Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

Science 1 question
Choose and describe 2 interesting uses of electricity. I chose an electric car but im having trouble choosing the other one. Please give me good examples so I could choose. Thanks :)
Wednesday, April 10, 2013 at 12:04am

Computer (Visual Basic)
You are in the process of selecting the BackColors and ForeColors for you new application. When you originally learned to use Visual Studio, you were only aware of one of the palettes that was available to you, but your developer colleague informs you that you have more ...
Tuesday, April 9, 2013 at 11:41pm

science questions true or false!
5. Air is a good conductor of heat. (1 point) true false 6. When you hold a ball above the ground it has kinetic energy. (1 point) true false 7. A good refrigerant must have a low boiling point. (1 point) true false
Tuesday, April 9, 2013 at 8:11pm

science 3 questions!!
2. A device that can be used both for cooling and heating is a _____. (1 point) heat engine compressor heat pump vaporizer 3. All objects emit _____ radiation. (1 point) electromagnetic kinetic thermal solar 4. Fast food restaurants keep food hot with infrared lamps. The heat ...
Tuesday, April 9, 2013 at 8:07pm

Science ASAP please
1. Which of the following is an example of density? (1 point) ice floating on top of a river convection currents that cause wind oil spill cleanup all of the above 2. What type of property is density? (1 point) chemical property size-independent physical property all of the ...
Tuesday, April 9, 2013 at 8:05pm

science 8th grade
1. The thermal energy of an object is _____. (1 point) its potential energy its average kinetic energy its potential energy minus its kinetic energy its kinetic energy plus its potential energy Thanks, jessica :)
Tuesday, April 9, 2013 at 8:05pm

Science 2 questions
how and where is electricity generated in British Columbia, Canada? describe how most of the electricity is generated in England or another country. But it must be different than what occurs in B.C. Please help, thanks:)
Tuesday, April 9, 2013 at 7:37pm

computer programming
how do I figure out the math problem for Excel 2010?
Tuesday, April 9, 2013 at 5:43pm

science
describe the path of light rays from a leaf to the retina
Tuesday, April 9, 2013 at 4:35pm

science
explain the priniciples of light thaat enable the convex lens to function as it does
Tuesday, April 9, 2013 at 4:35pm

Science
Please please help this is the second time I have posted this question. Calculate the amount of work it will take to lift a lawn mower with a mass of 8kg onto the back of a truck which is 0.75m off the ground.show all conversions in your work.
Tuesday, April 9, 2013 at 3:23pm

computer
the meaning of this words â€¢ FOR- â€¢ DO - â€¢ SELECT- â€¢ MID$- â€¢ ASC- â€¢ SQR- â€¢ LEN- â€¢ LEFT$- â€¢ TIME$- â€¢...
Tuesday, April 9, 2013 at 1:54pm

science
A hydraulic jack is needed to raise an object with a force of 4000 N to a height of 3 metres above the ground. Will the jack do the job? (Answer after working through the rest of the question. I would really appreciate it if someone would please help me with this question. ...
Tuesday, April 9, 2013 at 12:47pm

social science statistics
a professor was curious to whether the students in a very large class she was teaching who turned in their first scored differently from the overall mean on the test.The overall mean score on the test was 75 with a standard deviation of 10;the score were approximately normally...
Tuesday, April 9, 2013 at 11:33am

Science
Person weighing 650N lies on a bed of nails,each nail has area of 1m2 Assume 4Nm^-2 pressure is painful what is the smallest number of nails they could lay on and not be hurt
Tuesday, April 9, 2013 at 6:24am

science
Do temperatures get warmer or colder as you move from the lower stratosphere to the top of that layer?.And how big is the change?.
Tuesday, April 9, 2013 at 1:12am

science
A biochemist used 10.000 grams of P-32 in a test on plant growth but forgot to record the date of his experiment. When he measured the amount of phosphorus-32 on another day, he found only 1.250 grams of the isotope remaining. If the half-life of P-32 is fourteen days, when ...
Monday, April 8, 2013 at 9:01pm

Physical science
According to the law of the conservatives of mass, if the products o a reaction have a mass of 64.0 g, then the total mass of the reactants:
Monday, April 8, 2013 at 8:43pm

science
1. _____ is the process by which food is broken down so that nutrients can be used by the body. (1 point) Absorption Digestion Elimination Ingestion 2. What type of digestion takes place in the mouth? (1 point) chemical mechanical chemical and mechanical neither chemical nor ...
Monday, April 8, 2013 at 7:51pm

stat probability
At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?
Monday, April 8, 2013 at 7:38pm

Science
Two parents have three children. They have two girls and one boy. What is the probability that the next child will be a boy?
Monday, April 8, 2013 at 6:52pm

science
With the class watching from a safe (and dry!) distance below, suppose the student drops the balloon and the balloon hits the sidewalk with a force of 20 N. How much work was done on the sidewalk by the balloon?
Monday, April 8, 2013 at 6:38pm

Science --
If you mixed 25.00g of salt in 100.00mL of water and it all dissolved, what would the concentration be in g/mL?
Monday, April 8, 2013 at 6:18pm

science/math
A barrel contains 15 liters of water. After a boulder is dropped into the water, the reading on the barrel is 22 liters. What is the volume of the boulder?
Monday, April 8, 2013 at 5:47pm

Science
Describe what happens to body systems over time from infancy to adulthood to older adulthood. In your own words please. thank you guys ;)
Monday, April 8, 2013 at 5:24pm

Science ms sue please help
A horse and a donkey can mate with each other. Their offspring,called a mule, is not fertile. Do horses and donkeys belong to the same species? Explain your answer. A scientist collects wild rabbits that live at sea level and moves them to the mountains. One year later, the ...
Monday, April 8, 2013 at 5:20pm

math
computer can do 1000 operations in 4.25 X 10 to the 6th power, how many operations can this computer do in an hour?
Monday, April 8, 2013 at 5:10pm

Science
PLEASE HELP MY DAUGHTER WANTS ME TO CHECK HER HOMEWORK AND I DON'T KNOW TO MUCH ABOUT SCIENCE LOL! BUT PLEASE HELP PLEASE PLEASE HELP ME PLEASE 'IN YOUR OWN WORDS PLEASE' PLEASE PLEASE PLEASE 'IN YOUR OWN WORDS' IN YOUR OWN WORDS PLEASE' I'M BEGAN ...
Monday, April 8, 2013 at 5:00pm

physical science
The orbital velocity of an earth satellite in an orbit 400 mi above the earth?
Monday, April 8, 2013 at 4:59pm

science P2
calc the volume of solution that contains 5,3 g of sodium carbonate if the solution has a concentration of 0,4 mol-dm (to the power of minus 3)
Monday, April 8, 2013 at 4:34pm

physical science chemistry
calculate the mass of sodium nitrate needed to make 550 ml of solution of concentration 0;2 mol.dmc to the power of minus 3
Monday, April 8, 2013 at 4:29pm

Algebra 2
A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher choose the students?
Monday, April 8, 2013 at 4:21pm

Life science, history, geography, and maths literacy
I'm in grade 11 and i was wondering if you could help me with this question. I'm doing those subjects and i would love to take a career that is linked in those subjects, what would they be?
Monday, April 8, 2013 at 4:09pm

science
10 students whose combined mass is 700 kg ride down 30 m in a elevator. How much thermal energy is produced in the elevator system by the loss in gravitational potential energy of the students
Monday, April 8, 2013 at 4:01pm

Please help science
Most organisms reproduce: Sexually Asexually By meiosis Is it asexually or sexually not sure I think it is asexually though
Monday, April 8, 2013 at 2:53pm

jardan high. general science
water,anchorge,photosynthesis,mineral,food,support. The main functions of roots are { } and taking in { } and { }. The stems { } the other parts of the plant and transport { },{ } and around the plant.the leaves are the main part making { } by { }.
Monday, April 8, 2013 at 2:43pm

Science
When 2 resistors, R1 and R2 are connected in series across a 6V battery the potential difference across R1 is 4V. When R1 and R2 are connected in parallel to the same battery the current through R2 is 0.45 A. Find the values of R1 and R2. Thanks :)
Monday, April 8, 2013 at 2:25pm

business math
A computer with software costs $2,987, and Docie Johnson has agreed to pay 19% per year finance charge on the cash price. If she contracts to pay the loan in 18 months, how much will she pay each month?
Monday, April 8, 2013 at 2:17pm

science
Suppose you hang an object of weight W by a string from a hanging spring scale, such as the kind used in some grocery stores. You then hang the scale with the object from the ceiling of an elevator. When the elevator is standing still, the scale will read the actual weight of ...
Monday, April 8, 2013 at 1:46pm

Science
A good refrigerant must have a low boiling point. true false I think it is true...?
Monday, April 8, 2013 at 12:37pm

Science
When you hold a ball above the ground it has kinetic energy. true false I think it is False - that is potential energy..right?
Monday, April 8, 2013 at 12:33pm

Science
Air is a good conductor of heat. true false I think it is false...?
Monday, April 8, 2013 at 12:29pm

Science
Fast food restaurants keep food hot with infrared lamps. The heat is transferred to the food by _____. condensation conduction convection radiation I think it is radiation...?
Monday, April 8, 2013 at 12:25pm

Science
All objects emit _____ radiation. A.electromagnetic B.kinetic C.thermal D.solar I think it is A...?
Monday, April 8, 2013 at 12:21pm

Science
What is the mass of LiF in 100.0mL of 0.10M solution?
Monday, April 8, 2013 at 12:16pm

Science
Most organisms reproduce: A. Sexual B. asexual C. By meiosis Is it b not sure between b and a
Monday, April 8, 2013 at 12:09pm

Science
A device that can be used both for cooling and heating is a _____. heat engine compressor heat pump vaporizer I think it is Heat pump..?
Monday, April 8, 2013 at 12:08pm

Science
Most microrganisms reproduce: A. Sexually B. asexually C. By meiosis A or B not sure
Monday, April 8, 2013 at 10:33am

science
1. _____ is the chemical reaction in cells that needs oxygen to release energy and produces carbon dioxide and water as waste. (1 point) Breathing Exhaling Inhaling Respiration 2. Lungs are masses of _____, grapelike clusters of tiny sacs that are surrounded by _____, where ...
Monday, April 8, 2013 at 12:22am

science
dr. halite combined sodium metal with chlorine gas to make sodium chlorine (table salt). The chemical reaction used up all of the metal and sll of the gas. If dr halite made 116 g of table salt and started with 68 g of chlorine gas, then how many grams of sodium metal did he ...
Sunday, April 7, 2013 at 11:33pm

LBCC
At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?
Sunday, April 7, 2013 at 11:06pm

physical science
two cars 200meters apart drive towards one another. If one car travels at 12 meters/s and the other at 26 meters/s how long does it take for them to collide?
Sunday, April 7, 2013 at 10:45pm

Science
A newspaper story on AIDS reports that an allele (R) confers complete resistance to HIV when homozygous and that 1% of the human population is resistant (RR). The story also states that 20% of the population carries one copy of the resistance allele (i.e., is heterozygous). Is...
Sunday, April 7, 2013 at 9:39pm

Science
what should you consider when you plan a title for a graph?
Sunday, April 7, 2013 at 6:02pm

Science
A Family travels 200 km in two hours and 20 min .then they stop to eat lunch.After lunch they travel 300 km In Two 3 Hours and 40min.What is the average speed during the entire trip?
Sunday, April 7, 2013 at 5:53pm

science asap
Air pressure decreases as altitude increases ^ which one goes on the horizontal axis and which one goes vertical axis? how did you choose this scale? (This is for a line graph)
Sunday, April 7, 2013 at 4:18pm

science
energy produced from atomic reactions is called ________
Sunday, April 7, 2013 at 2:17pm

science
Cal the index of refraction for a medium in which the speed of light is 2.012*10^8 meter per seconds
Sunday, April 7, 2013 at 2:17pm

Science
Phenylketonuria (PKU) is a human metabolic disease caused by the recessive allele k. If 2 heterozygous carriers of the allele marry and plan a family of five children: a) what is the chance that all their children will be unaffected? b) what is the chance that four children ...
Sunday, April 7, 2013 at 2:05pm

Science
The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following reaction Sn (s) + 2Cl2(g) --> SnCl4(l).Sn(s) + Cl2(g) --> Sn Cl2(l) DH = -186.2 kJSnCl2(s) + Cl2(g) --> SnCl4(l) DH = -325.1 kJWhat is the ...
Sunday, April 7, 2013 at 12:32pm

science
A train accelerates uniformly in a straight line at 0.3m/s from from rest. Calculate the velocity 15 seconds after its depature. Calculate the time taken to reach 30km/h and the distance covered by the train.
Sunday, April 7, 2013 at 8:46am

physical science
A builder pushes a wheelbarrow loaded with sand ,from rest at point A,up a ramp of unknown length ,which is inclined at unknown angle ,vertical height of unknown 2,75m
Sunday, April 7, 2013 at 8:05am

science
u have 2 cars moving at the same mass and speed collide and stick together what is the momentum? a. twice the original b. half the original c. the same as the original d. 10 times the original
Saturday, April 6, 2013 at 9:53pm

History,maths literacy,english,life orientation,life science and geography
Can i be a tourism and how much money does tourist make
Saturday, April 6, 2013 at 4:15pm

Science (MYOGLOBIN)
Does anyone know the coenzyme found in myoglobin
Saturday, April 6, 2013 at 4:00pm

science
A solution of NaOH(molar mass 40g mol-1)is prepared by dissolving 1.6g of NaOH in 500 cm cube of water.Calculate molarity(M) of the solution
Saturday, April 6, 2013 at 7:52am

physical science
Plan,design and conduct investigation to find out whether the amount of gas produced will depend on the increase on the concentration of HCl when it reacts with an excess Zn
Saturday, April 6, 2013 at 5:15am

science
What may be some long-term effects of human interactions with the oceanic environments?
Friday, April 5, 2013 at 11:03pm

science
What are the large- and small- scale causes of climate and weather?
Friday, April 5, 2013 at 9:58pm

Science
How do the oceans support life? How have the oceans and their marine life changed through time?
Friday, April 5, 2013 at 9:29pm

science
how might the shape of the hairlike structures relate to their function? Thanks.
Friday, April 5, 2013 at 8:18pm

Science
What do the hairlike structures on a cell do? Please don't give me a link to another website. Thank you!
Friday, April 5, 2013 at 8:01pm

Science
What are the responsibilities of humans toward natural resources? Describe three of the environmental challenges humans face today.
Friday, April 5, 2013 at 7:29pm

Science
Describe the geomorphic processes that shape the Earth’s surface. Use the Yosemite Valley to explain one or more of those processes.
Friday, April 5, 2013 at 7:03pm

World Geography
REVIEW 1.An area in which a single culture or cultural trait is dominant is called a ____________. A. culture B. cultural landscape <<<<<<<, C. norm D. culture region 2.Cultures often develop along with science and ____________. A. tools <<<<&...
Friday, April 5, 2013 at 3:27pm

computer
the meanings of this QBASIC WORD • FOR- • DO - • SELECT- • MID$- • ASC- • SQR- • LEN- • LEFT$- • TIME$- • INT-
Friday, April 5, 2013 at 1:18pm

computer
create a QBASIC program using DO WHILE LOOP
Friday, April 5, 2013 at 1:09pm

science
Calculate the work done by lifting a stack of books 0.5 m onto a table. The force you exerted eas 150N. Please help I am lost as how to do this
Friday, April 5, 2013 at 1:01pm

computer science
draw a level 0 diagram as well as a context diagram for the following scenario When renting a car from Banz Car Rental Agency, persons renting a car from the agency will be given a brochure of the type of vehicle, insurance on vehicle and the rental conditions of the vehicle, ...
Friday, April 5, 2013 at 10:58am

building science
how do we calculate the equilibrant if the upward force is 450N and the downward force is 750N acting on the same line?
Friday, April 5, 2013 at 2:13am

physics
Three different forces produce the same displacement: the vector Delta(r) starts at the left edge of your computer monitor and the tip points to the right edge of your monitor in a horizontal orientation. The first force has a magnitude of 10 N and it is pointing straight up, ...
Thursday, April 4, 2013 at 10:54pm

science computer
accept input age, height and weight for some people. The loop will stop when the user enters value 0 for age. Calculate average for age, height and weight, and print the number of people and average age, height and weight.
Thursday, April 4, 2013 at 10:28pm

Science
How does heart rate increase? Does it double? Does it increase with the intensity of the workout? I already know the background of heart rate but have trouble with the questions above.
Thursday, April 4, 2013 at 9:35pm

7th Grade Language Arts
The word simulation originally refers to the act of imitating. What meaning of the word is used in this excerpt from "What Makes Teens Tick?" "In an experiment using a driving-simulation game, he studied teens and adults as they decided whether to run a yellow ...
Thursday, April 4, 2013 at 9:01pm

Math
There Is 3/4 Of Class 218 Going To Art And 1/8 Going To Gym. The Rest Of The Class Is Going To Computer Class. What Fraction Of The Class Is Going To Computers ?
Thursday, April 4, 2013 at 6:43pm

science
A ________ biome is a cold, dry area where the sun barely rises during the winter. a. coniferous forest b. temperate deciduous forest c. grassland d. tundra this is a 7th grade question and can a science teacher help me out on this please so i can study for a make up test ...
Thursday, April 4, 2013 at 6:03pm

science
what are the answers to the ecosystems packet for 7th grade in science? I need the answers asap because i need to finish getting all of the answers to the packet so i can study it tonight because i need to make up the test to that packet and it is because the day my teacher ...
Thursday, April 4, 2013 at 5:35pm

chemistry/science
What are the groups of atoms inside iron called?
Thursday, April 4, 2013 at 4:46pm

science
if aluminum has the density of 2.7g what would the mass be?
Thursday, April 4, 2013 at 3:35pm

science
Does a rollercoaster have its greatest GPE at the top of the tallest hill or the bottom of the lowest dip?
Thursday, April 4, 2013 at 2:35pm

science
Convert 32 newton-meters to Joules. Please help!
Thursday, April 4, 2013 at 1:45pm

science
Pls how can I carry out qualitative analysis on iron 11 ammonium sulphate hexahydrate (NH4)2SO4.FeSO4.6H2O in a secondary school laboratory?
Thursday, April 4, 2013 at 12:25am

Science
A jet aircraft is traveling at Mach 2.5 through air at 1 °C. What is the jet's speed in m/sec? I can do the equation myself, I just need to know what equation I need to do in order to find the answer.
Wednesday, April 3, 2013 at 10:42pm

Computer Literacy
A strong search strategy for a search engine would include which of the following?
Wednesday, April 3, 2013 at 10:10pm

ON SCIENCE!!
How many pairs of homologous chromosomes would be in an offspring? Please give me an answer not a link to another website. Thanks.
Wednesday, April 3, 2013 at 9:29pm

science
going 80 km/h how far can you travel in 30 minutes?
Wednesday, April 3, 2013 at 8:02pm

Science
Why does changing the shape of an object have no effect on the density of that object? Because it's still the same item all you did is change how it looks. The mass and matter stays in the object. Is this correct
Wednesday, April 3, 2013 at 7:09pm

Science
Define mass How much something weighs Define volume The amount of space in something Define density and show the formula for calculating density The amount of mass or matter in an object D=M/V
Wednesday, April 3, 2013 at 6:53pm

college algebra
At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and the total cost function is given C(x)=8x+16, where x represents the number of boxes of computer chip produced. A. Find the profit function in P(x)=R(x...
Wednesday, April 3, 2013 at 3:13pm

science
A 15.67gsample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate to drive off water. The mass was reduce to 7.58g. What is the formula of the hydrated?
Wednesday, April 3, 2013 at 6:12am

science
a 20 meter flag staff casts a shadow of 12 meter.what is angle of sunrays to the tree
Wednesday, April 3, 2013 at 4:11am

science
can you simply explain what happens to ice that breaks off a glacier that lands in the water
Tuesday, April 2, 2013 at 11:54pm

science
if a ball that has a density of 1.17 g cm3 placed in the beaker, where will the ball come to rest
Tuesday, April 2, 2013 at 11:38pm

Science
How many grams of CaCl2 are required to prepare 2.00 liters of 7.00 M CaCl2?
Tuesday, April 2, 2013 at 11:11pm

Math
1.During the last 5 shifts, Gary delivered 9,8,14,17, and 12 pizzas. What is the mean number of pizzas delivered during a shift? 12 2.Stephie's science experiment produced the following results:183,204,179,191,186.What is the range? 26 3.What is the mode of the city league...
Tuesday, April 2, 2013 at 6:28pm

Earth science
Earth’s troposphere, hydrosphere, and lithosphere contain relatively large amounts of which element?
Tuesday, April 2, 2013 at 6:02pm

Earth science
Waste produced by people along the East Coast of the United States has been dumped into the Atlantic Ocean where it is distributed by surface ocean currents. Which coastal area is most likely to become polluted by this waste?
Tuesday, April 2, 2013 at 5:55pm

Science
Abiotic means non living Biotic means living The following list is to enter into a Venn Diagram where the circles are labeled Abiotic and biotic whale is biotic clock is abiotic water is abiotic fish is biotic paper is both glass is abiotic aluminum is abiotic wooden ruler is ...
Tuesday, April 2, 2013 at 5:34pm

Math
A computer technician keeps track of his earnings throughout each month. the technician observes that his earnings are a linear function of the number of hours he works during the month. The technician finds that when he works 55 hours during the month, he earn $2,125 and when...
Tuesday, April 2, 2013 at 5:30pm

SCIENCE/ECOLOGY
I NEED HELP IN PREPARING A DEMOPRAPHIC AND ENVIRONMENTAL TIMELINE WHICH INCLUDES DEATH RATES, BIRTH RATES, POPULATION CHANGES, AND MAJOR HISTORY CHANGES
Tuesday, April 2, 2013 at 4:00pm

science
Calculate the de Broglie wavelength of a 0.44 kg ball moving with a constant velocity of 26 m/s (about 60 mi/h).
Tuesday, April 2, 2013 at 3:31pm

science "Genetics" Mendel
You are studying genetics in domestic chickens (Gallus gallus) and you find a mutant with no wings. Assume that the mutant wingless phenotype is due to a mutation at a single gene. In contrast to mammals, chickens use ZZ/ZW sex-linkage. That is, male chickens have two copies ...
Tuesday, April 2, 2013 at 9:11am

physical science 2nd semester
what is the reactant in this equation ?2HBr(aq)+ca(OH)2(aq)-->2H2O(i)+CaBr2(aq)
Tuesday, April 2, 2013 at 12:09am

Science ASAP
1. Angiosperms have organs such as ______________ and produce seeds. The are described as _________________plants. (1 point) flowers; vascular stems; pollinated rhizoids; vascular leaves; non-vascular 4. Of the following, which is NOT a characteristic of vascular plants? (1 ...
Monday, April 1, 2013 at 9:07pm

science
What are 4 examples of physical systems designed by people?
Monday, April 1, 2013 at 8:57pm

science help ASAP please
1. Angiosperms have organs such as ______________ and produce seeds. The are described as _________________plants. (1 point) flowers; vascular stems; pollinated rhizoids; vascular leaves; non-vascular 4. Of the following, which is NOT a characteristic of vascular plants? (1 ...
Monday, April 1, 2013 at 8:22pm

Science
Okay, I need help with balancing equations. It's so frustrating for a 7th grader! -_- My problem is: _Na3PO4 + _KOH = NaOH + _K3PO4
Monday, April 1, 2013 at 5:36pm

science
If a scale model of the planets are built with Earth's diameter set to 10 centimeters, how big would the model of Jupiter have to be in centimeters?
Monday, April 1, 2013 at 5:18pm

science need help
2 H2 + O2 = 2H2O 2 grams + 32 grams=_ _ _ _ _grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogeb that reacts. in your response be sure to: include they type of change illustrated in the balanced eqaution explain the conservation ...
Monday, April 1, 2013 at 11:15am

Math-Help
A computer technician keeps track of his earnings throughout each month. the technician observes that his earnings are a linear function of the number of hours he works during the month. The technician finds that when he works 55 hours during the month, he earn $2,125 and when...
Monday, April 1, 2013 at 10:27am

Science Physics
An object weighs 12 N on earth. When it is brought to Mars, it has a weight of 4.8 N. What is the acceleration due to gravity on Mars? (Taking the acceleration due to gravity on earth is 10 m/s²)
Monday, April 1, 2013 at 10:17am

science need help
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
Monday, April 1, 2013 at 9:54am

Science Check Answer
5. Acceleration is a change in position and speed. True or false I think False
Sunday, March 31, 2013 at 9:41pm

SCIENCE 8R - HELP!
...G.....g G..GG...Gg g..Gg...gg G - Blue g - Black G - Dominant g - recessive Homozygous - ????????? Heterozygous - ??????? Please help ..... I need to find the percentage of Homozygous and Heterozygous and find which on is Homozygous and Heterozygous! (I have to make up a ...
Sunday, March 31, 2013 at 5:21pm

computer programming
I need help with this problem please: Create the logic for a program that accepts input values for the projected cost of a vacation and the number of month until vacation. Pass both values to a method that displays the amount you must save per month to achieve your goal. Use ...
Sunday, March 31, 2013 at 4:54pm

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
Sunday, March 31, 2013 at 4:37pm

science
when 1 gram of water evaporated the volume of the water vapor increases but the mass remains constant. why does the water remain constant i think because the number of atoms remain constant
Sunday, March 31, 2013 at 1:21pm

science
why the tilt of axis causes summer to be warmer than winter in the northern hemisphere i put because the rays of the sun strike the northern hemisphere more directly in the summer. but it could also be because northern hemisphere is closer to the sun in the summer.
Sunday, March 31, 2013 at 12:43pm

Gr 10 science
I can't find a picture to build a model of calcium sulphate using styrofoam ball pls help
Sunday, March 31, 2013 at 12:25pm

science
reasons for the increase or dissipation of hurricane strength
Sunday, March 31, 2013 at 11:02am

electronic,physical,science
A circuit that combines two or more signals is called a mixer. In this lab, your goal is to build a mixer that combines the signals generated by two voltage sources, V1 and V2, where: V1 is a 1 kHz square wave that varies between 0V and +1V, and V2 is a 5 kHz sine wave that ...
Saturday, March 30, 2013 at 10:58pm

science
1. genetic _______ (1 point) 2. are formed by _________ (1 point) 3. can be changed by natural ___________ (1 point) 4. can be changed by _________ (1 point) 5. can be changed by selective ____________ (1 point) 6. which leads to _____________ (1 point) PLEASE HELP!!!
Saturday, March 30, 2013 at 4:40pm

Science
What pumps blood
Saturday, March 30, 2013 at 10:22am

Intro to Logic
10. A strongly supported claim in science should be regarded as
Saturday, March 30, 2013 at 6:54am

Science
A tin can is filled with water to a depth of 37 cm. A hole 11 cm above the bottom of the can produces a stream of water that is directed at an angle of 32 degrees above the horizontal. Find the range of this stream of water. x=? Find the maximum height of this stream of water...
Friday, March 29, 2013 at 11:52pm

language arts Ms. Sue please
5. Which of the following sentences is punctuated correctly? (1 point) I'd like to go outside but I need to finish my homework first. Since Bobby's birthday is in July he isn't able to celebrate with his classmates. Even if I have to do it myself I will fix the gym...
Friday, March 29, 2013 at 7:06pm

science
a guitar string is 75cm long,calculate the wavelength of its fundamental note
Friday, March 29, 2013 at 4:52pm

Science check answer
1. Acceleration involves a change in ____. speed velocity displacement direction I think its b.
Friday, March 29, 2013 at 4:02pm

Science Plz help
1. Acceleration involves a change in ____. speed velocity displacement direction 2. Which of the following statements about acceleration is true? Like velocity, acceleration has a direction. Your acceleration is positive when you speed up. Your acceleration is negative when ...
Friday, March 29, 2013 at 1:42pm

science
1mole of liquid water at 25 c and 1 atm forms 1 mole of steam at 100 c and 1 atm. the molar heat capacity of water 373 k is 40.79kj/mol and the molar heat capacity of water is 75.3 J. assume ideal gas behavior for steam. Calculate delta U, delta H and delta S
Friday, March 29, 2013 at 10:21am

science
science is very important for us because what
Friday, March 29, 2013 at 9:35am

Science
Explain why .100 m NaCl in water does not have a freezing point equal to a) -0.183 degrees Celsius b) -0.366 degrees Celsius
Thursday, March 28, 2013 at 7:07pm

Science Grade 8
Siberian tigers originated in the far northern continent of Asia. The climate is extremely cold, since much of the land is within the Artic Circle. They were forced south over time and now reside in Southeast Asia, such as India, Thailand and Cambodia. They still have thick ...
Thursday, March 28, 2013 at 6:22pm

Statistics
DM Co. sells computer parts by mail. The company claims that at least 90% of all orders are delivered on time. A sample of 150 orders showed that 129 were mailed on time. Is the company’s claim true? Test using the 2.5% level of significance. Use the 5 step procedure.
Thursday, March 28, 2013 at 6:15pm

science
can you describe the process of cellular respiration.include the words:sugar,energy,carbon dioxide,and water
Thursday, March 28, 2013 at 4:42pm

science
1. For the three cubes shown below, determine their surface area, volume and surface area to volume ratio. Then, circle the one you believe would be the most efficient and write a summary stating why.
Thursday, March 28, 2013 at 11:30am

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