Qs)
1) Order the following components in order of their speed starting from the fastest, and ending with the slowest: CD, Random Access Memory (RAM), Tape, Cache. 2) A computer system may have an extremely fast process, and extremely fast memory, yet the performance of the ...
Tuesday, January 8, 2013 at 6:10am
science
At what angle of incidence does refraction stop and reflection begin?
Tuesday, January 8, 2013 at 1:18am
science
shale gas is a conventional natural gas deposit
Tuesday, January 8, 2013 at 12:23am
Science
What role does induction play when lightning strikes Earth?
Monday, January 7, 2013 at 9:48pm
science
can a place that receives very little rain still receive a lot of precipitation? explain your answer
Monday, January 7, 2013 at 9:45pm
science
what is the difference between weathering and erosion
Monday, January 7, 2013 at 9:15pm
Science
If bacteria doubles every 20 minutes, how long until you have a billion spores
Monday, January 7, 2013 at 8:13pm
Science
Use the words to fill in the blanks of the paragraphs. 1.plants 2.pieces 3.moisture 4.ice wedging 5.acids 6.carbon acid 7.freezing 8.chemical 9.oxidation 10.temperatures 11.minerals 12.climate 13.desert 14. mechanical 15.cracks 16 reacting Weathering is the breaking of rocks ...
Monday, January 7, 2013 at 7:57pm
math
In 1980, the computer hard disk had a maximum capacity of 10 to the 7th power bytes. In 2000 computer hard disk capacity had increased to 10 to the 11th power bytes. By what factor had hard disk capacity increased between 1980 and 2000?
Monday, January 7, 2013 at 7:51pm
Science
Two students measured the outside temperature at noon from a thermometer hung in the playground. The two students recorded very different measurements. Give two possible reasons for why the students got such different measurements. I know one reason is one student is reading C...
Monday, January 7, 2013 at 7:31pm
computer
you know when people show a film and they have some part cut off like when: you are holding a piece of paper but the hand part doesnt show because you did something to the film to make it look like the paper is flying. How do you do that?
Monday, January 7, 2013 at 7:29pm
science
two cyclists are riding their bikes up a steep hill. hessica rides her bike straight up the hill. adrian rides his bike up the hill in a zigzag path. adrian and jessica have identical masses. once they reach the top of the hill, does adrian have less gravitational potential ...
Monday, January 7, 2013 at 6:25pm
science
how much gravitational potential energy does the pile driver have when it is lifted to a height of 15m? show work please
Monday, January 7, 2013 at 6:25pm
science
how much gravitational potential energy does the pile driver have when it is lifted to a height of 15m? show work please
Monday, January 7, 2013 at 6:09pm
science
what happens when you mix sugar with a cold drink
Monday, January 7, 2013 at 5:11pm
Math
in the local mall there are twice as many clothing stores as there are music stores. there are twice as mny music stores as there are computer stores. if there are 16 clothing stores, how many computer stores are in the mall?
Monday, January 7, 2013 at 4:54pm
physical science
When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find the number of moles of oxygen that are needed to form 6 mol of Fe2O3. Show your work.
Monday, January 7, 2013 at 4:41pm
physical science
Under a pressure of 200 kPa, a confined gas has a volume of 2,500 cubic meters. The pressure acting on the gas is increased to 500 kPa. What is the new volume of the gas if the temperature remains the same?
Monday, January 7, 2013 at 4:01pm
Science math
Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 1104 days? How much polonium is in the sample 1104 days later?
Monday, January 7, 2013 at 2:57pm
Science Help! I have a deadline!!
Match the following. 1. Rocky Mountain spotted fever 2. information about plants 3. eroded material 4. sun, wind, thermal 5. yellow fever and malaria 6. receives radio waves 7. major problem of underdeveloped nations 8. method of mountain formation 9. producer of oxygen a. ...
Monday, January 7, 2013 at 1:28pm
Science Somebody Help Me Please..I have a deadline
1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...
Monday, January 7, 2013 at 1:23pm
science
a reference solution is to be prepared with 5PPM parabenzopyrene(252 mol. wt.)the quantity of parabenzopyrene required for preparing one litre 5PPM solution is
Monday, January 7, 2013 at 10:49am
science
the wavelength of the sound emitted by a dog is 0.009 m ; what is the frequency of the whistle ? ( use the formula : V= frequency x wavelength
Monday, January 7, 2013 at 10:03am
Science
I have to do a venn diagram of the earth and mars,how are they alike and how they are different
Monday, January 7, 2013 at 9:00am
science
Calculate pH of 0.01 M CH3COONa solution if pKa of CH3COOH is 4.74.
Monday, January 7, 2013 at 6:49am
science
At what temperature will water change. From liquid to . Solid.
Sunday, January 6, 2013 at 11:46pm
Physical science
Compute the gravitational force between two 1.00 kg lead spheres whose centers are 1.00 m apart?
Sunday, January 6, 2013 at 9:48pm
science
what is the weight of the balloon with air
Sunday, January 6, 2013 at 9:36pm
Earth Science
How you would determine the density of a block that measures 3 cm X 3cm X 3cm.
Sunday, January 6, 2013 at 7:33pm
math
I am in 5th grade and i just want to know something : if i take science do i have to take classes that includes frog diseccetion and the human body? Because that stuff grosses me out and creeps me out.
Sunday, January 6, 2013 at 2:07pm
Algebra
Mitch has 3 tests to study for on Thursday night. He needs to spend twice as much time on Science as English. He also has to study Math and he can learn that in 1/2 the time it takes to study English. He has four hours to study. What is the maximum amount of time, to the ...
Sunday, January 6, 2013 at 12:49pm
science
why does the sun come out write after i rains
Sunday, January 6, 2013 at 11:56am
science
What shadow would a 137cm tall child cast at 9am 10am 11am 12noon 1pm 2pm 3pm and 4pm if they were facing north in january?
Sunday, January 6, 2013 at 10:57am
science
please give me 10 examples of suspension
Saturday, January 5, 2013 at 7:33am
science
A stone is dropped into a well of 80m deep. The sound of splash is heard 4.20 sec after the stone is dropped. Find the velocity of sound in air.
Saturday, January 5, 2013 at 6:40am
Science
A golf ball was hit and projected in an angle of 60 degrees with the horizontal. if the initial velocity of the ball was 50m/s, calculate the following: a. the time the golf ball was in the air b. horizontal distance the ball traveled c. maximum height the ball reached
Friday, January 4, 2013 at 9:36pm
science
speech on recycling
Friday, January 4, 2013 at 8:39am
Earth science
Review the 1906 Quake that hit San Francisco and answer the questions below. 1. San Francisco is found to have been constructed on several large strike-slip faults. If these faults become active, what specific type of damage (based on the type of fault involved) would you ...
Thursday, January 3, 2013 at 3:08pm
Science
in a liquid form which one could be considered an electrolyte H2so 4 Hcl, C3h8 or Naci
Thursday, January 3, 2013 at 2:30pm
physical science
Using Fig. 4.28 as an example, how much applied force would the man need to have to pull the block (weight or output force = 500 N) if the rope he is holding is 7 m long and the rope on the pulley is 2 m long? (Hint, the pulley is a simple machine)
Thursday, January 3, 2013 at 1:20pm
science
can a force act on an object ever when it is not in contact . give examples
Thursday, January 3, 2013 at 9:34am
science
can a force of IN acting over an area of 1m^2 called
Thursday, January 3, 2013 at 9:33am
Science 8R - HELP!
Problem - What's the difference between reflection and refraction? hypothesis - !?!?!?!? please helP!!!
Wednesday, January 2, 2013 at 8:35pm
physical science
8. Which one has more momentum? Which has the greater impulse? a. A 2000 kg car moving at 5 m/s b. A 9 g bullet traveling at 450 m/s
Wednesday, January 2, 2013 at 6:30pm
physical science
4. Jane weighs 150 lbs and Bob weighs 220 lbs. They decide to try skydiving. If they jump at the same time, who would reach the ground first
Wednesday, January 2, 2013 at 6:29pm
science
A rock of mass 50kg is held at 45meter from the ground.it is allowed to fall freely.find the change in potential energy,when it is a height at 20meter from the ground.also find the speed at this time and kinetic energy ?
Wednesday, January 2, 2013 at 10:09am
Physical Science
What is the acceleration of an airplane with an initial velocity of 150 m/s and a final velocity of 175 m/s and the velocity change was made in 5 seconds? .
Wednesday, January 2, 2013 at 12:18am
science
Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid PLEASE SO LOST(explanation of why you did of what woulp help so much) ...
Tuesday, January 1, 2013 at 9:03pm
earth science
How does the wavelength of the infrared portion of the electromagnetic spectrum differ from that of the visible portion of the spectrum?
Tuesday, January 1, 2013 at 8:39pm
science
The output of a laser is 3.000 W when pumped at 7 times the threshold. The optical mode in the laser is a cylinder with a diameter of 0.8 mm, and the output mirror transmission is 0.25 %. Determine the saturation intensity of the laser transition
Tuesday, January 1, 2013 at 1:37pm
the science of the mind (psychology)
2. which of the following statements regarding depth perception is true? a. texture gradient is a monocular cue b.experience teaches us to perceive relative size as an indicator of the color of an object c.motion parallax is detected because we perceive binocular disparity d....
Tuesday, January 1, 2013 at 8:19am
Science
What is science?
Monday, December 31, 2012 at 4:37am
Science
Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid
Saturday, December 29, 2012 at 9:15pm
Science Help
Please help , I need to make a solar powered car. Where would I be able to get 3v motors ?
Saturday, December 29, 2012 at 6:44pm
science
water freze and the boulder expands what is this
Friday, December 28, 2012 at 4:42pm
math inequalities
I wrote a question before but the greater than or equal to sign cameout as something else, so here is the question 3/4x>1/4x+8 I did -1/4 x to each side to get 2/4x>8 4/1*2/4x>8/1*4/12/2x>8/1*4/1 x>16 The question uses> with the line under it, making it ...
Friday, December 28, 2012 at 3:12pm
maths
5. There are two groups of subjects one of which contains 5 science subjects and 3 engineering subjects and the other consists of 3 science and 5 engineering subjects. An unbiased die is cast. If the number 3 or number 5 turns up, a subject is selected at random from the first...
Friday, December 28, 2012 at 4:00am
Science
N2O5 gives 2NO2 plus 0.5 O2. Rate for first order reaction. K = 5 * 10/10000 R = 0.30 mol/liter after 40 min. What is the [C] of N2O5 and NO2 ?
Friday, December 28, 2012 at 1:02am
science
the___take place in the cell
Thursday, December 27, 2012 at 12:19pm
science
What is the acceleration of a boy on a skateboard is the net force on the boy is 14 N the total mass of the boy and a skateboard is 58 kilograms you said no
Thursday, December 27, 2012 at 12:10pm
science
who discovered the concept of density?
Wednesday, December 26, 2012 at 7:35pm
Computer.....
I want to make a jeopardy game out of a powerpoint, so is there any format I can use. Please post link below.
Tuesday, December 25, 2012 at 1:21pm
science
in which layer are satellites located?
Tuesday, December 25, 2012 at 12:03am
science- atmospheric layer
why is the mesosphere important to the atmosphere?
Monday, December 24, 2012 at 11:08pm
science
what is the temperature range of the stratosphere?
Monday, December 24, 2012 at 10:29pm
science
what is the temperature range of the stratosphere?
Monday, December 24, 2012 at 8:10pm
Science 24
calculate the momentum of a 2000-kg truck travelling 19 m/s.
Monday, December 24, 2012 at 5:43pm
science
I would like to know the lists of situations in which DNA fingerprinting is useful
Monday, December 24, 2012 at 1:13am
Comp Hardware
Your neighbor gives you his old computer. The memory modules in it have 184 pins and two notches. What type of memory is this? A. DDR2 B. DDR3 C. SIMM D. Direct RDRAM the ext is pretty ambiguous but I am leaning toward C. SIMM
Sunday, December 23, 2012 at 9:42pm
science
A boy standing on top a building with a height of 500m throws a ball vertically upwards. The balls take 40s to reach to the ground. Neglecting the height of the boy throwing the ball, determine the velocity of the ball.
Sunday, December 23, 2012 at 10:05am
Science
A student weighs 36.4kg suppose his entire body is made of electrons. How many electrons are present in his body. What would be charge in his body.
Sunday, December 23, 2012 at 8:24am
computers
usually when I'm on mail or facebook, my friends post a picture of what there on on the computer, but how do you take a picture of the website your on?
Saturday, December 22, 2012 at 7:08pm
Science reading
How might scientists track humpback whales if they couldn't follow their songs
Saturday, December 22, 2012 at 8:22am
chemistry,science
how were volcanoes formed ?
Saturday, December 22, 2012 at 7:12am
algebra
You decide to market your own custom computer software. You must invest $3,255 for computer hardware, and spend $2.90 to buy and package each disk. If each program sells for $13.75, how many copies must you sell to break even?
Friday, December 21, 2012 at 5:20pm
science
What is the most abundant metal in sea water
Friday, December 21, 2012 at 2:54pm
Science
Is there a website which tells me how something moves through my body when I drink it?
Friday, December 21, 2012 at 12:51pm
Science
For lunch, you have a turkey sandwich on wheat bread with mayonnaise and lettuce. Describe how each component of this meal would be broken down in the digestive system. Thanks.
Friday, December 21, 2012 at 7:57am
Science need help
Astronomers believe that the biggest stars in the Galaxy may be a hundred times more massive than the Sun, but are a million times brighter. Would you expect such stars to have longer, shorter or comparable lifetimes to that of the Sun?
Friday, December 21, 2012 at 4:59am
Science
is the change of seasons an example of climate change?
Friday, December 21, 2012 at 12:48am
science
if the car had a mass of 2050 kg and was traveling 25 miles per second, what was the car momentum?
Thursday, December 20, 2012 at 5:48pm
Science
Is there a website where I can find more about the climate in my area?
Thursday, December 20, 2012 at 5:17pm
science
why is using phenophthalin in determination of acetic acid in vinegar.
Thursday, December 20, 2012 at 2:04pm
science
A scientist collects a sample of carbon dioxide that contains 25 moles of CO2. In grams, what is the mass of the sample?
Thursday, December 20, 2012 at 1:01pm
science
Can we measure temperature of 45 degrees celcius using clinical thermometre ?
Thursday, December 20, 2012 at 6:22am
mechanical science
11. In an accident a freeway sports car made skid marks 200 m long along the pavement. The police estimated the braking acceleration of the car to be – 0.8g under the road conditions prevailing. Determine the speed of the sports car when the brakes were applied.
Thursday, December 20, 2012 at 4:01am
mechanical science
10. A car is moving in a straight line starts from rest, accelerates uniformly at 12 m/s2 for the first 5s, then travels at uniform speed for the next 2s and finally decelerates uniformly at 4 m/s2 for the next 5s. Draw the acceleration-time graph, velocity-time graphs and ...
Thursday, December 20, 2012 at 4:01am
TO MS.SUE... SCIENCE
who discovered the element gold and when? Ive tried looking it up but a lot of answers are: Known to the Ancients and they give an unknown date of when it was found. Is this correct since im pretty sure gold is very very old. what is your answer? pleeeeeeeese help.... thanks :)
Wednesday, December 19, 2012 at 9:33pm
Science* Please Help Me !
How would cell division help heal a broken bone? Why do cuts and disappear when in the process of cell division? What is the main purpose for cell division?
Wednesday, December 19, 2012 at 8:06pm
Science
How might a sucker mouth help a tadpole survive in a river ecosystem? A. It helps the tadpole stay in place while feeding. B. It lets the tadpole move quickly through water currents. C. It enables the tadpole to defend itself from its predators. D. It allows the tadpole to ...
Wednesday, December 19, 2012 at 7:45pm
Physical Science
An exercise spring has a spring constant of 315 N/m. How much work is required to stretch the spring 30 cm? What force is needed to stretch the spring 30 cm?
Wednesday, December 19, 2012 at 7:31pm
Science
4. Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each name. • RbF • CuO • (NH4)2C2O4
Wednesday, December 19, 2012 at 7:09pm
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