Tuesday
September 27, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

psych
What is the Importance of Research in Behavioral Science?
Monday, February 22, 2016 by sade

English
Help, Please! I don't quite understand what is asking in this assignment (Essay) Task: Write an essay that compares Frankenstein and his creation to a modern zombie story with the focus on how a monster might be used as a metaphor for science or scientific advances and/or ...
Monday, February 22, 2016 by Sarah

physical science
a crate of cooldrinks with a mass of 15kg over a smooth horizontal surface by exerting a force of 80N at 30° to the horizontal. Draw a diagram and aswers the following 1. Draw a force diagram showing and labelling all the forces acting on the crate. 2. Calculate the ...
Monday, February 22, 2016 by Thembelihle Shabangu

Earth Science
Why are there so many different species on Earth today?
Monday, February 22, 2016 by Mike

science
This type of auto-immune disease occurs when the immune system attacks the layer of insulation that surrounds the nerves and slows nerve impulses.
Monday, February 22, 2016 by kevon

science
a 2,8kg trolley is moving to the right with a speed of 0,45m.s^-1. A 1.9kg brick is dropped from rest and lands on the trolley. the trolley and bRick move together across the horizontal surface. Assume an isolated system. determine the change in momentum of the trolley
Monday, February 22, 2016 by Nomfundo

science
In the diagram above, the arrows represent momentum. A larger arrow indicates more momentum. Which of the following best describes how the balls will move after ball A collides with ball B? (1 point) 1. Ball A will bounce off of ball B and roll to the left, and ball B will ...
Monday, February 22, 2016 by help pls

science/bioligy
How would a scientist use DNA or protein sequences from three different organisms to construct a cladogram? need help!!! how do I do this??
Monday, February 22, 2016 by Anonymous

science/biology (cladogram)
How would a scientist use DNA or protein sequences from three different organisms to construct a cladogram? don't understand this how do I write this???? help!!!!
Monday, February 22, 2016 by e,mma

engineering science
A solid cylinder rolls from rest down an incline 6m high without slipping. calculate the linear velocity at the foot of the plane
Monday, February 22, 2016 by David

science
How can I prepare a acid with a specific concentration and volume. Example how can I prepare o.5M of HCl
Monday, February 22, 2016 by adams

6th Grade Science
In the ____ temperatures can increase up to 1,700˚C.
Monday, February 22, 2016 by Cupcake :D

accelerated science
what is the energy level of visible light, infrared, and radio waves in joules?
Monday, February 22, 2016 by Anonymous

science
Why is fresh water considered a limited resource?
Monday, February 22, 2016 by briana

Science
In pea plants, yellow seeds are dominant over green seeds. Round peas are dominant over wrinkled peas. Cross two pea plants that are heyerozygous for both traits.
Monday, February 22, 2016 by Anonymous

Science
A plane flies 118 km at 15 degrees south of east and then flies 118 km at 35 degrees west of north. Find the magnitude and direction of the total displacement of the plane?
Monday, February 22, 2016 by Edlyn

Physical science
a balloon has a volume of 0.5 L at 20 degrees celsius. what will the volume be if the balloon heated to 150 degrees celsius? assume constant pressure and mass. I got 0.7218 L.
Sunday, February 21, 2016 by Emily

SCIENCE PLZ HELP
when are tides in earths oceans the highest? during the moons waning gibbous phase during the moons waxing gibbous phase when the moon is at the right angle of the sun when the sun, Earth, and moon are in a line.
Sunday, February 21, 2016 by K.CUndercoverNeedsHelpAndAlsoHelpsPeople

science
which term describes the main process in the water cycle
Sunday, February 21, 2016 by ginger

science
why is water a limited rescource
Sunday, February 21, 2016 by ginger

science
when whould electric current flow through a conductor
Sunday, February 21, 2016 by Anonymous

Science
If a cell undergoes mitosis every six hours, how many cells will there be in all after seven days?
Sunday, February 21, 2016 by Anonymous

Science
Expression for bernaulli theorem
Sunday, February 21, 2016 by Rahul

science
Express the value of time in s.I units 2hours 35 seconds I tried multiplying but gave me wrong answers and objectives are 7200 3600 9300 2100
Sunday, February 21, 2016 by kelvin

Science
What impact does storage of elastic energy have on the efficiency of hopping?
Sunday, February 21, 2016 by Mel

Science
There is generally more life found in the sunlit part of the ocean closer to the continents than there is in the open sea farther from the continents. Therefore, the open sea is sometimes called the blue dessert. Why is this? Thanks.
Sunday, February 21, 2016 by Geek Girl

Science - Characteristics of the Ocean Floor
If you could drop Mt. Everest (height:8848m) to the bottom of an ocean trench, would its summit(top) reach the level of the ocean's abyssal plains? Why or why not? Thanks.
Saturday, February 20, 2016 by Geek Girl

Science - Ms. Sue plz
Would you expect to find plant like organisms below 1,000 meters in the ocean? Why or why not? Thanks.
Saturday, February 20, 2016 by Geek Girl

PHYSICAL SCIENCE
Imagine two billiard balls on a pool table. Ball A has a mass of 2 kilograms and ball B has a mass of 3 kilograms. The initial velocity of ball A is 9 meters per second to the right, and the initial velocity of the ball B is 6 meters per second to the left. The final velocity ...
Saturday, February 20, 2016 by JCAINE

Science
If you could drop Mt. Everest (height: 8848meters) to the bottom of an ocean trench, would its summit (top) reach the level of the ocean's abyssal plains? Please help me with this question. Thanks. :D
Saturday, February 20, 2016 by Geek Girl

Science
I need an example or suggestion for a Controlled Experiment for a science presentation
Saturday, February 20, 2016 by Anonymous

Science
Are plant like organisms below 1,000 meters in the ocean? Thanks.
Saturday, February 20, 2016 by Anonymous

Science
A stone wirelesd at the rope 30cm long makes 10 complete revolution in 25 second
Saturday, February 20, 2016 by Abba

computer science
Assume a computer has the capacity to hold up to 4 memory modules, with each module containing 512M bytes. How many total bits are needed in the memory address?
Saturday, February 20, 2016 by moy

science
950ml of a gas at pressure of 1.5atm is compressed to 473ml. what is the new pressure of the gas
Saturday, February 20, 2016 by ladonna

science
freezing point of pure solvent remains constant whereas the freezing point of a solution continues to decrease with time
Saturday, February 20, 2016 by areen

Science
Al+(Cr2O7)2- = Al3+ + Cr3+ [al3+]=0.01M [(cr2o7)2-]= 0.1M [cr3+]=0.001M find the E cell if we add Naoh to each electrode until al(oh)3 precipitates pH=8 KPT of al(oh)3=5 * 10 -33 Eal=-1.66 V Ecr=1.33V
Saturday, February 20, 2016 by Lorela

general science
A car mass 500 kg accelerates 1m/s sqare the force due to eng is 600N the average frictional force is
Saturday, February 20, 2016 by velocity and motion

Earth science
Why didn't the early geologic time scale include the number of years ago that events happened?
Friday, February 19, 2016 by Sue

Science
The half-life of randon-222 is 8 days. What was the original mass if 6 grams remains after 24 days?
Friday, February 19, 2016 by Sarah

Physical Science
Suppose the jumbo jet of mass 30000 kg flies against an air resistance of 82000 N while the thrust of all four engines is 100000 N. Find the acceleration
Friday, February 19, 2016 by Ehhhh

Science
Actively dividing cells can be found in? meristems. xylem tissue. epidermal tissue. center of stems. phloem tissue. help
Friday, February 19, 2016 by Anonymous

science
which kind of reproductive structure is not within the fungi? is it anthers
Friday, February 19, 2016 by Anonymous

geography,life science, business and maths lit
What career can I use as an option after my matric??????
Friday, February 19, 2016 by granny

Earth Science
why didn't the early geologic time scale include the number of years ago that events happened?
Friday, February 19, 2016 by Sue

science
why didn't the early geologic time scale include the number of years ago that events happened?
Friday, February 19, 2016 by Sue

science
Iron is produced in a single displacement reaction with iron II cyanide and tin. How many grams of iron are produced when you use 1.98 g of tin?
Friday, February 19, 2016 by Siri

Science
Why are sedimentary rocks more useful than metamorphic or igneous rocks in establishing the relative ages of rock?
Friday, February 19, 2016 by Sue

Math
A science class planted a tree in the school courtyard that was 6 inches tall. It is growing 4 inches each week. Write a function rule for the height, h, of the tree based on the weeks, w, since it was planted. h = 6w + 4. h = 4w + 6. (MY ANSWER) h = 4w. h = 4w – 6.
Friday, February 19, 2016 by LOVE

science
3 Nitroglycerine is used as an explosive. The equation for the explosion reaction is: 4C3H5(NO3)3 ( l ) 12CO2 ( g) 1 10H2O ( l ) 1 6N2 ( g) 1 O2 ( g) a How many moles does the equation show for: i nitroglycerine? ii gas molecules produced? b How many moles of gas molecules are...
Friday, February 19, 2016 by Maya

science
why echo is weaker than original sound
Friday, February 19, 2016 by ayesha

science
You burn 6 grams of carbon in plenty of air: C ( s) + O2 ( g) = CO2 ( g) a What volume of gas will form (at rtp)? b What volume of oxygen will be used up?
Friday, February 19, 2016 by Maya

science
Why it is important to know the history of science in 300 words?
Friday, February 19, 2016 by deepak

Science
Does anyone know the answer to this? 2.50mL Fe =? atoms Fe, Dfe =7.87 g/mL
Thursday, February 18, 2016 by Popla

science
why did a portion of the table top get cold when Natasha placed her cold drink on the table
Thursday, February 18, 2016 by kyle

science
a banana turning brown when exposed to the air is an example of what
Thursday, February 18, 2016 by kyle

science
an ice cube, a glass of cold water, and a swimming pool are each exposed to the same amount of sunlight on a hot day. after five minutes, the ice cube is melted and the cold drink is two degrees warmer, but the temperature of the swimming pool remains unchanged. what is the ...
Thursday, February 18, 2016 by kyle

science
a blank property of matter describes an ability to change into different substances
Thursday, February 18, 2016 by kyle

science
a bananan turning brown when exposed to the air is an example of
Thursday, February 18, 2016 by kyle

science
an ice cube a glass of cold water in a
Thursday, February 18, 2016 by kyle

science
a 54-gram sample of an unknown material has a volume equal to 20cm3 what is the identity of the substance
Thursday, February 18, 2016 by kyle

science
write aprogram and flowchart to read anumber from 1-12 and print the name of the month
Thursday, February 18, 2016 by write aprogram and flowchart to read anumber from 1-12 and print the name of the month

Science
Can someone please check my answers? I would greatly appreciate it. Thanks! 1. Which of the following inner planets has virtually no atmosphere? a. Mercury*** b. Venus c. Mars d. Earth 2. Which of the following statements about the inner planets is true? a. They all have rings...
Thursday, February 18, 2016 by Blair

Computer Science
Create a Raptor Flowchart that calculates the amount a person would earn over a period of time if his or her salary were five cents the first day, ten cents the second day, and so on doubling each day. Your program should: 1. Request the number of days. 2. Display a table ...
Thursday, February 18, 2016 by Allison

science
If a ball that is freely falling has attained a velocity of 19.6 m/s after two seconds, what is its velocity five seconds later?
Thursday, February 18, 2016 by Anonymous

maths and science
A farmer sells eggs in trays.Each tray contains 30 eggs.a shopkeeper sells these eggs in dozens.If a shopkeeper needs 8 dozens a week,how many trays of eggs should he buy from the farmer?
Thursday, February 18, 2016 by mosese

physical science
a head ball of mass 600g is thrown vertically upwards from ground level and reaches the maximum height of 20metres.calculate the initial velocity of the ball
Thursday, February 18, 2016 by vinny

science
What volume of H2 gas, in mL, would be occupied by 0.00465 moles of H2 gas at a temperature of 0 °C and a pressure of 760 mmHg?
Thursday, February 18, 2016 by honest

MATHS LIT,GEO.HISTRY, LIFE SCIENCE
I DO NOT KNOW WHAT TO CHOOSE IN MY CAREER ?AS I DO THESE SUBJECTS CAN SOMEONE HELP ME WITH MY CAREER!
Thursday, February 18, 2016 by ZINTLE MBALISWANA

science
A feather is dropped on the moon from a height of 1.40meters.The acceleration of gravity on the moon is 1.67m/s^2.Determine the time for the feather to fall to the surface of the moon.
Thursday, February 18, 2016 by chris

science
47.25 L sample of nitrogen is determinedto contain 0.75 mole of nitrogen moles of provided presure remain the same?
Thursday, February 18, 2016 by nympha

science
47.25 L sample of nitrogen is determinedto contain 0.75 mole of nitrogen moles of provided presure remain the same?
Thursday, February 18, 2016 by Anonymous

science
Hcl is titrated against 5ml of sodium carbonate of strength 0.0133 then what should be the mean value of HCl added ?
Thursday, February 18, 2016 by Anonymous

Science
What might be the functions of the chemical additives in body washes?
Wednesday, February 17, 2016 by Timmy

science, chemistry
Calculate the final Volume of solution obtained if 100.0 mL of 12.0 M NaOH is diluted to 5.20M
Wednesday, February 17, 2016 by Amy

Science Please Help!!!
Which best describes a cave ecosystem? A) Plentiful food, widely varying temperature B) Plentiful food, constant temperature C) Very little food, widely varying temperature D) Very little food, constant temperature I think it's either C or D....maybe C??? Please help! (=
Wednesday, February 17, 2016 by Sammy

Earth science
A scientist wants to determine the age of a rock. The rock contains an index fossil and an ancient relative of a living organism. Which is more useful for dating the rock, and why? Answer: an ancient relative of a living organism would be more useful for dating the rock ...
Wednesday, February 17, 2016 by Sue

Science
2.)which of the following statements about the solar system's formation is true? a:the temperature was very cold. b:gravity pulled together a cloud of gas and dust. c:objects formed from the same materials. d:the planets formed at the same distance from the sun. B?
Wednesday, February 17, 2016 by #FreeGucci

Enriched science
What is the goal of synthetic biology? A. The goal of synthetic biology is to mimic living cells B. The goal of Synthetic biology is to generate new tissues to replace damage tissues C. The goal of synthetic biology is to engineer living cells to perform specific functions D. ...
Wednesday, February 17, 2016 by Rhyleigh

Enriched science
Engineers who are working to find alternative fuel sources hope to A. Reduce air pollution B. Use more fossil fuels C. Design microorganisms that will eat oil D. Increase the yeild of food crops
Wednesday, February 17, 2016 by Rhyleigh

Enriched science
Which of the following would be an engineering project that could help protect the planet? A. Finding a new landfill site B. Designing a better trash compactor C. Deciding which products can be recycled D. Growing microbes that eat oil
Wednesday, February 17, 2016 by Rhyleigh

Science
RNA is thought to have proceeded proteins and DNA, why? A. more types of RNA than DNA B. single stranded RNA is less complex than DNA Not sure if either are correct?
Wednesday, February 17, 2016 by sharon

Science
Sustained increase in the population that makes up all the trophic levels requires an increase in A. primary producers B. primary herbivores C. primary carnivores D. keystone predators
Wednesday, February 17, 2016 by sharon

Science
DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea
Wednesday, February 17, 2016 by sharon

Science
chlorine atoms have larger radii than fluorine A. True B. false I am unsure
Wednesday, February 17, 2016 by sharon

Science
Genetic Information is found where? A. nuclei B. ribosome I think A
Wednesday, February 17, 2016 by sharon

Science
key factor driving cellular differentiation in the body? A. rate of transcription B. cell nutrience C. expression of genetic coding D. chemical gradients in a cell environment I think A
Wednesday, February 17, 2016 by sharon

Science
Pepsin is... A. enzyme B. lipid C. carbohydrate D. nucleic acid I think A!
Wednesday, February 17, 2016 by sharon

Science
What cell stimulates immune cells to attack? A. Helper T cells B. Cytotoxic T cells
Wednesday, February 17, 2016 by sharon

Science
Bond that holds atoms together in a molecule are? A. radiation energy B. kinetic energy C. thermal energy D. potential energy I think B
Wednesday, February 17, 2016 by sharon

Science
Lifelong protection after exposure such as the chicken pox is which type of immunity A. Active immunity B. innate immunity I think B
Wednesday, February 17, 2016 by sharon

Science
function of smooth ER A. synthesis lipids B. form ribosomes C generate energy D phagocytose bacteria I think A
Wednesday, February 17, 2016 by sharon

Science
Which example is an example of natural selection A.prairie dogs build an underground tunnel B. fish omit odor to avoid sea lions C. cats with better nutrition play more D. lizards absorb vitamin D to help digest food. I think B
Wednesday, February 17, 2016 by sharon

Science Physics
A rope exerts a 274N force on an 80kg skier up along a hill inclined 12 degrees. A frictional force of 100N opposed the motion. If the skier starts from rest, what is her speed after travelling 100m?
Wednesday, February 17, 2016 by Yoda

SCIENCE
Indicate how to mix two of the first concentration 3.2 M hydrochloric acid solution and the second to 15% by weight and density 1.30Kg / L to obtain 2.5 L of hydrochloric acid solution in 4.2M concentration
Wednesday, February 17, 2016 by ATTILIA

SCIENCE
A nitric acid solution at 25% by weight has a density of 1.21 KG / L Calculate the volume needed to be taken to obtain 2 L of a 2.5 M solution of nitric acid
Wednesday, February 17, 2016 by ATTILIA

science
A chain link m/c having a blade of (330x52x6)mm on which steel wire is rotated of 4mm how much torque is reqd for amotor.
Wednesday, February 17, 2016 by atharva d gawande

science
construct a heating curve for a substance that is heated to 150 deg centigrade. The substance is originally solid at 35 deg c, melts at 75 deg c and boils at 126 dec c
Wednesday, February 17, 2016 by vidya

English
how do I explain how a monster might be used as a metaphor for science or scientific advances, and how could such a metaphor be considered social commentary about science?
Tuesday, February 16, 2016 by Alie

Science
The diagram below shows the structural formula and 3D model of the same substance. Which substance is represented by the diagram above? A. H2O ? B. OH C. H2O2 D. OH2 PLZ HELP ASAP @miss sue
Tuesday, February 16, 2016 by Anonymous

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