Homework Help: Science

Branches of Science

Recent Homework Questions About Science

English 12
Question 1 of 20 5.0 Points Critical Reading Identify the letter of the choice that best completes the statement or answers the question. What is Mr. Gradgrind’s opinion of horse riders? A. He does not approve of them. B. He is fascinated with them. C. He believes they ...
Tuesday, April 17, 2012 at 9:33am

engineering science
a bale of weight 200 newtons hanged at the end of a rope.find the acceleration of the bale if the tension in the rope is 200 newtons,150 newtons,300 newtons.
Tuesday, April 17, 2012 at 5:23am

science
Does adding boiled, deionized water to the titrating flask to wash the wall of the erlenmeyer flask and the buret tip increase, decrease, or have no effect on the Ksp value of the Ca(OH)2?
Tuesday, April 17, 2012 at 5:00am

science
what is matter?
Tuesday, April 17, 2012 at 1:10am

Science
What does the A stand for in LBA plates?
Tuesday, April 17, 2012 at 1:00am

to ms.sue
this is what i flunked. SCIENCE for magnets and electricity!
Monday, April 16, 2012 at 5:42pm

Health Science
Implementation of informatics has shown to be effective in many areas of health care. Perform a brief literature review and discuss one area that has shown significant savings in the operating budget.
Monday, April 16, 2012 at 1:54pm

science
How many moles are in a 12.0 g sample of iron (II) oxide
Monday, April 16, 2012 at 11:10am

science
what is buffer (ing) solution and its application with one example? and buffer system in blood?
Monday, April 16, 2012 at 9:35am

engineering science
The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is its image?
Monday, April 16, 2012 at 4:56am

Science
Why are space telescopes able to make better observations in the ultraviolet and infrared ranges than ground-based telescopes? A)space telescopes are closer to the objects that they are observing B) the atmosphere absorbs or reflects much of the UV and IR radiation C) space ...
Sunday, April 15, 2012 at 7:17pm

Earth/Space Science
Earth's axis tilts at an angle of 23.5 degrees relative to its orbit. Analyze the climate conditions that would exist at the poles and the equator if the axis were parallel to the orbit.
Sunday, April 15, 2012 at 6:43pm

science
A 1.4 kg ball and a 3.0 kg ball are connected by a 1.0 m long rigid, massless rod. The rod is rotating cw about its center of mass at 24 rpm. What torque will bring the balls to a halt in 4.2 s?
Sunday, April 15, 2012 at 4:45pm

Environmental Science
7. Which of the following terms is used to describe a linear sequence in which energy is transferred from one organism to the next as each organism eats another organism? a. trophic level b. food web c. energy pyramid d. food chain D 10. Which of the following is an example of...
Sunday, April 15, 2012 at 4:29pm

Physics Question
Pulsed lasers used in science and medicine produce very short bursts of electromagnetic energy. If the laser light wavelength is 1062 nm (this corresponds to a Neodymium-YAG laser), and the pulse lasts for 40 picoseconds, and 1.1 x 104 wavelenghs are found in the laser pulse, ...
Sunday, April 15, 2012 at 7:06am

Science
What is the boiling point of ethanol when the atmospheric pressure is 60kPa? I decided to repost this ? under Science instead of Chemistry. Thanks.
Saturday, April 14, 2012 at 10:00pm

Science
Calculate the acceleration of a turtle whose speed changes from 3 m/s to 72 m/s over a period of 17 seconds.
Saturday, April 14, 2012 at 7:21pm

Science - physics
A circular wire of radius R carries a total charge Q distributed uniformly over its circumference. A small length of wire subtending angle teta at the centre is cut off. Find the electric field at the centre due to the remaining portion
Saturday, April 14, 2012 at 4:23am

science
a box is dropped off a tall building. At what time after release is it falling 15 m/s?
Friday, April 13, 2012 at 11:35pm

Science
I need 3 examples of mechanical waves. I have seismic, and ocean waves. Are their any other examples besides these and sound waves?
Friday, April 13, 2012 at 6:39pm

Science
The object distance for a convex lens is 15.0 cm, and the image distance is 5.0 cm. The height of the object is 9.0 cm. What is the height of the image?
Friday, April 13, 2012 at 2:28pm

Physics
Physics Report! What should i write..please help me need ideas !best answer!? Well First my report should be focused on Circular Motion OR Energy and momentum All the report says is to spend a day or two analysing the world around you in terms of Linear Motion / Newton's ...
Friday, April 13, 2012 at 4:12am

science
What is the meaning of calibration?
Friday, April 13, 2012 at 3:55am

Science
What pressure is exerted by 0.010 mol of methane gas if it is volume is 0.26 L at 373°K?
Friday, April 13, 2012 at 1:13am

science
Most of us are aware of the energy concerns of today and the future. There are many pros and cons to the energy sources we currently use. For this forum choose one of the following to discuss: If you had to argue the benefits of nuclear energy, what would they be? What are the...
Friday, April 13, 2012 at 12:41am

physical science 101
find the mass of water in a bath tub whose interior is 1.300m long and 0.600m wide and that is filled to height of 0.3000m (hint: the density of water =1000kg/m^3)
Thursday, April 12, 2012 at 10:20pm

Science
Bobbie is playing with his radio-controlled car by using a handheld remote box. What type of energy is being used to power Bobbie's car? a)chemical energy b)electrical energy c)heat energy d)mechanical energy THANKS!!!!!
Thursday, April 12, 2012 at 8:58pm

Science
Amber visits a theme park that has a roller coaster that travels upside down. Which of the following is the best explanation for why the roller coaster car stays in contact with the track when it travels upside down? A)The track and car are held together by a series of strong ...
Thursday, April 12, 2012 at 8:49pm

physical science
A disturbance sends ripples across water in a tub. These ripples are an example of a? rarefaction longitude wave compression surface wave (my choice) Sound is an example of what kind of wave? transverse wave longitude wave surface wave wavelength (my choice) Waves carry -- ...
Thursday, April 12, 2012 at 8:22pm

science
what is the word itvbarnoeso unscrambled?
Thursday, April 12, 2012 at 6:49pm

Physical Science
A hockey puck moving at 28 m/s is caught by an 80.00 kg man who was at rest. The man and puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity?
Thursday, April 12, 2012 at 3:47pm

Science
A boat is moving east at 50 km/ hr on a river that is going west at 7 km/hr. What is the velocity of the boat.
Thursday, April 12, 2012 at 9:44am

physical science
Sarah lifts a 345 g shopping bag a distance of 1.2 meters onto a shelf. How much work was done?
Thursday, April 12, 2012 at 8:33am

Physics
I want a best project for science fair plz tell me
Thursday, April 12, 2012 at 6:54am

Reasearch or Term paper ideas
I am doing my bachelors in forensic science semester two... I would like to know any common topics one may write over 30pages for a research or term paper in regard with forensic science. i tried body language and anti-social behaviour, though this topic does not really suit ...
Thursday, April 12, 2012 at 4:54am

math
i try and try to practice for my checkpoints but i keep on failing in them!!!!!!!!!!! what can i do to improve in maths,science and english. please help me practice. I was hoping you could give me the real checkpoint papers for all subjects!! thatcwould be amazing then i'...
Thursday, April 12, 2012 at 4:18am

Science
How were Mendel's ideas different from others at the time?
Thursday, April 12, 2012 at 12:56am

Environmental Science
23. During the period of human history known as the ____, human populations grew rapidly because of advances in farming methods. a. Industrial Revolution b. "Tragedy of the Commons" c. agricultural revolution d. hunter-gatherer period C? But it could also be A 25. ...
Wednesday, April 11, 2012 at 6:35pm

Science
A weight lifter lifts a barbell from the ground, raises it at a constat velocity and holds it motionless over his head. How does the force of the lifter compare with the wieght of the barbell at different stages of the lift?
Wednesday, April 11, 2012 at 5:24pm

Science - Physics
Some helium at 20.0psi gauge pressure occupies 40.0ft^3. find its volume at 32.4 psi if the temperature remains constant.
Wednesday, April 11, 2012 at 1:35pm

science
2. An electric fan having a radius of 0.5 m is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 83.8 rad/s in 17.5 s. the deceleration is 42.0 rad/s2. Determine a) The initial angular speed of the fan b) the linear speed of a point on...
Wednesday, April 11, 2012 at 1:32pm

sCIENCE PLZZZZZZZZ HELP
1. The surface tension in a cup of water is caused by ____. (1 point)attractive forces between the water and its container attractive forces between water molecules adhesive forces between water molecules adhesive forces between the water and its container 2. The measure of ...
Wednesday, April 11, 2012 at 12:04pm

Science
1. The surface tension in a cup of water is caused by ____. (1 point)attractive forces between the water and its container attractive forces between water molecules adhesive forces between water molecules adhesive forces between the water and its container 2. The measure of ...
Wednesday, April 11, 2012 at 11:29am

enviromental science
what are the two causes of density in deep current waters.
Wednesday, April 11, 2012 at 8:48am

SCIENCE
describe the preparation of 100mls of 1,0M from concentrated HCL?
Wednesday, April 11, 2012 at 4:06am

Science
what are two things that you must know to determine speed?
Tuesday, April 10, 2012 at 10:18pm

Science
an object will sink with a density of what?
Tuesday, April 10, 2012 at 10:00pm

Computer Science
I am making a object oriented program and hashing the list of make of an electronic and type to the JCombobox...i am getting this number Exception error...it will nice if you could tell why am i getting it eventhough i am doing the casting and everything. Try to help ASAP! ...
Tuesday, April 10, 2012 at 9:59pm

Science
Which answer best describes the purpose of the muscles in the human body? A)to protect tissues and form blood B)to remove and use nutrients from food C)to produce movement and provide support D)to combine blood and oxygen needed for movement
Tuesday, April 10, 2012 at 9:15pm

Ms, Sue help me in science
1. As a sample of matter is cooled, which property of its particles increases? (1 point)average kinetic energy pressure buoyancy cohesive forces 2. Kinetic energy is the _____ of motion. (1 point)temperature energy heat state 3. Substances that have a low _____, such as most ...
Tuesday, April 10, 2012 at 8:24pm

science
1. As a sample of matter is cooled, which property of its particles increases? (1 point)average kinetic energy pressure buoyancy cohesive forces 2. Kinetic energy is the _____ of motion. (1 point)temperature energy heat state 3. Substances that have a low _____, such as most ...
Tuesday, April 10, 2012 at 7:16pm

science
a 40kg student goes to jupiter where the rate of acceleration is 24.5m/s squared what is the students weight on jupiter?
Tuesday, April 10, 2012 at 4:42pm

Science (Chemistry)
Islands in the middle of the oceans (for example, Great Britain, Hawaii, Bermuda) tend to have more stable climates with smaller temperature fluctuations than regions of the same mass surrounded by land (for example, continents). Explain these facts by referring to heat energy...
Tuesday, April 10, 2012 at 4:22pm

science
1. The surface tension in a cup of water is caused by _____. (1 point)attractive forces between the water and its container attractive forces between water molecules adhesive forces between water molecules adhesive forces between the water and its container 2. Which of these ...
Tuesday, April 10, 2012 at 3:33pm

science
can you save money on your electric bill from a regular electric company by choosing to use a percentage of wind power through them? Or does it make your bill higher?
Tuesday, April 10, 2012 at 4:08am

Science
Demarcus wants his friend, Alvin, to guess which planet he is describing. He tells Alvin that the planet is rocky and doesn't have any moons. What other clue would let Alvin be certain which planet Demarcus is describing? A)It has rings around it. B)It is very hot in ...
Monday, April 9, 2012 at 9:08pm

Science
How can rural people benefit from gravitational acceleration
Monday, April 9, 2012 at 8:20pm

Science
Which of the following is not a variable in an investigation designed "how much light is needed for a spider plant to grow?" A.type of plant B.amount of water C.source of light D.amount of light B? Which of the following is the best investigation question? A.Do ...
Monday, April 9, 2012 at 7:49pm

Science
How can rural people benefit from gravitational acceleration
Monday, April 9, 2012 at 7:45pm

science
a wolf is chasing a rabbit. Use the following data to graph the wolf's motion 15 m/s at 0s, 10 m/s at 1s, 5 m/s at 2s, 2.5 m/s at 3s, 1 m/s at 2s, 2.5 m/s at 3s, 1 m/s at 4s, and 0 m/s at 5 s. What does the graph tell you?
Monday, April 9, 2012 at 6:08pm

environmental; science
describe three or more of the six major ways in which humans use land.
Monday, April 9, 2012 at 4:41pm

science
a 150g of a metal at 80degree C is placed in 100cm3 of pure water at 20degree C. the final temperature of the system (metal+water) is 23degree C. what is the specific heat of the metal? i got the ans -0.16 by using formula mCdelta T(water)=mCdeltaT(metal) but i am not sure if ...
Monday, April 9, 2012 at 4:20pm

Science
How many conformations does monosodium glutamate (MSG) have and why?
Monday, April 9, 2012 at 10:38am

Science
A spacecraft of mass 500kg lands on the moon. Calculate the moon's gravitational pull on it given that mass of the moon is 7.5 x 10^22kg and radius of the moon is 1.6 x 10^6m.
Monday, April 9, 2012 at 4:26am

Science
25 cm of 1.0 mol dm− NaOH is added to 25 cm of 1.0 mol dm− HCl. The temperature rise is 6¢XC. Which reactants will also give a temperature rise of 6¢XC? A. 25 cm of 2.0 mol dm− NaOH and 25 cm of 2.0 mol dm− HCl. B. 50 cm of 1.0 mol dm− ...
Monday, April 9, 2012 at 2:47am

Science
I need help in Science Project. The topic is called "How does the size affect the force of magnetism". I didn't see any procedure in how to do this particular topic can you help me?
Sunday, April 8, 2012 at 9:43pm

Science 4th Grade
Bats and dolphins both hear a ______ than humans do... a.smaller range of pitches b.smaller range of frequencies c.larger range of resonances d.larger range of pitches and frequencies
Sunday, April 8, 2012 at 9:33pm

physical science
What is the Ratio for Al2(CrO4)3
Sunday, April 8, 2012 at 8:49pm

Science
There are two objects of the same size.However, one object is made of wood, and the other object is made of plastic. Which of the following properties of the objects will be the same? A)mass B)texture C)volume D)weight Thanks!!!
Sunday, April 8, 2012 at 7:56pm

Science
Janice found two sea shells when she went to the beach. They appear to be almost the same size, but they have different shapes. How could she figure out if their volume is the same? A)Weigh each one on a scale to see which is heaviest. B)Fill each one with water to see which ...
Sunday, April 8, 2012 at 7:51pm

science
bob and sue are initially standing still on frictionless ice. bob weighs 500n . they push against each other and sue acquires an acceleration of 5m/s while bob acquires acceleration of 3m/s. what is sue mass
Sunday, April 8, 2012 at 6:38pm

science
A ball of mass m is attached by two strings to a vertical rod. as shown above. The entire system rotates at constant angular velocity about the axis of the rod. a)Assuming is large enough to keep both strings taut, find the force each string exerts on the ball in terms of , m...
Sunday, April 8, 2012 at 2:53pm

science
Rank the species from strongest to weakest base: Cl-, OH-,NH2
Sunday, April 8, 2012 at 12:50pm

science
If 1.5 gals of 70 degree water is mixed with .25 gals of 32 degree water what would the temprature be?
Sunday, April 8, 2012 at 10:30am

Physical Science
I need some help. I have tried working this problem and can't get it. What is the mass of the Sun, in kilograms, based on the revolution period and distance from Venus?
Sunday, April 8, 2012 at 2:27am

Physical Science
I need some help. I have tried working this problem and can't get it. A class is building a scale model of the planets based on the model of Mercury having a radius 0.5cm. What is the diameter of Saturn for this model?
Sunday, April 8, 2012 at 2:26am

Physical Science
I need some help. I have tried working this problem and can't get it. A scale model of the solar system is being constructed where 40cm of the model represents 0.5 AU of actual distance. What is the model dimension, in meters, for the distance of Jupiter from the sun?
Sunday, April 8, 2012 at 2:22am

science-anatomy
How is static equilibrium accomplished? How is dynamic equilibium accomplished?
Saturday, April 7, 2012 at 6:16pm

science
How does colorvision and night vision function?
Saturday, April 7, 2012 at 6:15pm

science..
What is the range of olfaction and taste? What is the threshold of olfaction and tast?
Saturday, April 7, 2012 at 6:14pm

Science
green house effect influences the temperature on Earth because try not to give a link
Saturday, April 7, 2012 at 12:51pm

Science
What would be John Endler's relationship towards natural selection? Help!
Saturday, April 7, 2012 at 10:09am

Science
I need a hypothesis on: How does the green house effect influence temperature on Earth? Can you plz not give a link that doesn't help much
Friday, April 6, 2012 at 6:39pm

science
How do quarks differ from other elementary particles?
Friday, April 6, 2012 at 3:47pm

earth science
what radioactive isotope would be most useful in dating a mastodont bone ?why?
Friday, April 6, 2012 at 12:11pm

science
how do u draw a detailed particle diagram showing chemical and physical changes in rocks? I actaully found the sheet on the internet whille reseaching the answer. I typed in the question and there was the sheet first one as well!!!!
Friday, April 6, 2012 at 6:46am

Science
If the distance from the moon to the Earth decrease from 230,000 miles (which it is today) to 20,000 miles, what affect would this have on the tides?
Friday, April 6, 2012 at 3:40am

science
The global water cycle provides renewable water, but a number of factors affect how much freshwater is available for human consumption. Describe these factors and circumstances. When do human interventions in water availability pose serious problems to freshwater accessibility?
Thursday, April 5, 2012 at 11:06pm

Science
Identify 5 different materials that you encounter or use on a daily basis, and identify a mineral that is mined to supply each of those materials.
Thursday, April 5, 2012 at 4:30pm

science
a solution is 40% in NAOH. calculate the mole fraction of NAOH if it is an aqoues solution
Thursday, April 5, 2012 at 10:47am

physical science
The primary voltage is still 120 V and the number of primary turns = 60, but now the power in the primary side is 3000 Watts and there is a 120 ohm resistor connected to the secondary. Find the current in the resistor, and the secondary voltage and # turns.
Wednesday, April 4, 2012 at 10:22pm

science
What is a joule second?(not per second)ie:planks constant. Why do s orbitals (l=0)have zero angular momentum?
Wednesday, April 4, 2012 at 9:51pm

science
A storm forms over the central part of the u.s. What direction will the storm move? A towards the north B towards the south C towards the west D towards the east
Wednesday, April 4, 2012 at 8:14pm

Science
Megan wants to determine if an electrical circuit has electricity flowing through it. Which of the following evidence is proof that the circuit has an electrical current? a)The circuit is a closed loop. b)A light bulb is lit in the circuit. c)The circuit's switch is in the...
Wednesday, April 4, 2012 at 8:07pm

Science
Heat flows in which direction? A)from solid objects to liquids B)from larger objects to smaller objects C)from warmer objects to cooler objects D)from more dense objects to less dense objects THANKS!
Wednesday, April 4, 2012 at 7:54pm

Science
If Maria wants to have the best chance of blowing out all of the birthday candles on her birthday cake, she should bend down close to the candles, take a deep breath, make a small opening with her lips and then push her breath out. Why does doing it this way work the best? A)...
Wednesday, April 4, 2012 at 7:30pm

Science
When people want to use water to create electricity they generally build a dam to hold the water back, creating a large lake behind the dam. Why is it necessary to hold the water back with a dam in order to produce electricity? A)It increases the amount of water available. B)...
Wednesday, April 4, 2012 at 7:23pm

Science
Alex threw a stick in a river and watched as the river carried it away. He scooped a pail of water from the river and noticed that a leaf was floating in the pail without moving on the surface of the water. Why did the stick move in the river and the leaf stay still in the ...
Wednesday, April 4, 2012 at 7:18pm

science 10
How much energy is released when 2.05 mol of water vapour at 100C condenses with no change in temperature?
Wednesday, April 4, 2012 at 7:11pm

computer science
Prove that the following language is not context free: L = {a^3^n : n >= 0}
Wednesday, April 4, 2012 at 6:11pm

Earth/Space Science
Cloud seeding, which causes rain by introducing condensation into a cloud, has been used to bring precipitation to areas experiencing drought. Analyze the benefits and risks of cloud seeding.
Wednesday, April 4, 2012 at 5:42pm

Science
Which of the foolowing occurs when a mass of air rises into the atmosphere? A) it becomes warmer because the particles move closer together B) it becomes cooler because the particles move closer together C) it becomes cooler because the particles move farther apart D) it ...
Wednesday, April 4, 2012 at 5:38pm

science
If I begin with 100 atoms, how many atoms will be left of carbon 12 in 17,190 yrs if the half life of C12 is 5,730 yrs?
Wednesday, April 4, 2012 at 4:59pm

science
how to calculate mass in physics
Wednesday, April 4, 2012 at 1:27pm

science
what are the characteristics of plants and animals
Tuesday, April 3, 2012 at 11:49pm

8th grade science
The densities of four different woods are shown below. Wood Sample Densities Type of wood: African Teakwood Density(g/cm3) 0.98 Type of wood: Balsa Density(g/cm3) 0.14 Type of wood: Cedar Density(g/cm3) 0.55 Type of wood: Ironwood Density(g/cm3) 1.23 Which wood will sink when ...
Tuesday, April 3, 2012 at 7:52pm

Physical Science
How much heat is needed to melt a sample of ice if the temperature of 150 g of water in the calorimeter is lowered from 23.0 C to 0 C?
Tuesday, April 3, 2012 at 1:36pm

science
A small mass attached to a spring oscillates with simple harmonic motion with amplitude of 70 mm, taking 13 seconds to make 40 complete oscillation. Calculate its angular frequency?
Tuesday, April 3, 2012 at 7:29am

science
Which statement correctly describes the Sun and earth?
Monday, April 2, 2012 at 9:53pm

Science
Think about the analogy "full of hot air." If a person were to inhale 2.2 L of gas at a temperature of 18 °C and that air heats to a temperature of 38 °C inside the lungs, what would be the new volume of the gas? Round to the nearest hundredth. Don't ...
Monday, April 2, 2012 at 9:42pm

Science 7R - The Human Body Prep Test
I have a test tommrrow on the The Human Body and I asked my science teacher if she can post a castle learning assignment about the Human Body (the day before the test she always post a caslte learning assignment for us to study and do well on the test the next day) and then ...
Monday, April 2, 2012 at 7:41pm

Science 7R
How do activites in the large intestine help maintain homoestatsis?
Monday, April 2, 2012 at 6:40pm

Science
What type of energy from the Sun do plants use to make their own food? A.Chemical Energy B.Sound Energy C.Light Energy D.Heat Energy C? An MP3 player uses the chemical energy in a battery to produce electricity energy. The electrical energy makes the player work.When turned on...
Monday, April 2, 2012 at 6:38pm

Earth/Space Science
How does damage to the ozone layer cause a threat to humans? A. It increases radiation of heat from Earth into space. B. It allows damaging infrared radiation to penetrate the atmosphere. C. It allows damaging ultraviolet radiation to penetrate the atmosphere. D. It increases ...
Monday, April 2, 2012 at 6:25pm

Science
Which of these energy changes takes place in a solar cell? A.Heat energy to light energy B.Light energy to electrical energy C.Electrical energy to heat energy D.Thermal energy to electrical energy C?
Monday, April 2, 2012 at 5:42pm

Science
Identify the sources of energy used to power a cell phone and other energies that it can transform into. I put Electrical Energy and it can be transformed to heat,sound,light,and mechanical energy.
Monday, April 2, 2012 at 5:40pm

Science
you are to make a buffer of pH = 4.33 using HNO2 and NaNO2 what ratio of NO2- to HNO2 is required?
Monday, April 2, 2012 at 5:25pm

Science
Molecules that make up matter move constantly.Which of these forms of energy refers to the energy of the moving molecules and why? A.Chemical Energy B.Thermal Energy C.Electrical Energy D.Light Energy Which device can change electrical energy to light and sound energy? A....
Monday, April 2, 2012 at 5:06pm

Physical Science
Distinguish between longitudinal and transverse waves. Do all waves fall into one or the other of these categories? If not, give an example of one that does not?
Monday, April 2, 2012 at 4:53pm

Science
Identify the sources of energy used to power the cell phone and other energies that it can transform into
Monday, April 2, 2012 at 4:50pm

Science
Which one of these is a form of stored energy? A. Heat energy B. Light energy C. Electrical energy D. Chemical Energy D?
Monday, April 2, 2012 at 4:26pm

psy
17. <11{6[1(07)71]}> The higher the price of an antique, the greater people’s expectation that the object is rare. That, in turn, makes the antique appear more valuable. If the statements above are correct, then offering an antique for sale at a bargain price (...
Monday, April 2, 2012 at 12:31pm

science
Mg metal is introduced in Hcl soluon.1.Write two half equations 2.Write overall equation
Monday, April 2, 2012 at 11:08am

science
Which of the following reactions can occur or not.explain Zn + 2H -> Zn + H2 Fe + 2Ag -> Fe + 2Ag Cu + Pb -> Cu + Pb
Monday, April 2, 2012 at 11:02am

Physical Science
what amount of energy in calories would it take to bring 20 grams of solid ice at negative twelve degrees celsius to liquid water at 100 degrees celsius?
Sunday, April 1, 2012 at 10:53pm

General Science
What is the ohms if voltage is 24 and I is 6?
Sunday, April 1, 2012 at 10:50pm

writing
Can someone please check my answers which of the following would always require a citation in a research paper? thesis statenment an anecdotal experience a quotation (answer) a humorous statement Which of the following shows the correct parenthetical citation for information ...
Sunday, April 1, 2012 at 10:17pm

Science
michelle weighs 900 N. How much pressure does she apply when she stands on her head, if the part of her head touching the floor has a radius of 2cm?
Sunday, April 1, 2012 at 7:58pm

science
what you could conclude about the temperature of Mercury based on its position in the solar system?
Sunday, April 1, 2012 at 3:43pm

science
what you could conclude about the temperature of Mercury based on its position in the solar system?
Sunday, April 1, 2012 at 3:04pm

science
why an astronaut would be able to lift heavy equipment more easily on the moon thanon earth?
Sunday, April 1, 2012 at 2:50pm

Science 7R Help!
Science Hw - TB pg 621 Reviewing Vocab. 1-10 Checking Concept 1-10 I'm on reviewing vocab. qs. 8 and I'm having trouble with this inorganic nutrient isn't food group? mineral? protien? nutrient? if im wrong can you provide me a info. that I can read that says the ...
Sunday, April 1, 2012 at 1:42pm

math
The ratio of girls to boys in a science class is 5:6. Can there be 15 boys in the class? Explain why or why not.
Sunday, April 1, 2012 at 11:11am

Fundamental of computer science
Pseudocode CountPositive integer totalPos,number Begin loop Input numbers If number>0 then totalPos<-totalPos +1 Loop while number<>0 Print totalPos Convert the above Pseudocode into a pascal program.
Sunday, April 1, 2012 at 8:22am

science
you are riding your bike at 9km/h. ten minutes later; your speed is 6km/hr.
Saturday, March 31, 2012 at 10:52pm

science
12. The specific heat of copper is 0.385 J/g • °C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of copper from 7°C to 29°C? (1 point)Q = 0.385 J/g • °C x (29°C – 7°C) Q = 0.75 g x ...
Saturday, March 31, 2012 at 7:12pm

science
A 600- newton diver dives off a 10 meter platform. If it takes 2 seconds to hit the water, what is the diver's power?
Saturday, March 31, 2012 at 6:57pm

PLEASE HELP!!!
Hi, I'm doing a science fair and they're asking us to put pictures of us doing experiments or to bring in a model. In my project I experimented on people so was I supposed to take pictures of people performing the tasks? I already did the project and experiments and ...
Saturday, March 31, 2012 at 4:48pm

finance
Weighted Average Cost of Capital)As a member of the Finance Department of Ranch Manufacturing, your supervisor has asked you to compute the appropriate discount rate to use when evaluating the purchase of new packaging equipment for the plant. Under the assumption that the ...
Saturday, March 31, 2012 at 4:38pm

science fair
Hi, I'm doing a science fair and they're asking us to put pictures of us doing experiments or to bring in a model. In my project I experimented on people so was I supposed to take pictures of people performing the tasks? I already did the project and experiments and ...
Saturday, March 31, 2012 at 3:14pm

SCIENCE
when 10.0 ml of .012 M PbNO32 is mixed with 10.0 ml of .030 M KI, a yellow precipitate of PbI2 forms. calculate the initial molarity of Pb+2 calculate the initial molarity of I- On measuring the equilibrium concentration of I-, it came out to be 8.0 x 10^-3 M. Calculate the ...
Friday, March 30, 2012 at 12:26pm

Science 7R
name in order the organs through which food passes as it moves through the digestive system
Thursday, March 29, 2012 at 9:24pm

math fraction
10 out of 36 students love math, 13 love science and the rest love english. write down the fraction of students who love science.
Thursday, March 29, 2012 at 8:12pm

Science
Ok I am kinda stuck on this problem. So the question is; A measure of the average kinetic energy in an object is______________; so I really need an answer. The passage is about the solar system. Please help anything right now, even a word! Lol. Ok thank you if u answer!
Thursday, March 29, 2012 at 6:24pm

science
What is the average speed of a car that travels 320km in 3.5 hours?
Thursday, March 29, 2012 at 6:01pm

science
Hi, tomorrow is my science practical and i need help with independent and dependent variables. PLEASE HELP
Thursday, March 29, 2012 at 4:56pm

Pages: <<Prev | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | Next>>

Post a New Question | Current Questions

Homework Help

For Further Reading