Recent Homework Questions About Computer Science
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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
Science
What are the four ocean zones of a marine ecosystem, from most shallow to deepest?
Wednesday, December 19, 2012 at 6:49pm
algebra 1
It certainly pays to check your work! I just took a huge science test. I checked it over twice before I turned it in, and I got an A! My score was 94 out of 100! I figure that each time I checked it, I found half of the mistakes that were there at a time. What would have been...
Wednesday, December 19, 2012 at 5:11pm
science
How do you slove f=ma when a golfball weighs 45.9g and is going down a 13inch board at 0.5 seconds??
Wednesday, December 19, 2012 at 11:53am
science
a crane lifts a metal beam with a mass of 1350 kg. Calculate the amount of work done against gravity if the beam is lifted 37.5 meters in the air.
Wednesday, December 19, 2012 at 10:10am
Science
10. A single weed in plot 6 has a genetic mutation that allows its cells to transport herbicide out through the cell membrane before the weed is harmed. Suppose a student allows weeds to grow in plot 6 and then periodically treats them with herbicide. Represent this ...
Wednesday, December 19, 2012 at 9:40am
Science
9. Prior to herbicide application, a student notes that there are two related species of weeds (A and B) that occur in similar numbers in plot 5. Species A reproduces sexually and species B reproduces asexually. After exposing both weed populations to several applications of ...
Wednesday, December 19, 2012 at 9:39am
Science
8. All cataracts were originally thought to be acquired; however, recent research indicates that some cataracts are genetic in nature. What type of study would be most likely to lend support to the claim that cataracts can be inherited? A. analysis of cataract thickness in ...
Wednesday, December 19, 2012 at 9:39am
Science
7. The mutation for cataracts (c) occurs on a gene represented by the letter E. Owls that are homozygous for the mutation (EcEc) exhibit cataracts. Owls that are homozygous for normal eyes are EE and owls that are carriers of the mutation but do not exhibit cataracts are EEc. ...
Wednesday, December 19, 2012 at 9:38am
Science
6. Owls are nocturnal hunters and depend on their acute vision for survival. If an owl with cataracts is determined to be inherited and she is released back into her natural habitat, she could pass the allele for cataracts on to her offspring. What process would most likely ...
Wednesday, December 19, 2012 at 9:38am
Science
Some strains of laboratory mice have been inbred for many generations, resulting in large numbers of mice with nearly identical genetic makeup. Explain an advantage of using these mice in designing an experiment to test the effects of a new drug. Compare this to a test using ...
Wednesday, December 19, 2012 at 9:38am
science
4. Bacillus thuringiensis (Bt) is a bacterium that contains a gene that results in the production of a natural pesticide that kills insects. Genetic engineers have successfully inserted this Bt gene into the DNA of some corn varieties, allowing the corn to produce its own ...
Wednesday, December 19, 2012 at 9:37am
Science
2. A gamete cell is produced through which process? A.osmosis B.mitosis C.meiosis D.respiration
Wednesday, December 19, 2012 at 9:32am
science
if dna sequence is altered how will protein made change?
Tuesday, December 18, 2012 at 10:49pm
science
how much force is required to keep an overgrown 50 kg ferret moving at a constant velocity across a .33 cos of friction floor?
Tuesday, December 18, 2012 at 9:52pm
math exam tommrow review
hortartio is buying a computer cable for 15.49. if the sales tax rate in his state is 5.25%, what is the total cost of his purchase?
Tuesday, December 18, 2012 at 7:28pm
science climate
if the sea level has risen by 20 cm over the past century on the coast of North america, by how much do you think it has risen over the past century on the coast of India? PLEZZZZZZZ help.
Tuesday, December 18, 2012 at 6:52pm
physical science
1-Patty climbs a tree. While sitting on a branch, she drops a leaf and an acorn at the same time. What would happen?
Tuesday, December 18, 2012 at 6:11pm
science
Both Jim and his mother have a widow's peak but his father doesn't. Jim marries Lisa, who doesn't have a widow's peak. What is the probability that their children will have widow's peak?
Tuesday, December 18, 2012 at 5:43pm
science
A normal man and a heterozygous color blind "carrier" woman have a baby. If they have a girl, what is the probability that the girl will be colorblind. If they have a boy, what is the probability that the boy will be colorblind?
Tuesday, December 18, 2012 at 5:42pm
science
help on the moon
Tuesday, December 18, 2012 at 4:56pm
science
My teacher is teaching us about Punnet Squares. But I don't quite understand how to do it? I have a test before christmas break. I know I need 2 be smart in 7th grade, but I don't know everything. Can u help me Jiskha? I don't want 2 fail science.
Tuesday, December 18, 2012 at 4:42pm
Science
Which of the following is an adaptation that helps plants survive on the floor of a tropical rain forest? A. deep roots B. small seeds C. large leaves D. bright colors
Tuesday, December 18, 2012 at 1:41pm
MORE LANGUAGE ARTS URGENT
Because she wants to go to medical school, Becky will need to take extra science classes, and she also wants to learn Latin. The sentence above is a A. compound sentence. B. complex sentence. C. compound-complex sentence. D. simple sentence. I think..... it's A.... or C I ...
Tuesday, December 18, 2012 at 12:51pm
ALG 2! plz help urgent!!
1.)Four times a certain number is the same as the number increased by 78. Find the number. 2.)A blue bike is $14 less than a red bike. The sum of their prices is $300. How much is the red bike? 3.)Alex is six years older than his sister, Emma. The sum of their ages is 32. How ...
Tuesday, December 18, 2012 at 12:27pm
science
What is itvbarnoeso unscrambled ?
Monday, December 17, 2012 at 11:19pm
Science 8R - help!
I need a definition for Lines of force (8th grade science regents level, ny)
Monday, December 17, 2012 at 9:48pm
science
during jefferson's presidency cities were
Monday, December 17, 2012 at 8:40pm
science
A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the figure below. When 0.46 kJ of heat is added to the gas, it expands and does 186 J of work on the surroundings. What are the values of ÄH and ÄE for this process?
Monday, December 17, 2012 at 8:03pm
science
An experiment calls for you to use 100. mL of 0.91 M HNO3 solution. All you have available is a bottle of 5.00 M HNO3. How would you prepare the desired solution
Monday, December 17, 2012 at 7:33pm
Biology HELP PLEASE
What are goals of science? Choose all that apply. A)to investigate the natural world. B)to establish unchanging facts. C)to explain natural phenomena. D)to make useful predictions based on evidence. I think a and d but im not entirely sure...
Monday, December 17, 2012 at 5:48pm
science
which of the following substances are poor conductors of thermal energy ( more than one answer) wood, glass, copper, plasttic, iron, fiberglass, or air
Monday, December 17, 2012 at 5:31pm
Science
which of the following substances are poor conductors of thermal energy ( more than one answer) a: wood b: glass c: copper d: plastic e: iron f: fiberglass g: air
Monday, December 17, 2012 at 4:54pm
science
What are the major parts of science?
Monday, December 17, 2012 at 4:04pm
Science
If you are asked to determine an object’s speed, what information must you have? A.distance and period of time B.distance and change in position C.period of time and direction D.distance and direction
Monday, December 17, 2012 at 3:53pm
science
A bouncy rubber ball is dropped from a height of about a metre above the ground .it falls to the ground, bounces and then rises back to almost the height from which it was dropped. Describe the main energy transformations that take place from the point at which the ball first ...
Monday, December 17, 2012 at 10:11am
Science
what sends secretions in to the begin changing starches in to usable sugar?
Monday, December 17, 2012 at 9:27am
Earth Science to DAmon
Give positive and negative effects of climate change in Canada..
Monday, December 17, 2012 at 9:22am
EArth Science
Give positive and negative effects of climate change in Canada..
Monday, December 17, 2012 at 9:21am
Science
A skier of mass 75 kg accelerates from rest down the slope as shown in the diagram (It's a triangle with a height of 300 m, length of 400 m, and the hypotenuse is 500 m; The skier is on the hypotenuse. At the bottom of the slope, he is travelling at 40 m/s. What is the ...
Monday, December 17, 2012 at 5:53am
Statistics
A computer repair service found that a random sample of 45 repair costs had a mean cost of $659. Assume that the population standard deviation is $125. Calculate the margin of error, E, for a 95% confidence interval for the population mean µ.
Monday, December 17, 2012 at 2:33am
science
how is the troposphere important to the overall atmosphere?
Monday, December 17, 2012 at 12:54am
social science
Read the speech below. It is a fictitious political speech by Peter, a candidate for the upcoming national election. Then answer the following questions: List all of the arguments in the speech List all of the non-arguments in the speech List all of the factual contents in the...
Monday, December 17, 2012 at 12:12am
Science
is there weather in the tropopause?
Sunday, December 16, 2012 at 11:47pm
Science
what gases are in the troposphere?
Sunday, December 16, 2012 at 11:33pm
Science
A car went from a stop position to 50 km/hr in 5 seconds. What is the accelleration?
Sunday, December 16, 2012 at 11:20pm
science
what are the altitude ranges of the troposphere, stratosphere, mesosphere, and the thermosphere?
Sunday, December 16, 2012 at 7:23pm
English
1..Today the Pink Palace Museum (has, is having, had, will have) a science center too. 1.has
Sunday, December 16, 2012 at 5:25pm
science
What is the acceleration of a 66 kg block of cement when pulled sideways with a net force of 597 N? Answer in units of m/s 2.
Sunday, December 16, 2012 at 4:11pm
science
(c) The kinetic energy of the emitted electrons is measured to be 15.2 eV. What is the first ionization energy of Hg in kJ/mol?
Sunday, December 16, 2012 at 3:32pm
Science
Imagine you are an energy expert on a planning council for a new town to be built on an island. Evaluate resources and methods you will suggest the new town to use.
Sunday, December 16, 2012 at 2:12pm
Adv. Physical Science
an automobile to be transported by ship is raised above the dock by a crane. If the gravitational potential energy of the car is 6.6 x 10^4 and the mass is 960 kg how high has the car been lifted?
Sunday, December 16, 2012 at 2:05pm
environmental science
why are cultivation practices for pest control not widely used today?
Sunday, December 16, 2012 at 11:53am
science
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 152.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Sunday, December 16, 2012 at 11:47am
science
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.23 kg m-3. Under these conditions the total surface area of the balloon is 0.46 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
Sunday, December 16, 2012 at 11:46am
social studies
can you see if i have good grammar,usage, mechanics and spelling Job description: use various types of equipment, develop, secure, and packages. Physical evidence for scientific evaluation and comparison, prepares detailed reports on the observation and activities at the scene...
Sunday, December 16, 2012 at 9:52am
science
if liquid heleum is drank
Saturday, December 15, 2012 at 11:37pm
science
Calculate the density of sulfur hexafluoride gas at 703 torr and 23°C. density is mass/volume so how do i get those from what i am given? also ) Calculate the molar mass of a vapor that has a density of 6.735 g/L at 11°C and 743 torr.
Saturday, December 15, 2012 at 8:18pm
EArth Science to DAMONpl
If sea level has risen by 20 cm over the past century on the coast of North America,by how much do you think it has risen over the past century on the coast of India?Explain.
Saturday, December 15, 2012 at 5:17pm
science
Explain why the following statement is incorrect: Climatologists use the data from ice cores to directly measure past temperatures.
Saturday, December 15, 2012 at 4:03pm
science
Calculate the number of molecules in a deep breath of air whose volume is 2.68 L at body temperature, 37°C, and a pressure of 743 torr (b) The adult blue whale has a lung capacity of 5.0 103 L. Calculate the mass of air (assume an average molar mass 28.98 g/mol) contained ...
Saturday, December 15, 2012 at 3:47pm
physical science
A 3000-kg car bumps into a stationary, 5000-kg truck. The velocity of the car before the collision was +4 m/s and -1 m/s after the collision. What is the velocity of the truck after the collision?
Saturday, December 15, 2012 at 1:45pm
PLEASE HELP EARTH SCIENCE EMERGENCY!!!!
Describe two complexities about Earth's climate system that results in changes happening faster than expected.
Saturday, December 15, 2012 at 11:53am
science
how many milliliters of 5.5M H2so4 must you use to prepare 500ml of 0.2M sulfuric acid solution? Please hurry!!!!!!
Friday, December 14, 2012 at 11:37pm
English
Which is the best way to write this sentence. Today the Pink Palace Museum has a science center too. 1.Today the Pink Palace Museum is having a science center too. 2.Today the Pink Palace Museum had a science center too. 3.Today the Pink Palace Museum will have a science ...
Friday, December 14, 2012 at 11:37pm
TO MS SUE SCIENCE HELP
These are my last 2 questions i need help on.... 1. to determine the density of an irregularly shaped object, a student immersed the object in 21.2 ml of water in a graduated cylinder, causing the level of the water to rise to 27.8 ml. If the object had a mass of 22.4 g, what ...
Friday, December 14, 2012 at 10:11pm
TO: MS SUE SCIENCE HELP
this question has really stumped me but i have tried doing it and have came up with some possible answers: the following letters list some characteristics OF SOLIDS ACCORDING TO THE KINECTIC MOLECULAR THEORY. A.) the particles are very closely packed together B.) The particles...
Friday, December 14, 2012 at 9:45pm
science
how do i ansewr this question? An aerosol spray can with a volume of 400. mL contains 2.25 g of propane gas (C3H8) as a propellant (a) If the can is at 31°C, what is the pressure in the can? (b) What volume would the propane occupy at STP? (c) The can's label says that...
Friday, December 14, 2012 at 9:34pm
Earth Science
Explain why the following statement is incorrect: Climatologists use the data from ice cores to directly measure past temperatures.
Friday, December 14, 2012 at 9:19pm
Earth Science
If sea level has risen by 20 cm over the past century on the coast of North America, by how much do you think it has risen over the past century on the coast of India? Explain.
Friday, December 14, 2012 at 9:07pm
Science
A spring has a force constant of 50000 N/m. How far must it be stretched for its poten- tial energy to be 22 J? Answer in units of m
Friday, December 14, 2012 at 9:01pm
science
A fixed quantity of gas at 22°C exhibits a pressure of 739 torr and occupies a volume of 5.46 (a) Calculate the volume the gas will occupy if the pressure is increased to 1.74 atm while the temperature is held constant.
Friday, December 14, 2012 at 5:31pm
Physical Science
Write a paragraph or two about how and why has the atomic idea/model changed (Greeks 1600-1930)
Friday, December 14, 2012 at 3:23pm
science
Light is shone on a metal and photoelectrons are emitted. Can you tell me the three things from the listbelow which might cause the photoelectron emission to stop. Decreasing the intensity of the light Increasing the frequency of the light Decreasing the wavelength of the ...
Friday, December 14, 2012 at 6:16am
I REALLY NEED HELP IN SCIENCE Plz !!!
If you double the concentrate of yeast in the dough how do you think your results might change ??? Please I really do need help in this thanks
Thursday, December 13, 2012 at 10:31pm
I NEED HELP ASAP WITH SCIENCE PLEASE IT'S IMPORTAN
Since fermentation occus in the cytoplasm of yeast cells explain the role of mitochondria in yeast cells?
Thursday, December 13, 2012 at 10:00pm
Fund of programming 1
Write a program that prints out your course schedule for a single week. Here's an example of the output for one day: Monday 9:00 Computer Science 101 Monday 11:00 Physics 201 Monday 2:00 Dance 153
Thursday, December 13, 2012 at 9:42pm
SCIENCE
which process does not produce a physical change of state? A) MELTING ICE B) HEATING WATER VAPOUR C) FREEZING WATER D) MY GUESS IS
Thursday, December 13, 2012 at 9:12pm
I really need help in science please anyone thanks
Since fermentation occurs in the cytoplasm of yeast cells explain the role of mitochondria in yeast cells ? If anyone can help me this I will truly be graceful
Thursday, December 13, 2012 at 9:07pm
physical science
In 300 words or more explain the similarities and differences between ionic, covalent, and metallic bonding.
Thursday, December 13, 2012 at 8:43pm
Math alg2!
1.)Mike is 5 years more than twice as old as Tom. The sum of their ages is 65. How old is Mike? 2.)Mrs. Computer is 3 times older than her daughter, Mousy. The sum of their ages is 52. How old is Mousy?
Thursday, December 13, 2012 at 8:14pm
Earth Science
Computer models of Earth's climate project increases in the average temperature from 2°C to 6°C by the end of the century. Have these high temperatures ever occurred before in the past 400 000 years?
Thursday, December 13, 2012 at 7:55pm
Science
if the wood in the bowl contains only 1/16 of its original C-14, then its age is four half-lives of C-14.
Thursday, December 13, 2012 at 6:41pm
Science
Does the weight on a Bridge affect the amount of shaking it endures during an earthquake?
Thursday, December 13, 2012 at 5:29pm
science
what is the probable relationship between the rebound centers and the thickness of ice in canada
Thursday, December 13, 2012 at 4:49pm
Science
Is it incorrect to use g/ml as the unit for the density of a solid object? I thought g/ml and g/cc were the same.
Thursday, December 13, 2012 at 3:49pm
Science
If an object with a density of 0.8 g/cc is placed in pure water is it correct that 80% of the object will be below the water line and 20% of the object will be above the water line?
Thursday, December 13, 2012 at 3:44pm
science
in pea plants yellow peas are dominant over green peas. a particular pea plant has one recessive allele for green peas. in which of the following scenarios would the plant have green peas?
Thursday, December 13, 2012 at 3:01pm
Computer
Why are zombie processes dangerous for long running server program?
Thursday, December 13, 2012 at 2:01pm
science
Two point charges are placed on the x-axis a follows: charge q1= +4.00nC is located at x=0.200m, and charge q2= +5.oonC is at x=-0.300m. What are the magnitude and direction of the total force exerted by these two charges on a negative point charge q3= -6.00nC that is placed ...
Thursday, December 13, 2012 at 9:56am
7th grade science
1. A Punnett square shows you all the ways in which ____ can combine. (1 point) alleles eggs sperm colors 2. Mendel called plants that received different alleles for a trait from each parent ____. (1 point) hybrids dominant genotypes phenotypes 3. Which is a possible genotype ...
Wednesday, December 12, 2012 at 10:27pm
science
a piece of styrofoam has a density of 30kg/m3 and a mass of 3.6kg. if the piece of styrofoam has a lenght of 1.2m and a width of 1.0 what is its thickness
Wednesday, December 12, 2012 at 10:11pm
Math
Dave finished 2/5 of his science homework before he went to soccer practice.After practice, he finished another 2/5 of it. What fraction of his homework does Dave have left to do?
Wednesday, December 12, 2012 at 9:12pm
Science
How does a body fossil form? Is it just bones and teeth?
Wednesday, December 12, 2012 at 2:14pm
science
how does closeness to a river affect iceland's climate?
Wednesday, December 12, 2012 at 12:24pm
science
where can i find altitude of Iceland?
Wednesday, December 12, 2012 at 11:45am
science
we know that the arrangement of metals in order of increasing strength of reducing agent is Cu<Fe<Zn<Al<Mg . but in the experiment electrochemical cells,the result that i got was Cu<Fe<Al<Zn<Mg ?? why ??
Wednesday, December 12, 2012 at 8:45am
Science
what is the most common mineral?
Tuesday, December 11, 2012 at 11:14pm
science
what is an ion?
Tuesday, December 11, 2012 at 11:13pm
science
what is an isotope?
Tuesday, December 11, 2012 at 11:13pm
science
how are the elements on the periodic table organized?
Tuesday, December 11, 2012 at 11:12pm
science
where does bonding occur in an atom?
Tuesday, December 11, 2012 at 11:09pm
Science
where are electrons located on an atom?
Tuesday, December 11, 2012 at 11:08pm
Science
What is the most common state of matter?
Tuesday, December 11, 2012 at 11:06pm
English
Check? These right? 1. In the bitter cold, (he, him) and Dad struggled to save the orange crop. In the bitter cold, he and dad struggled to save the orange crop. 2. (Her and me, She and I) have joined the Shutter and Lens. She and I have joined the Shutter and Lens. 3. Phil ...
Tuesday, December 11, 2012 at 8:31pm
Science/Biology
True or False. The volume of the lungs is the most important factor in determining their efficiency.
Tuesday, December 11, 2012 at 8:21pm
Physical Science
Greyhounds can accelerate at 7/m/s2 at a start of the race . How much force does it take a 35 kg dog to produce this acceleration?
Tuesday, December 11, 2012 at 7:11pm
English
Can some one check these? Sentence structures ; 1. In the bitter cold, (he, him) and Dad struggled to save the orange crop. My answer: Him 2. (Her and me, She and I) have joined the Shutter and Lens. My answer: she and I 3. Phil showed Danny and (I, me) his butterfly ...
Tuesday, December 11, 2012 at 6:40pm
Science
i posted this earlier, but no one answered. so i'll try again. Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the ...
Tuesday, December 11, 2012 at 6:28pm
Physical Science
How much force is required to give a 500kg crate an acceleration of 2 m/s2 on an icy surface without friction?
Tuesday, December 11, 2012 at 6:24pm
Physical Science
an object with a mass of 50kg is hurled at an acceleration rate of 30 m/s2. How much force was applied to the object?
Tuesday, December 11, 2012 at 6:19pm
physical Science
How much force is required to give an object with mass of 20kg an acceleration of 12m/s2 ?
Tuesday, December 11, 2012 at 6:06pm
physical science
on hole 9,Bill hit a golf ball. The golf ball weights 0.45 kg.The acceleration on the ball was 4/m/s2. What was the force of Bill swing?
Tuesday, December 11, 2012 at 5:18pm
Physical Science
Bill hit a ball with an acceleration of 40 ms2.The mass of the ball is 0.5kg. What is the force?
Tuesday, December 11, 2012 at 5:12pm
Science
How does technology help people with diseases of the digestive system?
Tuesday, December 11, 2012 at 3:54pm
Science
why have the jet streams moved north because of global warming?
Tuesday, December 11, 2012 at 12:32pm
8th Grade Science
Label these reactants and products: 3Fe + 2 O2> Fe3O4
Tuesday, December 11, 2012 at 10:40am
Science- Chemistry
Determine the type of bonding in each substance. a. Zinc, Zn (s) b. Propane, C3H8 (l) c. Calcium Carbonate, CaCO3 (s)
Tuesday, December 11, 2012 at 9:16am
political science
What changed, if anything, in the American political culture between 2004 and 2008? Further, please feel free to examine changes to 2012, and how they might influence this year's November presidential and congressional elections.
Monday, December 10, 2012 at 9:52pm
science
A cable lifts a 1050-kg elevator at a constant velocity for a distance of 34.1 m. What is the work done by (a) the tension in the cable and (b) the elevator's weight?
Monday, December 10, 2012 at 7:46pm
Science
What is the Mass number and Atomic number for the element B (Boron)? It is for a homework sheet and I am blanked out. I forgot my text book. Can anyone help me?
Monday, December 10, 2012 at 6:49pm
SCIENCE
WHAT IS THE PURPOSE OF LIFE?
Monday, December 10, 2012 at 6:48pm
Math
There are 18 students in Mrs. Meek's 1st period class. Ten of those students are boys. Which of the following shows the ratio of girls to boys A.10 to 18 B.10 to 8 C.4 to 5 D.4 to 9 C? The Science classes at Hutson have a student count of 9 males and 15 females.The art ...
Monday, December 10, 2012 at 6:39pm
science
how does season affect land and sea breezes?
Monday, December 10, 2012 at 11:03am
Science Hurry!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What is the acceleration of an object if it goes from a velocity of +25 m/s to rest in 5.0 s? A. –5 m/s2 B. +5 m/s2 C. –25 m/s2 D. +25 m/s2
Monday, December 10, 2012 at 10:26am
combusion -science
the reaction order with respect to C4H10 =.15 and the reaction order with respect to O=1.6 , the pre exponential factor =4.16.10^9 . the activation energy =125000 kl/kaul. write out an expression for the rate of butane destruction
Sunday, December 9, 2012 at 7:36pm
Science
How do you prepare 500mL of a 2.5M solution of NaOH from the solid compound?
Sunday, December 9, 2012 at 4:08pm
Life science
How long could it take an ecosystem to reach climax community in a primary succession? And a secondary succession?
Sunday, December 9, 2012 at 2:27pm
science
Most of the eastern United States and the West Coast have a climate that is- F)mountain H)desert G)polar J)temperate My answer is temperate, am i right if not please tell me why?
Sunday, December 9, 2012 at 11:10am
Science
Convert 150g Hydrogen Fluoride (Molecular Weight 20) to moles
Sunday, December 9, 2012 at 6:56am
SCIENCE
AT WHAT HEIGHT ABOVE THE EARTH'S SURFACE DOES THE ACCELERATION DUE TO GRAVITY FALL TO 1% OF ITS VALUE AT THE EARTH SURFACE
Sunday, December 9, 2012 at 2:16am
math
a computer store sold a total of 300 items last month. the store sold six times as amny hard drives as they did CD-ROM drives, andhalf as many floppy drives as hard drives. based on this information, how many of each items were sold
Sunday, December 9, 2012 at 12:06am
Computer Science
I need some help about Turing Machines, and prove by reductions. Here are the 2 questions: 1. Sketch the construction of a Turing Machine that decides the language L = a^i where i is not prime. 2. Show that the language 2Strings is not recursive by reducing any one of the two ...
Saturday, December 8, 2012 at 11:51pm
science
Consider a single electron in a 1dimensional box with size a, What is the expected position <x> of the electron at the second excited state? What is the expected value of linear momentum at the ground state ?
Saturday, December 8, 2012 at 5:04pm
Science
Define heat in science terms
Saturday, December 8, 2012 at 12:44pm
science
A steel cable 10 m long is pulled in tension with a stress of 350 MPa. Assume that the Young's modulus of the steel cable is about 200 GPa. If only elastic deformation occurs, what is the resultant elongation in cm?
Saturday, December 8, 2012 at 4:53am
science
Urbium (Ur ) is an upscale element found in big cities. Its oxide UrO2 is not very stable and decomposes readily at temperatures exceeding 66 degree celsius. The figure below shows how the rate of reaction varies with the concentration of UrO2 at 75 degree celsius.
Saturday, December 8, 2012 at 4:39am
Life Science
Name one plant and one animal that previously lived in Antarctica, but are now extinct throughout the entire world.
Friday, December 7, 2012 at 10:26pm
Probability(math)
How many computer passwords can be created with three digits followed by three letters if the first number cannot be 0 or no number or letter can be repeated?
Friday, December 7, 2012 at 8:39pm
7th grade science help
3. Which is a possible genotype of a child of parents with blood types O and AB? (1 point) AO; BO AB; BO BO; OO CO; AB 4. You are looking at four tall pea plants. What are their phenotypes and genotypes, respectively? (1 point) tall; Tt or TT short; tt Tt or TT; tall tt; Short
Friday, December 7, 2012 at 8:31pm
Science
Hello I'm looking to do easy and fast science fair projects? Something environmental Science fair project if you can just suggest some websites thats fine also c:
Friday, December 7, 2012 at 7:31pm
science
The Paleozic Era This era followed the Precambrian time What made it deffernt? What events orrcured. 1 2 3 4 5
Friday, December 7, 2012 at 4:40pm
Science
If the earth's rotation slowed down, how would that affect the winds in the US?
Friday, December 7, 2012 at 4:28pm
Physics-science
A football player weighing 75 kg running at 2 m/s toward west tackles a 70 kg player running 1.5 m/s in the opposite direction. What is the decrease in kinetic energy during the collision?
Friday, December 7, 2012 at 3:19pm
physical science
calculate the change in thermal energy when 120kg of sand warms from 10 degrees celcius to 90 degrees celcius
Friday, December 7, 2012 at 1:22pm
science
You freeze 92g of water, and it becomes a cube of ice. a. What is the mass of the ice cube? b. The cube's volume os 100cm3. What is it's density? c. Will the ice cube float or sink in water?
Friday, December 7, 2012 at 11:35am
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