Science

Recent Questions

science
A wire of resistance 12 ohm per metre is bent to form a complete circle of radius 10 c.m.the resistance between its two diametrically opposite point A and B

science
how are relative dating and absolute dating different

science
1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body. C. A living thing dies and its skeleton is left exposed to ...

SCIENCE
The burning of fossil fuels cause the earth to get warmer by putting carbon dioxide in the atmosphere and the carbon dioxide traps heat. MY GUESS: TRUE

EARTH SCIENCE
Smog is the worst in.. A. Chicago B. New York C. Los Angles MY GUESS: C. LOS ANGLES

Earth science
TRUE OR FALSE The burning of fossil fuels cause the earth to get warmer by putting carbon dioxide in the atmosphere and the carbon dioxide traps heat. MY GUESS: TRUE Isobars help meteorologists find fronts on weather maps. MY GUESS: FALSE A CLOUD IS A COLLECTION OF WATER ...

science
15 ml of satuated solution of potassium chloride in water at 50 degrees celecius is raised to 70 degrees celecius. How much more kcl will dissolve

Science - MIT
Which of the following is a possible set of n, l, mi, and ms quantum numbers for the last electron added to form a gallium atom (Z=31)? 4,1,1,1/2

science
Blank is a major component of bones and the proteins that build muscles

science
A running back has 3500 J of kinetic energy and is running at a speed of 8 m/s. Calculate his mass.

science
is this correct? what I just sent you?

science
The various groups who make up the US public have different expectations of science. How do these differing expectations of science affect the ways groups place trust in science? Describe one example of a controversial expectation that the author gives. Resnik, D. (2011). ...

Science
If 1 J of energy is applied to lift an object of 500 kg how high will it rise?

Science
The work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h is?

Science
A ball is thrown up and attains a maximum height of 1000 m.It's initial speed was?

Science
WHY PUMICE STONE FLOAT IN WATER

physical science
For questions #14 – 16, write an equation for the reaction of magnesium oxide with sodium chloride to produce magnesium chloride and sodium oxide. 14. Show the formulas of the reactants. 15. Show the formulas of the products. 16. Write the balanced the equation for this ...

Maths lite, business, geography, life science
What carreer can I choose after matric with these subjects?

Science
How have humans observed heredity over time and how has that perception changed as major paradigm shifts in the discipline took place?

Science
Explain the concept of public trust as the author uses it. Resnik, D. (2011). Scientific Research and the Public Trust. Science & Engineering Ethics, 17(3), 399-409

Writing/Environmental science
I'm writing a thesis/research paper on how all animals play an important role on the environment. I'm trying to narrow my paper down on an endangered species but I'm having trouble deciding/thinking of a species that play IMPORTANT roles (ie.- honeybees). Except I cannot ...

science
Explain the concept of public trust as the author uses it.

Physical Science
Balancing Decay Reactions. Fill in the blank with the correct piece to balance the decay equation. 1. (184/74) W (4/2) He + _____ 2. (210/82) Pb______+ (206/80) Hg 3. (35/16) S  (0/-1) e + _______ 4. ________  (0/-1) e + (60/28) Ni My work: 5. (...

science
How have humans perceived heredity over time and how has that perception changed as major paradigm shifts in the discipline took place.

Science
In a sample of 0.65L of H2O contains 2.5×10^50 molecules.What is the density of sample of H2O?

Science
How are respiration and fermentation similar? How are they different?

Science
Can an egg or sperm be formed through mitosis?

Science
Check my answers please? Imagine that you remove all the atoms from a chair. What remains? 1. nothing 2. a pile of dust I choose 1. Which of the following is not made of atoms? 1. heat 2. a solid 3. a gas I choose 1. What about matter is true? 1. atoms are not matter but they ...

Science
What allows small particles to move through cell membranes? Is it diffusion?

Science
Which term describes a type of trait that is usually expressed only when an organism has two identical alleles for the trait? A- homozygous B- dominant C- heterozygous D- recessive My guess is A.

science
Calculate the weight of gold having specific heat capacity 0.13 joule which is heated from 25 degree c to 300 degree c, where the heat absorbed is 1500 joule?

science
NaOH + HSO -+ Which of the following is the number of moles of NaOH required to neutralize 1 mole of H2SO4 in the equation above?

science
A circular disk is rotating in a horizontal plane with a time period 3.14 second.At what distance from the center a coin of mass 10 gram may be kept so that the coin coin may remains stationary the coefficient of friction is 0.52?

Science Please Check!
Which term describes a type of trait that is usually expressed only when an organism has two identical alleles for the trait? A- homozygous B- dominant C- heterozygous D- recessive My guess is D. Please help!

science
Which of the following best describes the process of diffusion?

HEALTH
Phonology refers to the science which treats

HEALTH
Phonology refers to the science which treats A. blood disorders. B. vocal sounds. C. heart rhythms. D. nutritional deficiencies.

Science
Assume that you have 15ml of 2.5M potassium hydroxide but only have concentrated bottle of 16M strength. How would you obtain this

Math
The mean of Susan's math and science scores is 74 points. The mean of her math and English scores is 83 points. How many more points did Susan score in English than in science?

science
In the course of a short race a car does 50,000 j of work in 7s what is the power of the car during the race

Science Please Help
an illness caused by fungus

Science-Physics
A mover is pushing a crate across the floor. He exerts a force of 500 Newtons and pushes the crate a distance of 5 Meters. How much work did the mover do on the crate?

Graph Theory/ Algorithms / Computer science
I am working on this problem from the book, Data Structures & Algorithm Analysis in C++. The problem is: 9.40 Give a polynomial-time algorithm that finds ceil(V /2) vertices that collectively cover at least three-fourths (3/4) of the edges in an arbitrary undirected ...

science
uncertainties for... grams? digital balance cm? minutes? 5 minutes? milliliter (ml)?

Science
Why are liners laid down at the bottom of a landfill before waste is deposited in the landfill ?

Science
Express your opinion about dealing with antibiotic resistance you think are most important to pursue.

science 8
Waht is the reason for the seasons experiment?

science
why is it rare for the soft parts of an organism to become a fossil? a) the soft parts take a long time to decay b) the soft parts can be eaten by animals***** c) the soft parts cannot be buried in sediment d) the soft parts form petrified fossils which of the following terms ...

Science
Why are there variations in atmospheric pressure how was this proven? Why do your ear pop when trebling to different altitudes?

science 1 question
which of the following is an example of an effect of natural selection? All of the children of two parents are male. Carbon cycles through ecosystem. Favorable environmental conditions cause an increased food supply. Polar bears have white fur. Is the answer C?

Science help
1.Some plastics are made from corn. These plastics are biodegradeable. This means that plastics made from corn will (blank) than regular plastic My answer decompose faster 2. In the ocean, there are areas where there are very few living things. (Blank) is the term that ...

Science help
A (blank) is a tool used to capture the energy in sunlight. My answer Photochemical Am I right?

Science
9. If the following graph represents the decay of strontium-90 in an igneous rock, what event occurred at 0 years on the horizontal axis? There is a picture but I cant upload it. Please help me!

Science help
In the ocean, there are areas where there are very few living things. (Blank) is the term that described when this happens to a natural gas. My answrer Aquaculture Am I right?

Science help
A homeowner determined that he used 114 gallons of oil every month to heat his home in the winter. This information would be considered part of his My answer Carbon footprint Am I right?

Science help
(Blank) are nonrenewable resources that are used around the world because they are relatively inexpensive. My answer Fossil fuels Am I right?

Science Help!!!!
To solve the problem of a polluted stream a scientist traced where the pollution was coming from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of (blank) pollution ...

Science
During exercise your body's blood pressure increases as it cool down the body's blood pressure slowly returns to its normal state this is know as?

Physics
Instructions: Read the following paragraph carefully. Then use what you know about momentum, work, and energy to answer the following questions. Be sure to show your work. You are a traffic accident investigator. You have arrived at the scene of an accident. Two cars of equal ...

Science
Creativity is always discouraged in scientific endeavors. True or False. I thinks its true.

Science
The speed of light is 3 x 10 to the 8th power meters per second. If the sun is 1.5 x 10 to the 11th power meters from earth, how many seconds does it take light to reach the earth?

Science Help!!!!
1. Which of the following types of pollution cannotbe attributed to car and truck emissions? A. Acid rain B. Sedimentation C. Ozone D. Photochemical smog 2. In which of the following places is it more difficult to determine if there is pollution? A. Aquifer B. Stream C. Air D...

Science Help!!!!
1. Running the dishwasher only when it is completely full is an example of A. Increases resource use B. Using nonrenewable resources C. Using renewable resources D. Reducing resource use 2. Cotton is a plant used to make clothing. Cotton would best fit into which of the ...

Science Help!!!!
How does using coal to generate electricity affect the enviroment? A. Using more coal reduces the amount of pollution from using oil. B. Using coal improves the quality of nearby water. C. Using coal, instead od wood from trees, helps improve the inviroment. D. Using coal ...

Physical science
What is the formula of magnesium sulfate and ammonia? My work:MgSO4 + 2NH4OH --> (NH4)2SO4 + Mg(OH)2 Correct/Balance the equation below. MgSO4 + NH4OH → (NH4)2SO4 + Mg(OH)2

Science Help!!!!
Solar,wind,nuclear,and hydorelectric energy sources are similar in which of the following ways? A. They are all nonrenewable energy sources. B. They all require an indirect use of sunlight in order to make electricity. C. They are all considered alternative energy sources. D. ...

Science Help!!!!
In which of the following places is it more difficult to determine if there is pollution? A. Aquifer B. Stream C. Ajr D. Pond Is the answer d?

Science Help!!!!
Which of the following energy sources is relativelyexpensive to set up, but has a low cost once it is in place? A. Natural gas B. Coal C. Nuclear power D. Solar power Is the answer D?

Science Help!!!!
Which of the following is used to make biomass fuel? A. Coal B. Natural gas C. Plants and animal waste D. Petroleum Is the answer C?

Science Help!!!!
Which of the following is a source of photochemical smog. A. Fossil fuels B. Wind energy C. Biomass fuels D. Nuclear energy Is the answer A?

Science
I am having a very had time completing this question What and how does the cell membrane regulate? What three factors influence this process?

Science
15 ml of saturated solution of potassium chloride in water at 50 degress Celsius is raised to 70 degress Celsius. How much more kcl will dissolve?

Science
Can someone actually help me with this...? Instead of telling me to use my books... (My school does NOT give us books.!) How is incomplete dominance different than dominance? Explain why incomplete dominance only occurs in this genotype?

Science 😭
How is incomplete dominance different than dominance? Explain why incomplete dominance only occurs in this genotype?

science
how many cell divisions would it take to produce at least 1000 cells from one Cell?

science
An experiment is set up to test whether a particular insect prefer a dark or a bright environment. A chamber with a gradient in light intensity from one end (dark) to the other (bright) has been made. The experimental hypothesis is: “There will be a large difference between ...

Science
How to find Electron Configuration

Grade 9 Science
why does a planet's orbital radius represents that planet's average distance from the sun and not its exact distance?

Science
An airplane with a speed of 27.4 m/s is climbing upward at an angle of 48° counterclockwise from the positive x axis. When the plane's altitude is 860 m the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point...

art
which of the following was true of the age of reason? a. people justified their faith using scientific principles b. people valued science over faith c. people debated the raison detre

science
A polo player hits a ball with a mass of 0.42 kg with a force of 7.35 Newtons. How does the force the polo player's mallet exerted on the ball compare to the force the ball exerted on the mallet? A. The force of the mallet on the ball is equal in magnitude and opposite in ...

science
example of a change in state in state that releases energy

science
2) Which is not an example of matter? A. water B. air(i think it this one) C. gold D. sound 3) The amount of space an object occupies is called its ..... A. volume(i think it this one) B. mass C. electricity D. gravity 4) Atoms in a molecule are joined together by.. A. ...

Science
Pure gold can be fashioned into elaborate masks and thin plates that can be incorporated into clothing.what physical trait of metal doea this demosnstrate

Science
When magnesium oxide (MgO) and water (H20)react, they produce magnesium hydroxide Mg(OH)2. Magnesium hydroxide is a medicine used to treat an upset stomach. The equation for this chemical change is shown below: MgO + H20 --> Mg(OH)2 if 40.00 grams of magnesium oxide and 18....

Science
Name two functions of a nucleus. [I think one of them is that it contains the cell's DNA.]

science
A couple has just learned that their daughter has hemophilia. They already have a son who does not have the disease. What are the genotypes of the couple? Explain your reasoning.

Science Help
Drew is walking back up the best hill in the neighborhood 24* grade. He's pulling on the empty 2.1kg sled with a force of 18N at an angle of 55* with the hill. He's walking with a constant velocity, what is the coefficient of friction?

science
a 150 gram bullet is fired with a speed of 50 ms if it is stopped after hitting a target 101 meters away what is its initial KE

science: question
is autoclaving same as heating the tooth?

Science Project: Teeth (PLEASE HELP)
How hot should water be for teeth to stay in for 30 minutes? I don't have any equipments to heat the teeth and I have check the hospital and have asked my mom.She works in the hospital there and she says they have one in the lab and I can't use it anyway. I'm planning to boil ...

math
A total of 121 people came to the school science fair this year. This is 7 more than twice the number of people who came to last years science fair. How many people came last year?

Science
I have to write an argument date why the adaptation of camouflage helps a predator more than it helps a prey animal and I have to have 3 valid points. What is a good website to research this?

Science tech
What do bridges and buildings have in common ?

Science
Bird. Trait Hummingbird Wings: Legs: Beak: Body: Penguin. .Wings: Legs: Beak: Body: why it might be beneficial for different types of birds to have different types of bodies

Science
Liquid A=0.68 g/ml Liquid B=0.76 g/ml Liquid C=1.00 g/ml Liquid D=1.08 g/ml A new liquid with a density of 0.97 g/ml is poured into a graduate cylinder. Where would it layer in relationship to the other liquids?

science
Lava flows from cracks in the earth and hardens into basalt, what type of rock result, is the answer sedimentary

science
Heat and pressure change rock inside the earth crust into gneiss. What type of rock result. Is the answer igneous

science
Pressure changes layers of mud into shale. What type of rock is the answer sedimentary

science
Some people that suffers from clinical depression experience feelings of tiredness and feel the need to sleep much more than usual. a. How and why is feeling of tiredness and lethargy connected to depression? b. Is it better to fight off the feeling of tiredness and sleepiness...

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