Saturday
February 6, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

English
Identify the choice that best describes the word "reassuring" Although I do not pretend to understand the science behind it, this is reassuring to me. adverb*** adjective article compound adjective *** - My Answer
Monday, September 28, 2015 by Kaai97

Science
Three major branches of earth science: Meteorology Geology Oceanography
Monday, September 28, 2015 by Sue

SCIENCE
which of the following allows a plant's vascular system to work as a transport system? A. a plant's vascular system is made up of specialized cells that move around the plants as it grows. B. a plant's vascular system is made up of specialized cells that are ...
Monday, September 28, 2015 by I NEED HELP FAST!

Science
a gummy bear experiment a solution of hot water and acid is used to see which solute would make the gummy bear dissolve faster. What is the dependent variable? Gummy bear Independent variable: hot water, and acid
Monday, September 28, 2015 by Sue

Science
What are the advantages and disadvantages of Mathematical model - disadvantage: it often cannot account for all possible factors Advantage to a mathematical model is it can be applied to categories of any size and can predict complex events Physical Model - Disadvantage: they ...
Monday, September 28, 2015 by Sue

Science
which pair of terms correctly completes the diagram with (a) before "spores" and (b) after "spores"
Monday, September 28, 2015 by DJ

Science
Angiosperms & Gymnosperms both produce? A.)Flowers B.)Cones C.)Spores D.)Seeds
Monday, September 28, 2015 by DJ

Science
In ferns, the sporophyte produces(1 point) A.)CONES,WHICH GROW INTO A GAMETOPHYTE B.)GAMETES, WHICH GROW INTO A GAMETOPHYTE C.)SPORES, WHICH GROW INTO A GAMETOPHYTE D.)SEEDS, WHICH GROW INTO A GAMETOPHYTE ?
Monday, September 28, 2015 by DJ

Science PLEASE help!
What is the difference between a scientific theory and a scientific law?
Monday, September 28, 2015 by Grace

Science
A student measures a room to be 20.0m*17.16m. Which of the numbers below represents the room's area with the correct number of significant figures? A) 340 meters squared B) 343 meters squared C) 343.2 meters squared D)343.20 meters squared
Monday, September 28, 2015 by Grace

Science
Why do scientists use models of natural science? A) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly B) Scientists use models of natural systems because they like to use art in science. C) ...
Monday, September 28, 2015 by Grace

Science
Why is the use of the inquiry process a practical way to approach science? 5 points My Answer: The inquiry process is a practical way to approach science because the inquiry process begins by asking questions and moving on from there. In science it is important to investigate ...
Monday, September 28, 2015 by Simon

Computer science
Need help on how write this program. "The Eversoft Eraser Company has a list of its customers’ names (not necessarily in alphabetical order) and telephone numbers in a file named "customer" with records of the following form: last_name (String), first_name...
Monday, September 28, 2015 by Poohboi

Science
Does Chewbacca have a human like wiener or is it one of those red rocket type deals? George Lucas won't answer my emails.
Sunday, September 27, 2015 by Adam

science- physics
A car is traveling at a steady 90 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.3 m/s/s.How much time elapses before the motorcycle is moving as fast as the car? How far is the motorcycle from the car when it...
Sunday, September 27, 2015 by Laura

science
titanium reacts with oxygen a chemical change or a physical change
Sunday, September 27, 2015 by Krystal

Science PLEASE HELP
Could a mixture be made up of only elements and no compounds? Explain why or why not.
Sunday, September 27, 2015 by Katie

science
when an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183C degree and the other has a boiling point of -253C degree. Has a physical or chemical change occurred?
Sunday, September 27, 2015 by dragas

Science
Could a mixture be made up of only elements and no compounds? Explain why or why not.
Sunday, September 27, 2015 by Katie

Science
At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? W(J)=F(N)*D(m) (Gravitational pull is 9.8m/s to the second power)
Sunday, September 27, 2015 by CeeJay

science
A system is a group of connected parts that work together as one to produce a particular result. Let’s say that you go to the Smoothie station and get a banana strawberry smoothie. Describe the main parts of this system- input, process, and output. ...
Sunday, September 27, 2015 by Helpppppppppppppppp Plzzzzzzzzzzz

physical science
. You make the following measurements of an object: 22kg and 42m3. What would the object’s density be? Show your work for credit and include final units.
Sunday, September 27, 2015 by bee

science
a stone is falled from a tower of height of 500 m into a pond water. When did we hear the sound of the stone, contact with water from the tower. If velocity of sound is 340m/s and accelaration of gravity is 10 m/s2
Sunday, September 27, 2015 by biki

Computer Science
0 down vote favorite I have to print: Ain't no sunshine when she's gone It's not warm when she's away. Ain't no sunshine when she's gone And she's always gone too long Anytime she goes away. How would I used methods to print these no loops? Would ...
Saturday, September 26, 2015 by Jake

Mathematics in Science
Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 17.10 m wide by 13.0 m long. 17.10*13.0=222.3 m^2 is this right?
Saturday, September 26, 2015 by Helpppppppppppppppp Plzzzzzzzzzzz

english composition
Biosocial science is a new area of science that has developed from recent discoveries. These discoveries include new information about the nature versus nurture debate, cultural determination, and genetic and behavioral tendencies. Researchers hope this new area of study will ...
Saturday, September 26, 2015 by Mark

science
Compare how your weight, mass, and the normal force exerted by the floor change when you are in an elevator that starts from rest and accelerates upward.
Saturday, September 26, 2015 by Liea

science
The net force on a rock with a mass of 2.0kg is 19.6N. What is the acceleration of the rock?
Saturday, September 26, 2015 by Liea

science
True or False? Can someone check to see if I am correct. If not, why? a) Two samples of matter have the same volume must have the same density FALSE: could have different densities b) two samples of matter having the same volume and the same number of particles must have the ...
Saturday, September 26, 2015 by Julia

Science
I have homework in which it asks "Describe the difference between elements, mixtures and compounds. (I have done the first sentence as it was fairly easy. Next is the part I don't understand) You need to draw their chemical formulae (for example KCl for potassium ...
Saturday, September 26, 2015 by Ryan

Science
True or False? Can someone check to see if I am correct. If not, why? a) Two samples of matter have the same volume must have the same density FALSE: could have different densities b) two samples of matter having the same volume and the same number of particles must have the ...
Saturday, September 26, 2015 by Julia

physical science
How do I calculate this problem? How much water vapor is produced for each amount of propane burned. Mass of c3h8 reacted 44, mass of O2 reacted 160, mass of CO2 produces 132?
Friday, September 25, 2015 by Jackie

science
a student is observing a rock. which of the follwoinf is an observation 1. the rock is 55g in mass 2. the rock is over billions of years old
Friday, September 25, 2015 by tom

Science
I have two containers, one is 2ml and the other is 5ml. Which would fill both containers all the way. A.gas B.liquid C.solid D. a combination I believe its A. I am right
Friday, September 25, 2015 by Melissa

Life science,maths lit, history,geography
Can i become a nurse if i study those subjects?
Friday, September 25, 2015 by Kholelwa ntshayi

science
A student adds 3 spoons of salt to 100 ml of water. The solution is clear with nothing on the bottom of the cup. One spoon of the salt has a mass of 5g. What is the mass of the solution? After the water evaporates what is the mass of the solid remaining in the cup?
Thursday, September 24, 2015 by linda

science
a student adds 3 spoons of salt to 100 ml of water. the solution is clear, with nothing on the bottom of the cup. one spoon of the slat ha a mass of 5g. what is the mass of the solution? after the water evaporates, what is the mass of the solid remaining in the cup?
Thursday, September 24, 2015 by linda

Science
A skier squats low and races down a 13 ◦ ski slope. During a 7 s interval, the skier accelerates at 4.2 m/s 2 .What is the vertical component of the skier’s acceleration? Answer in units of m/s 2
Thursday, September 24, 2015 by Luke Smith

science
I want to do my msc project in clown fish. But i did not select an exact topic. Can you help me to select the topic?
Thursday, September 24, 2015 by madhumitha

science
Which physical properties are characteristics of metals? Choose all that apply. -brittle -high luster -malleable -ductile -not very reactive 1, 2, and 5?
Thursday, September 24, 2015 by luke

Science
Can you Describe what happens when a roller coaster rolls downhill in terms of velocity and acceleration. Is the roller coaster increasing in velocity? Is the roller coaster accelerating?
Thursday, September 24, 2015 by brooke

Science
Footprints and trails are examples of trace fossils. True*** False
Thursday, September 24, 2015 by JustHelpMe

Math
Salon an was told the written paper on his science experiment should express measurements in liters. Which shows how to calculate the number of liters he used if he used 5 cups of water
Thursday, September 24, 2015 by Megan

Science
I need help understanding this. I keep re-reading and I'm still confused. Can you help me by re writing it in a way that I can understand? The pressure law states that for a constant volume of gas in a sealed container the temperature of the gas is directly proportional to...
Thursday, September 24, 2015 by Learner

science
does the liver have exocrine and endocrine functions? if so, what the functions? I don't think the liver has both exocrine and endocrine functions. I could be wrong. Someone kindly explain?
Thursday, September 24, 2015 by Anonymous

science
In photosynthesis is carbon dioxide reduced to glucose while water is oxidized to oxygen? am I correct? If not, can someone explain what's reduced into what and what's oxidized into what? thanx =]
Thursday, September 24, 2015 by Anonymous

science
The bonds that holds atoms together in a molecule are a form of a. potential energy b. ionization energy c. kinetic energy d. thermal energy A?
Thursday, September 24, 2015 by Q2

science
True or False Mutation of germ cells can be inherited. True?
Thursday, September 24, 2015 by Q2

science
concentration of PbI ions in SLN saturated with PbI solid containing dissolved I- with a concentration of 0.085M
Thursday, September 24, 2015 by mavis

science
The modern atomic model includes electrons orbiting the nucleus. Which of the following parts of Dalton's atomic model was disproved by the discovery of the electron? - Atoms are tiny particles. - Atoms cannot be divided into smaller parts . - Atoms have specific mass and ...
Wednesday, September 23, 2015 by julia

Physical Science
how much energy must be removed from 1 L of water at 25 C and turn it to ice at -10 C?
Wednesday, September 23, 2015 by Christina

Attention Connections Academy students!!!
I see lots of connections academy students on here but it makes me feel bad that people are asking help on this website. LISTEN! Whatever grade you are in please look at the questions carefully and slowly. If you STILL having trouble web mail or call the teacher!!! I promise ...
Wednesday, September 23, 2015 by Anonymous

math,science,algebra,geography
does any1 know a website that I can find answers to every subject asap?
Wednesday, September 23, 2015 by these nutz

Science
A 100kg block rests on a table. The area of contact between the block and the table is 4m2. Calculate the pressure.
Wednesday, September 23, 2015 by Christopher

Science
What is/are the main factor(s) that determine(s) that your plants will grow into bean plants (or other fast-growing plants that you used for your experiment) and not some other type of plant (genetics, environment, or both)? Explain your answer
Wednesday, September 23, 2015 by Please Help!

science
A body is projected vertically upwards from the ground such that its speed at half the maximum height is 20m/s. Find the maximum height attained by it.
Wednesday, September 23, 2015 by Vidya

Science
What is/are the main factor(s) that determine(s) that your plants will grow into bean plants (or other fast-growing plants that you used for your experiment) and not some other type of plant (genetics, environment, or both)? Explain your answer
Wednesday, September 23, 2015 by Help!

Science
Plants continue to grow throughout their lives by producing new plant material. Photosynthesis is required for this process to occur. True or false? And explain why.
Wednesday, September 23, 2015 by Please check

science
What is the volume of a cardboard box that is 11 inches long, 3 inches wide, and 7 inches high.
Tuesday, September 22, 2015 by Alayssa Hickey

science
Describe how you would find the mass of 250mL of water
Tuesday, September 22, 2015 by aaron

science
Help me please looked everywhere T- the skeletal system consists of 206 bones H- helps protects the body E- S-support K- E- L-ligaments E- T-tendons A- L- S-skeleton Y- S-shape and structure T- E-exercise M-
Tuesday, September 22, 2015 by Anonymous

Science
A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored the dissolved oxygen ...
Tuesday, September 22, 2015 by Mike

Science
In the space below, write a paragraph describing the work of a chemical engineer. Include a description of the different industries that they work in and the skills they need to be successful Need Help!!!!
Tuesday, September 22, 2015 by Anonymous

Science
A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored the dissolved oxygen ...
Tuesday, September 22, 2015 by Michael

AP Environmental Science
Why is it necessary to eliminate absolutely all invasive fire ant colonies to eradicate the invasive population? A)Every colony has a major impact on native flora and fauna. B)Because the last colony found is the one housing the invasion’s queen. C)Even a single remaining...
Tuesday, September 22, 2015 by Savanna

Science Can You Please Check
1. DNA is found in ____ cells. sex sperm all* no 2. A ____ is part of the DNA code on a chromosome. gene* genotype phenotype gender 3. ____ is defined as either male or female except for rare species that have the ability to change sex. Competition Phenotype Genotype Gender*
Tuesday, September 22, 2015 by YOLO

science
preparation of 600ppm sodium ions from sodium carbonate
Tuesday, September 22, 2015 by Eugene

Science Project suggestions??
I cannot think of an original science project idea. I would really like an original one instead of the online ones which have already have their own procedures and stuff. I would like to do a science project that is has to do with chemistry or computer science. Please help!
Tuesday, September 22, 2015 by Eunice

Physical Science
Why do molecules in a cup of water move at a variety of speeds?
Monday, September 21, 2015 by please help!

Political Science
Can states choose to ignore federal speed limit and other safety requirements if they are willing to forego federal funding for highways and roads?
Monday, September 21, 2015 by nan politics

science
Many chemical salts come as hydrated crystals. That is, there is a specific ratio of water molecules associated with the salt crystals e.g. MgSO4.7H2O (called Magnesium sulphate heptahydrate FW = 246.5) has 7 water molecules to every Mg2+ and SO42- ion pair. But it is also ...
Monday, September 21, 2015 by Lisa

, science,
GOT STUCK PLEASE HELP LOOKED AT EVERY WEBSITE T- the skeletal system consists of 206 bones H- helps protects the body E- S-support K- E- L-ligaments E- T-tendons A- L- S-skeleton Y- S-shape and structure T- E-exercise M-
Monday, September 21, 2015 by erc33

, science,
HELP ME FISNSH MY POEM PLEASE T- H- E- S-support K- E-energy support L-ligaments E- T-tendons A- L- S-skeleton Y- S-shape and structure T- E-exercise M-
Monday, September 21, 2015 by be90

science
acrostic poem for "THE NERVOUS SYSTEM" please help been trying all day can get it
Monday, September 21, 2015 by ben54

science
I need help on a acrostic poem for nervous system. Anyone please do tomorrow
Monday, September 21, 2015 by benj

Science
The solubility of a compound in water is 6.8g/100ml at 25°C.. Calculate the amount of water required to crystallize 10g of the compound. If the pure compound is collected at 25°C what is the maximum possible yield percent.
Monday, September 21, 2015 by Charles

science
Show that 9300 cal is required to change 15g of 20C water to 100C steam
Monday, September 21, 2015 by favev

science
chemistry Science.what can be deduced from the temperature change during the different reaction?
Monday, September 21, 2015 by ofentse

sofunda
science chemistry..investigate the reaction of a number of elements and compound with water and classify the reaction as exothermic or endothermic.
Monday, September 21, 2015 by ofentse

Science
A vitamin C tablet was dissolved in 50.0 mL of water. The resulting solution was titrated to the equivalence point with 28.5 mL of 0.100 M I3− solution. What is the starting mass of the tablet assuming the tablet is 100% vitamin C? I found the moles in I3- to be .00285. ...
Monday, September 21, 2015 by Clay

integrated science
with all other factors equal, if you double the balanced force on an abject of a given mass the acceleration will be?
Sunday, September 20, 2015 by lala

Science
In the following total ionic equation which ions are spectator ions? 2 Na+ (aq) + 2 Cl−(aq) + Pb2+(aq) + 2 NO3−(aq) ¨ PbCl2 (s) + 2 Na+ (aq) + 2NO3− (aq) I think the answer is all of them because I DO NOT see any that cancel from one side to the ...
Sunday, September 20, 2015 by Clay

Science
Suppose that a sample of gas occupies 119 mL of volume at 25◦C and a pressure of 221 torr. What would be the volume if the pressure were changed to 647 torr at 25◦C? This is boyle's law right? p1v1 = p2v2 Since I'm looking for v2 I rearranged it to be v2 = ...
Sunday, September 20, 2015 by RT

Science
Please help!!! You mix 100 millimeters of 10 degrees Celsius water and 100 millimeters of 90 degrees Celsius water. What is the final temperature?
Sunday, September 20, 2015 by N

science
How is ethyl alcohol convert into chloroform?
Sunday, September 20, 2015 by wungmung

science
How is 2-iodopropane convert into 2,3-dimethyl?
Sunday, September 20, 2015 by wungmung

Science
The airplane can take off when its airspeed (speed of the air flowing over the wing) is equal to 65 knots. What is the length of runway required for the plane to take off if there is a 13 knots head wind? The runway at the Tallahassee Regional Airport has a length of 8000 ft. ...
Sunday, September 20, 2015 by Emi

Science
How long does a mHz take to travel?
Sunday, September 20, 2015 by Anonymous

science
How fast does a kHz travel per second?
Sunday, September 20, 2015 by Christine

jules
Science
Saturday, September 19, 2015 by tumi

Science
If the trend in the graph continues through the summer, what would you expect the average high temperature in Louisville, Kentucky, to be in August? A. 66F B. 83F** C. 103F D. 125F I don't know how to give you think link. Any ideas?
Saturday, September 19, 2015 by Shi Buringa

science
You have a different rock with a volume of 30m3 and a mass of 60 g
Saturday, September 19, 2015 by Anonymous

Science- Physics
Two plane mirrors, A and B, are separated by 30.0 cm facing each other. An object is placed 20 cm from mirror A. Locate the first two nearest image formed by each mirror.
Saturday, September 19, 2015 by trsgts

Science- Physics
A plane mirror is mounted at the back of the truck that is moving at 25 km/h. How fast does the image of a man standing on the road seem to be moving away from him?
Saturday, September 19, 2015 by trsgts

Science
How can you evaluate scientific claims? NEED HELP!
Friday, September 18, 2015 by Iris

earth science
Stellar evolution is the life cycle of a star. A cycle suggests that upon death of a star, another star is born. How is this possible? Stars never really die. The death is a black dwarf star. This type of death triggers the birth of a new star. The death is a red giant. This ...
Friday, September 18, 2015 by korey

science
need to about cells HEL:P
Friday, September 18, 2015 by Cutiepie

Science
how can models help in science, why they are important, what and some examples of models.
Friday, September 18, 2015 by Iris

7th Grade Science Help Please
For his science project, Austin wants to determine if the pH of standing rainwater and places it indoors in a spot that does not receive a lot of sunlight to limit evaporation. Using a pH testing kit, he measures the pH of the water once a day for 20 days. What is the ...
Friday, September 18, 2015 by MusicLover14

Science
Find the gravitational acceleration if a spaceship at a distance equal to double of earth's radius from the centre of the earth (g on earth is 9.8 m/s)
Friday, September 18, 2015 by Gautam pandey

  1. Pages:
  2. <<Prev
  3. 6
  4. 7
  5. 8
  6. 9
  7. 10
  8. 11
  9. 12
  10. 13
  11. 14
  12. 15
  13. 16
  14. 17
  15. 18
  16. 19
  17. 20
  18. Next>>