Science

Recent Questions

H S Algebra
Kelly made a 94 and an 80 on the first two science tests. What does she need to make on the third test to have at least a 90 average in the class?

English
Identify the choice that best describes the word "sometimes" I sometimes read the science section of the Sunday Newspaper. article adjective proper adjective adverb*** *** - My Answer

English
Identify the choice that best describes the word "strongly" However, when a science article is about something that strongly appeals to me, such as snowflakes, I become interested. article adjective*** proper adjective*** adverb *** - My Answer Not sure whether adjective or ...

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

Science
Three major branches of earth science: Meteorology Geology Oceanography

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 covered in a thick...

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

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 ...

Science
which pair of terms correctly completes the diagram with (a) before "spores" and (b) after "spores"

Science
Angiosperms & Gymnosperms both produce? A.)Flowers B.)Cones C.)Spores D.)Seeds

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 ?

Science PLEASE help!
What is the difference between a scientific theory and a scientific law?

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

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 ...

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 (String), ...

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.

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...

science
titanium reacts with oxygen a chemical change or a physical change

Science PLEASE HELP
Could a mixture be made up of only elements and no compounds? Explain why or why not.

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?

Science
Could a mixture be made up of only elements and no compounds? Explain why or why not.

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)

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. ...

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.

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

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 it be something like this: ...

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?

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 ...

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.

science
The net force on a rock with a mass of 2.0kg is 19.6N. What is the acceleration of the rock?

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 ...

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 chloride) and...

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 ...

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?

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

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

Life science,maths lit, history,geography
Can i become a nurse if i study those subjects?

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?

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?

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

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?

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

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?

Science
Footprints and trails are examples of trace fossils. True*** False

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

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 its...

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?

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 =]

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?

science
True or False Mutation of germ cells can be inherited. True?

science
concentration of PbI ions in SLN saturated with PbI solid containing dissolved I- with a concentration of 0.085M

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 size...

Physical Science
how much energy must be removed from 1 L of water at 25 C and turn it to ice at -10 C?

math,science,algebra,geography
does any1 know a website that I can find answers to every subject asap?

Science
A 100kg block rests on a table. The area of contact between the block and the table is 4m2. Calculate the pressure.

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

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.

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

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.

science
What is the volume of a cardboard box that is 11 inches long, 3 inches wide, and 7 inches high.

science
Describe how you would find the mass of 250mL of water

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-

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 ...

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!!!!

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 ...

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 ...

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*

science
preparation of 600ppm sodium ions from sodium carbonate

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!

Physical Science
Why do molecules in a cup of water move at a variety of speeds?

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?

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 ...

, 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-

, 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-

science
acrostic poem for "THE NERVOUS SYSTEM" please help been trying all day can get it

science
I need help on a acrostic poem for nervous system. Anyone please do tomorrow

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.

science
Show that 9300 cal is required to change 15g of 20C water to 100C steam

science
chemistry Science.what can be deduced from the temperature change during the different reaction?

sofunda
science chemistry..investigate the reaction of a number of elements and compound with water and classify the reaction as exothermic or endothermic.

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. ...

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

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 other?

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 = p1v1 / ...

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?

science
Consider the diprotic acid H2A with K1 =1.00 X 10-4 and K2 = 1.00 X 10-8 . Find the pH and concentrations of H2A, HA- , and A2- in: (a) 0.100 M H2A; (b) 0.100 M NaHA; (c) 0.100 M Na2A.

science
How is ethyl alcohol convert into chloroform?

science
How is 2-iodopropane convert into 2,3-dimethyl?

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. ...

Science
How long does a mHz take to travel?

science
How fast does a kHz travel per second?

jules
Science

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?

science
You have a different rock with a volume of 30m3 and a mass of 60 g

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.

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?

Science
How can you evaluate scientific claims? NEED HELP!

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 ...

science
need to about cells HEL:P

Science
how can models help in science, why they are important, what and some examples of models.

  1. Pages:
  2. <<Prev
  3. 61
  4. 62
  5. 63
  6. 64
  7. 65
  8. 66
  9. 67
  10. 68
  11. 69
  12. 70
  13. 71
  14. 72
  15. 73
  16. 74
  17. 75
  18. Next>>