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April 24, 2014

Homework Help: Science

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Recent Science Questions

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science
__________ are used to show the relationship or trends between data collected in an experiment.
Wednesday, September 18, 2013 at 4:50pm

science
A variable is _____________ to change the outcome or the result of the experiment.
Wednesday, September 18, 2013 at 4:42pm

Science Significant Figures
Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 14.10 m wide by 15.0 m long. If I multiply the two values and round to the nearest whole number, I get 212 m^2. Is this right?
Wednesday, September 18, 2013 at 2:28pm

Math in Science
A student measures the volume of a liquid and finds it to be 40mL. How many significant figures are in the measurement? 1 *** 2 3 4 Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 14.10 m wide by 15.0 m long. 212 m^2*** 211...
Tuesday, September 17, 2013 at 10:52pm

Science
How do high tides affect storm forecasts in coastal communities
Tuesday, September 17, 2013 at 7:28pm

science
how do high tides affect storm forecasts in coast communities?
Tuesday, September 17, 2013 at 7:21pm

Science
How do high tides affect storm forecasts in coastal communities ?
Tuesday, September 17, 2013 at 6:49pm

physical science
a sample gas occupies 1.00 x 10 to the 6th at 575 mm Hg. if the pressure is changed to 950 mm Hg, what will its volume be if the temperature remains the same?
Tuesday, September 17, 2013 at 6:31pm

Science
If you start a project at 5:45pm and you check on the project every 30 minutes for 3 hours, what times will you check on the project
Tuesday, September 17, 2013 at 5:38pm

Science
which of the following correctly identifies an Sl unit and the tool that is used to measure it? (1 point) meter,ruler*** degrees Fahrenheit, thermometer gram, scale mililiter, meniscus Am I right?
Tuesday, September 17, 2013 at 12:01pm

science
which of the following correctly identifies an SI unit and the tool that is used to measure it? a. meter, ruler b. degrees Fahrenheit, thermometer c. gram, scale d. millimeter, meniscus Is it a?
Tuesday, September 17, 2013 at 9:25am

Science (PLS JUST LOOK!!!!)
How do you write a tentative outline?
Tuesday, September 17, 2013 at 4:24am

Science (pls just look!)
How do you write a science tentative outline?? I did it wrong and I lost my paper to show me how to do it.. help?
Tuesday, September 17, 2013 at 3:53am

7th Grade
I just wanna know anyone who's been in 7th grade what do you learn in science mostly throughout the year??
Monday, September 16, 2013 at 9:51pm

Science
What is a solute in seawater?
Monday, September 16, 2013 at 8:35pm

Science
Name as many properties of nonmetal as you can.
Monday, September 16, 2013 at 8:35pm

Science
Which property makes a metal useful in electrical devices?
Monday, September 16, 2013 at 8:34pm

Science
The Periodic Table is arranged so that the elements in each column have similar
Monday, September 16, 2013 at 8:27pm

grammar
Can someone help me with parts of speech? Huxley himself came from a long line of intellectuals. His grandfather Thomas Huxley, a follower of Charles Darwin, was a rather famous lecturer and essayist. His great-uncle Matthew Arnold was a great English poet and critic. His ...
Monday, September 16, 2013 at 7:49pm

Science/ Biol PLEASE HELP
microscopic examination of a tissue reveals an open framework of fibers with a large volume of fluid ground substance and elastic fibers. this tissue would most likely have come from the? A. Inner wall of blood vessel B. lungs C. Spleen D. Tissue E. bony socket of eye
Monday, September 16, 2013 at 5:08pm

science
calculate the concentration for the reaction of 0.25mole 0f sodium hydroxide NaOH and water H20 solution of 250cm^3. Provide the answer in cubuc decimeter
Monday, September 16, 2013 at 3:18pm

science
A scientist observes chimps putting dry leaves into a hole in the tree. The leaves come out wet and the chimps lick the water off of the leaves. The scientist reasons that there is water inside the tree. This reasoning is called what?
Monday, September 16, 2013 at 2:57pm

science
A scientist goes to a large international conference and hears about a new discovery. The scientist is very excited about these new findings and decides to verify the other scientists' results by conducting her own investigations. The scientist is being open-minded but ____
Monday, September 16, 2013 at 2:53pm

science
Contact lenses improve lives. Contact lenses are an example of what? Is the answer physics?
Monday, September 16, 2013 at 2:50pm

phycal science
potassium nitrate + water it is a dependent variable or independent variable?
Monday, September 16, 2013 at 12:05pm

phycal science
potassium nitrate + water it is a dependent variable or independent variable?
Monday, September 16, 2013 at 11:58am

Science
which of the following correctly identifies an SI unit and the tool that is used to measure it? a. meter, ruler b. degrees Fahrenheit, thermometer c. gram, scale d. millimeter, meniscus I can't decide between a and c.
Sunday, September 15, 2013 at 10:53pm

science
which of the following correctly identifies an SI unit and the tool that is used to measure it? a. meter, ruler b. degrees Fahrenheit, thermometer c. gram, scale d. millimeter, meniscus I can't decide between a and c.
Sunday, September 15, 2013 at 8:33pm

PHYSICS/SCIENCE
If a Mack truck and a motorcycle have a head-on collision, upon which vehicle is the impact force greater? Which vehicle undergoes the greater change in its motion? Defend your answers.
Sunday, September 15, 2013 at 8:25pm

science
An astronaut of mass 120 kg recedes from her spacecraft by activating a small propulsion unit attached to her back. The force generated by a spurt is 30 N. Show that her acceleration is 0.25 m/s2.
Sunday, September 15, 2013 at 6:45pm

Science
To determine v max and km of Beta-galactosidase for lactose, the same amount of enzyme (1 ug per tube) was incubated with a series of lactose concentrations under conditions where product concentrations remained negligible. At each lactose concentration, the initial reaction ...
Sunday, September 15, 2013 at 3:25pm

Physical Science
a rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Earth to the Moon, which is 381,000 km?
Sunday, September 15, 2013 at 11:52am

science
A student makes the following statement: Chocolate- covered donuts are 10 times better than plain, glazed donuts. Which of the following correctly describes the student’s statement? a-The student’s statement is a quantitative observation. b-The students statement is ...
Saturday, September 14, 2013 at 1:30pm

science
'The subscripts in the chemical formula for a molecular compound are not always in the lowest ratio.' Using what you know about naming binary molecular compounds, provide evidence that supports this statement.
Saturday, September 14, 2013 at 1:17pm

Science
A student observes dark clouds are surrounding the school and the grass on the playground is wet. The student reasons that it rained. Which scientific skill did the student use to determine that it rained? A)Classification B)Observation C)Inference D)Prediction Is it c?
Saturday, September 14, 2013 at 12:23pm

science
Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?)Grams of NaCl Moles of NaCl Number ...
Saturday, September 14, 2013 at 11:08am

Science
Helium doesn't react with any other substance. Is it accurate to say that helium has no chemical properties? Explain. Please help because I'm not sure of the answer. Thank you.
Friday, September 13, 2013 at 11:15pm

Life Science
Im doing 7th grade life science. (im 13.) I need to make sure my answers are right because my homework is being graded. I think i have most of them right but we'll see. I DO NOT want you to tell me the answer to my homework. I just want you to tell me if its wrong or not. ...
Friday, September 13, 2013 at 8:42pm

teacher aide
when are children first developmentally ready to begin learning science
Friday, September 13, 2013 at 7:24pm

science
A car is traveling down the road at 25 m/s,and then increases their speed to 45 m/s in 5 seconds. What is this car's acceleration?
Friday, September 13, 2013 at 1:09pm

Inroduction to Managment Science
reboot inc, manufacturer of hiking boots. make a rough sktch of a spreadsheet model, with blocks laid out for the data cells changing celss, ouput cells, and target cells.
Friday, September 13, 2013 at 11:43am

science
Compare and contrast the reproduction of mosses, ferns, gymnosperms, and angiosperms
Friday, September 13, 2013 at 2:36am

science
why is sexual reproduction better than a sexual reproduction for ensuring the survival of a species in a changing environment?
Friday, September 13, 2013 at 2:29am

science
Medicine A will reduce the incidence of headaches . what is the independent variable and dependent variable and the two controlled variables?
Thursday, September 12, 2013 at 9:52pm

Science
What is a object in which the electrons at one end spin in one direction and the electrons at the other end spin in an opposite direction? A. load B. turbine C. Magnet D. Charge
Thursday, September 12, 2013 at 6:11pm

Science
what is a device that does work in a electrical current? A. load B. turbine C. charge D. Magnet
Thursday, September 12, 2013 at 6:10pm

Physical Science
2. Including a full-wave rectifier in an AC circuit will yield a(n) _______ current. A. continuous alternating B. continuous direct C. intermittent direct D. intermittent alternating
Thursday, September 12, 2013 at 1:07pm

Physical Science
2. Including a full-wave rectifier in an AC circuit will yield a(n) _______ current. A. continuous alternating B. continuous direct C. intermittent direct D. intermittent alternating
Thursday, September 12, 2013 at 1:01pm

science
what is difference between voluntary and involuntary muscle?
Thursday, September 12, 2013 at 12:22pm

science
If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable...
Thursday, September 12, 2013 at 12:06pm

Science
1)Which of the following is a valid reason to study science?(1point) All employers require an in-depth knowledge of science. Carrying out scientific experiments is a requirement of everyday life. Most colleges require advanced science classes. Understanding basic science terms...
Thursday, September 12, 2013 at 11:46am

Science
4)A student observes dark clouds are surrounding the school and the grass on the playground is wet. The student reasons that it rained. Which scientific skill did the student use to determine that it rained?(1point) Classification Observation Inference Prediction*** Am I ...
Thursday, September 12, 2013 at 11:06am

Science
If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable...
Thursday, September 12, 2013 at 9:45am

Science
1)A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. To do this, he sprays the chemical on three plants he has in the laboratory. None of the plants survive. The scientist reports that the ...
Wednesday, September 11, 2013 at 11:07pm

science
If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable...
Wednesday, September 11, 2013 at 10:21pm

earth science
In what layer of the atmosphere do temperatures rise with altitude? A. Troposphere B. Mesosphere C. Mesopause D. Stratosphere is it d ?
Wednesday, September 11, 2013 at 9:26pm

science
what causes scientific knowledge to change?
Wednesday, September 11, 2013 at 8:32pm

English, check my answers
please check if I have put the apostrophes in the right places or if I have forgot to put them in certain places in these sentences: 1. My dog's been so sick lately. 2. We've been having lots of fun in science classes. 3. Why's the dog eating from the cats' ...
Wednesday, September 11, 2013 at 8:30pm

Science
arrange the following aqueous solutionsin order of increasing freezing points(lowest to highest temperature): 0/10m glucose, 0.10m BaCl2, 0.20mNaCl, and 0.20m Na2SO4.
Wednesday, September 11, 2013 at 7:33pm

Science
If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable...
Wednesday, September 11, 2013 at 7:03pm

Science
A science teacher was curious to see whether offering money for good grades would increase student performance on a test. The teacher offered half the students in the class $5.00 if they got an A on their next test. The other half of the class was not offered any money. What ...
Wednesday, September 11, 2013 at 6:54pm

Science
1) How does water vapour change into solid and liquid water above earth's surface? 2)does all surface runoff move directley into lakes, rivers and oceans? Please help asap it means alot!
Wednesday, September 11, 2013 at 6:33pm

Science
Someone help me urgently!! WTF does the Big Idea of Energy mean?!?!?! KS3 Wise!!! <33333
Wednesday, September 11, 2013 at 3:09pm

Science
which organisms are most important for a healthy lawn? a-birds, b-moss, c-bacteria, d-leaf hoppers, e-bees C=Bacteria
Wednesday, September 11, 2013 at 11:19am

science
Green algae grow in the fur of the South American sloth. The green algae provide camouflage for this tree-doweling mammal, and from the fur and skin of the sloth the algae obtain moisture. A moth also lives in the fur. The moth larvae provide waste material used by the algae ...
Wednesday, September 11, 2013 at 10:57am

Science
A cup of coffee ,a 10 gallon aquarium ,and a bottle of ginger ale were on the same table .on which container was there the greatest punt of air pressure ?
Tuesday, September 10, 2013 at 11:21pm

science
A bullet is fired vertically upward with initial speed wo, at latitude ö. Neglecting air resistance, by what distance will it be displaced horizontally when it returns to the ground?
Tuesday, September 10, 2013 at 10:20pm

Math, science
assume the substance has a half-life of 12 years and the initial amount is 133 grams. How long will it be until only 40 % remains?
Tuesday, September 10, 2013 at 8:36pm

math
on a special scale in the science lab Scott weighed samples of different soils. Sample A weighed 3 ounces. Sample B weighed 814 thousandth of an ounce more than sample A. What decimal should Scott use to record the weight for sample B
Tuesday, September 10, 2013 at 7:34pm

Physical Science
a student is given a 10 gram sample of gold that has a density of 19.32g/cm3. The student is then given a 5 gram sample of an unknown substance and told the density of the unknown substance is 19.32g/cm3. What is the unknown substance
Tuesday, September 10, 2013 at 6:19pm

VERY URGENT SCIENCE
A science teacher was curious to see whether offering money for good grades would increase student performance on a test. The teacher offered half the students in the class $5.00 if they got an A on their next test. The other half of the class was not offered any money. What ...
Tuesday, September 10, 2013 at 3:00pm

Science
A student wants to determine what type of cereal his classmates like best. He buys three of his favorite puffed cereals and one oat cereal. He pours five bowls of each cereal and gives one bowl to each of his 20 classmates. He asks each of his classmates if they liked the ...
Tuesday, September 10, 2013 at 12:10am

science
Are oranges smooth or bumpy?
Monday, September 9, 2013 at 7:48pm

Computer Science
Suppose we are trying to solve Simon's problem with n=4. We ran 4 iterations of Simon's algorithm and obtained 0000, 1101, 1010, and 0110. What is the secret string s? (Assume that s is not the all-zero string 0000.)
Monday, September 9, 2013 at 12:39pm

science
A student wants to determine what type of cereal his classmates like best. He buys three of his favorite puffed cereals and one oat cereal. He pours five bowls of each cereal and gives one bowl to each of his 20 classmates. He asks each of his classmates if they liked the ...
Monday, September 9, 2013 at 11:34am

earth science
Which one of the following is not left in the land as a result of continental glaciers? A. Erratics B. Drumlins C. Loess D. Eskers
Monday, September 9, 2013 at 12:20am

science
A student wants to determine what type of cereal his classmates like best. He buys three of his favorite puffed cereals and one oat cereal. He pours five bowls of each cereal and gives one bowl to each of his 20 classmates. He asks each of his classmates if they liked the ...
Sunday, September 8, 2013 at 10:50pm

Computer Science
The array represents a map with coins, and the integers represent a row and column location of a coin gatherer. The gatherer is greedy and lazy when deciding to which adjacent location (either up, down, left, right) to move next. It’s greedy because it moves to the ...
Sunday, September 8, 2013 at 8:23pm

Computer Science
The array represents a map with coins, and the integers represent a row and column location of a coin gatherer. The gatherer is greedy and lazy when deciding to which adjacent location (either up, down, left, right) to move next. It’s greedy because it moves to the ...
Sunday, September 8, 2013 at 7:34pm

science
a child is pushing a shopping cart at a speed of 1.5 m/s. how long will it take this child to push the cart down the aisle with a lenght of 9.3m?
Sunday, September 8, 2013 at 7:04pm

Science
Why is it important for scientists to be open-minded but skeptical? a) Scientists need to generate many new ideas in order to reach a conclusion. b) Scientists need to be able to listen to new ideas but not accept them as fact without testing them. c) Scientists need to be ...
Sunday, September 8, 2013 at 6:43pm

Science
what the difference between the structures of simple and complex
Sunday, September 8, 2013 at 5:09pm

Material science/ Mechanics
A cube polymer matrix is subjected to elastic deformation in compression by 10 N applied force. The cube is deformed by 20% of its original shape. The cube side has a length of 1 m. If you assume that the polymer has the intrinsic properties of rubber, find the storage shear ...
Sunday, September 8, 2013 at 3:37pm

science
discuss what patterns you observe in regards to dissolved oxygen content and fish populations in the body of water?
Sunday, September 8, 2013 at 9:23am

science
An insect inside a bus flies from the back toward the front at 2 m/a. The bus is moving in a straight line at 2m/a. What is the speed of the insect?
Saturday, September 7, 2013 at 2:32pm

computer science
Write the " 7−2" expression so that no answer includes negative exponents. Assume the variables are nonzero
Friday, September 6, 2013 at 10:45pm

Science
A biologist determines that a lizard's body temperature is 29 degrees C. Which of the following correctly describes the biologist's data? a) it is a qualitative observation b) it is a quantitative observation c) it is a prediction d) it is a classification Is this b?
Friday, September 6, 2013 at 10:04pm

Science
On a hot summer day, you notice a line of dark clouds forming. Based on this observation, you go back inside and get an umbrella. What scientific skill have you used? a) classification b) prediction c) communication d) quantitative observation I think it is most likely b, but ...
Friday, September 6, 2013 at 9:43pm

Science
A chemist notes that a solution turns blue when a chemical reaction takes place. Which of the following correctly describes the chemist's data? a) it is a qualitative observation. b) is is a quantitative observation. c) it is a prediction. d) it is a classification. Is ...
Friday, September 6, 2013 at 9:27pm

Science
You walk into the kitchen and see a broken egg on the floor. Which of the following is an inference you can make based on this observation? a) The egg rolled off the kitchen counter b) the dog will eat the egg off the floor c) there are pieces of broken eggshell on the floor d...
Friday, September 6, 2013 at 8:54pm

education
What can you major if you have associate degree in science. What is difference between associate in science and Associate of Applied Science?
Friday, September 6, 2013 at 12:27pm

science
vector A has a magnitude of 12 units and makes an angle of 30 with the positive x-axis.vector b has a magnitude of 8 units and makes an angle of 80 with the positive x-axis.using a graphical method , find the magnitude and direction of vectors A-B
Friday, September 6, 2013 at 3:50am

Science
How would you explain the purpose of this activity to a fifth grader?
Thursday, September 5, 2013 at 7:42pm

Science
Compare and contrast a positive slope and a negative slope on a positive time graph.
Thursday, September 5, 2013 at 7:40pm

science
BETWEEN THE TRACHEA AND THE ESOPHAGUS AND THE TRACHEA THERE IS A FLAP of skin called epiglottis wath is it for?
Thursday, September 5, 2013 at 7:22pm

physical science
what is the density of iron if 5.0 cm at the third has a mass o 39.5 grams
Thursday, September 5, 2013 at 3:56pm

Physical Science
which waves have wavelengths longer than those of visible light? Give an example of how each kind of wave is used.
Thursday, September 5, 2013 at 9:07am

science
When 36.0g of sodium chloride is added to 100 g of H2O (water) at 25°C all the salt particles dissolve.Yet if you add one more g of salt and stir,no matter how vigorously or how long only 0.2g of the last portion dissolve in the soln.why?
Thursday, September 5, 2013 at 7:29am

Science Physics
Ms. Sue could you please explain this to me. Imagine you need to deliver a piano over three steps. A longer ramp translates into less force necessary to raise the piano's height than a shorter ramp would require. Calculate the percentage smaller a force would be required ...
Thursday, September 5, 2013 at 12:06am

Math
The fifth and sixth grades at Oak Street School are having fair.There are 50 students total and 3/5 of the students are fifth grade students.How many fifth grade students are entered in science fair?
Wednesday, September 4, 2013 at 10:47pm

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