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February 14, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

Early childhood
integration of curriculum areas can be pictured in a weblike structure in which mathematics is always at tech center and science and other subjects are attached by radials
Tuesday, August 25, 2015 by Neat

science
solution A was prepared by dissolving 0.63g of HNO3 in 100cm3 solution. Solution B is a sodium calcium hydroxide solution of unknown concentration. state a balanced chemical equation for the reaction
Tuesday, August 25, 2015 by Zoe

Physical Science
A transparent object made of glass without any color (A) absorbs all frequencies of visible light and re-emits them from atom to atom through the object. (B) absorbs all frequencies of visible light and transforms the energy into thermal energy (C) has atoms or molecules whose...
Tuesday, August 25, 2015 by Loren

Science
A scientist is testing the effects of fertilizer on peanut production. He plants 4 peanut plants and applies a different amount of fertilizer to each plant. Two of the plants die. Can he conclude that the amounts of fertilizer used on those plants were lethal? What other ...
Tuesday, August 25, 2015 by Anonymous

Physical Science
33 A. If the woman is 2 meters in front of the mirror, how far behind the mirror will she see her image? B: Is this a real image or a virtual image? C: How could you prove your answer to B?
Tuesday, August 25, 2015 by Loren

Science study skills
What is the importance of questioning in the SQ3R system? 1.) Questioning helps you read the material quickly. 2.) Questioning keeps your brian actively trying to find answers while you are reading. 3.) Questioning helps you identify questions that will be on the test. 4.) ...
Tuesday, August 25, 2015 by Snoopy

Science study skills
What is the most effective way to begin studying a lesson? 1.) Make up questions about the lesson. 2.) Look at the headings and subheadings of the lesson to get an idea of what the lesson is about. 3.) Review the lesson that comes after it.] 4.) Look ahead to see if the ...
Tuesday, August 25, 2015 by Snoopy

science
A bolt of mass 0.3 kg falls from The ceiling of an elevator moving down with a uniform speed of 7m/s.It hits the floor of the elevator and does not rebound.What is the heat produced by the impact?g=9.8m/s to the power 2 .
Tuesday, August 25, 2015 by anirban maity

Science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system is an example of a process? A. Turning on the switch is a process. B. The conversation of ...
Tuesday, August 25, 2015 by Amber

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.The data is a qualitative observation*** B.The data is a quantitative observation C.The data is a prediction D.The data is a ...
Tuesday, August 25, 2015 by Anonymous

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
Tuesday, August 25, 2015 by Anonymous

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 ...
Tuesday, August 25, 2015 by Anonymous

Science
a wire of length 4m and radius 1 mm has a resistance of 1 ohm.what length of the wire of the same material at the same temperature and of radius 2 mm will also have a resistance of 1 ohm
Tuesday, August 25, 2015 by Idrees

BHEKISISA
ENGLISH.ISIZULU.LIFE SCIENCE. LIFE ORIENTATION.MATH LITERACY.HISTORY ND GEOGRAPHY. am doing grade 11 so has am doing this subject iwant to know which career i must task when i pass my matric plz help me
Monday, August 24, 2015 by NOBUHLE PORTIA MSANI

Science
do radioactive elements occur naturally on earth
Monday, August 24, 2015 by brooke

Science
does the air in our atmosphere contains elements that we breathe with every breath
Monday, August 24, 2015 by brooke

u.s. history
Use the quote below to answer the following question. “[T]hese Powers . . . are so distributed among the Legislative, Executive, and Judicial Branches, into which the general Government is arranged, that it can never be in danger of degenerating into a monarchy, an ...
Monday, August 24, 2015 by cj

Science
The lesion is located in the right thorax just lateral to the mid-saggital plane
Monday, August 24, 2015 by Luis

Science
How is 0.00069 written in scientific notation? A)69 x 10^–5 B)6.9 x 10^4 C)0.69 x 10^–3 D)6.9 x 10^–4 My Choice is A
Monday, August 24, 2015 by Trish

science
An ant travelled along the vector a whose magnitude is 10 meters and direction is 45 degree to horizontal and then moved along vector b whose magnitude is 9 meters and direction is 0 degree with horizontal . Find its displacement
Monday, August 24, 2015 by parveez

life science
Two breaking tubes,two drnking staws,clear lime water
Monday, August 24, 2015 by Anonymous

science
A combination of two prism one of flint &other of crown glass produces dispersion without deviation.The angle of the flint glass prism is 15degree . Calculate the angle of crown glass prism & the dispersion separation of red & violet rays an emergence from spectroscope.refra. ...
Monday, August 24, 2015 by apurv

Science
There can be several controlled variables. If an experiment is to be useful, only one variable at a time can be manipulated intentionally. All other variables must be controlled throughout all parts of the experiment. If more than one variable is altered, the results of an ...
Sunday, August 23, 2015 by anon

Computer science
use a modular approach and pseudo- code to design a suitable program to solve it. Allow the user to enter a series of temperatures in degrees Celsius (C) termi- nated by the input of −999. For each one, find the corresponding tempera- ture in degrees Fahrenheit (F). The ...
Sunday, August 23, 2015 by Poohboi

life science
what is the removal of trees without adequate replanting?
Sunday, August 23, 2015 by girly

University, subject science
What is the difference between plasmid and chromosomal DNA? What is Mutant bacteriophage?
Sunday, August 23, 2015 by Madihanoor

science
an automobile of mass 1800kg takes a turn of radius 270m. If the force on the tyres to maintain the motion along the curve is not to exceed 630n, the limiting speed of the vehicle assuming no banking will be
Sunday, August 23, 2015 by sk

Science
You have 75.0 mL of a 2.50 M solution of Na2CrO4 (aq). You also have 125 mL of a 2.15 M solution of AgNO3 (aq). Calculate the concentration of NO3 when the two solutions are added together.
Saturday, August 22, 2015 by John

Science
How to find the volume of the solvent that is added to a diluted solution.
Saturday, August 22, 2015 by Andreah

science
Hey im doing grade 11 at 2012 but I drop out at June but I have the results at March report.so how do I do to get a matric or finish school?
Friday, August 21, 2015 by mayekane

science`
When doing an experiment, it is important to follow all of the procedures EXCEPT ______________. Question 1 options: wearing protective goggles arranging and organizing the work space neatly understanding the meaning of the safety precautions using smaller beakers before using...
Friday, August 21, 2015 by sciene lab safety

Science
Give the scientific terminology for each discription 1The chemical synthesis process in plants in which CO2 plays a vital role 2Manure that comes from plants that are planted,but not harvested 3The name of the first step in the ostwald process
Friday, August 21, 2015 by Lusanda

science cbse school
6.66m/s2
Friday, August 21, 2015 by arti

Science
In a scientific experiment, facts, figures, and other evidence gathered through observations are called? A. Data(?) B. Manipulated Variables C. Responding Variables D. Laws
Thursday, August 20, 2015 by Anonymous

Science
I have 8 questions and 1 question in the end that I don't need help with. Identify possible variables in the following situations. What variables can affect the sprouting of a bean seed? I think (I didn't answer yet so I'll just go with what I think oh and these ...
Thursday, August 20, 2015 by anon

Life Science
determing whether expired air contains CO2. 1.Formulate hypothesis 2.Aim 3. a) idependent V, dependent and controlled variables 4. methods step by step 5. observation
Thursday, August 20, 2015 by Andrea

science
I need help with an acrostic poems or name fororn for lab sa
Thursday, August 20, 2015 by Anonymous

physical science
zinc electrode is placed in a solution of lead nitrate.write a balanced equation
Thursday, August 20, 2015 by mphukhe

Math (Probability)
In a random poll of science students, it was determined that 90% of students submitted tests before the deadline. In a random sample of 75, what is the probability that exactly 10 submitted after the deadline? What is the probability that less than 10 submitted after the ...
Wednesday, August 19, 2015 by Meghan

Science
Explain how you would design an experiment to text your hypothesis.it's about my pet birds.
Wednesday, August 19, 2015 by Jasiel

Science
Explain how you would design an experiment to text your hypothesis.
Wednesday, August 19, 2015 by Jasiel

Science
The combustion of a compound which contains only C and H yields 2.58 g of CO2 and 0.53 g of H2O. What is the empirical formula of the compound? Molar mass of CO2= 44.01 Molar mass of H20= 18.01 2.58g/44.01=0.586 mol CO2 .53g/18.01=.0294 mol H2O I Don't know where I went ...
Wednesday, August 19, 2015 by Jordan

math, science, everything else for 10th grader
If sec x = 17/8; verify that 3 - 4sin^2x /4cos^2x -3 = 3- tan^2x / 1-3tan^2x.. I have used x in place of theta. It isn't multiplication symbol.. ^2 means to the power 2. Pls help
Wednesday, August 19, 2015 by Agile

Science
4. Which geographic feature marks the last natural obstacle for Georgia's rivers on their way to the Atlantic Ocean? A) the Floridian Aquifer B) the Vally and Ridge region C) the fall line D) the Marshes of Glynn I got A but I'm not sure if it's right
Wednesday, August 19, 2015 by SarA

science
Experiments cannot validate hypotheses, only falsify them. The statement above can be restated in which of the following ways? A. Until disproved, an explanation for an observation is valid. B. Certain concepts cannot be subjected to direct experimentation. C. A hypothesis ...
Wednesday, August 19, 2015 by Mike

science
Which of the following nitrogenous bases is found exclusively in DNA? A. Adenine B. Cytosine C. Guanine D. Thymine i think it's D
Wednesday, August 19, 2015 by Mike

Science
what are the effects of oxygen on medal.
Tuesday, August 18, 2015 by Lily

science
Should designers of Olympic medals use oxygen (O) to make an Olympic medal?
Tuesday, August 18, 2015 by Science

Science
1. Scientists are not concerned with the human impact on the environment. True False 2. The environment in our lifetime is the same as it was hundreds of years ago. True False 3. Weather usually affects small areas True False 4. The atmosphere is one part of the environment ...
Tuesday, August 18, 2015 by Liz

science
An eagle is a carnivore. It MOST LIKELY gets the energy it needs to reproduce from A) oxygen. B) plants. C) the sun.--------- D) rodents.
Tuesday, August 18, 2015 by ttng

science
31. Two students collect information about the number of dandelions in a park. Based on their sampling, they estimate that there are 900 dandelions in the 300-square-meter city park. To determine the accuracy of their estimate, which of the following questions is necessary? A...
Monday, August 17, 2015 by solanch

science
Which of the following chemicals is insoluble in water? A. C6H6 {benzene) B. HCI (hydrochloric acid) C. NH3 (ammonia) D. NaHC03 (sodium bicarbonate)
Monday, August 17, 2015 by matt

Science
Consider 3 identical metal spheres A,B and C. A carries a charge of +5q b carries a charge of -q and C carries no net charge. Sphere A and B are touched together and then separated. C is then touched to A and separated from it.
Monday, August 17, 2015 by Debbie

physical science
the elevators in the landmark tower yokohama japan are among the fastest in the world. they accelerate upward at 3.125 m/s2 for 4.0 seconds to reach their final speed. if these elevators start at rest what is their final speed?
Monday, August 17, 2015 by Anonymous

Science
victoria discovered a new way to keep her hands warm on a cold day. what scientific attitude is this an example A. Creativity ********* B. skepticism C. Honesty D. Good ethics Please help thanks :)
Monday, August 17, 2015 by Priscilla

science
Giraffes have long necks that allow them to reach more food sources in their habitat. The long neck trait is an example of A. selection. B. adaptation. C. radiation. D. homology.
Sunday, August 16, 2015 by Mike

science
Darren says that he weighs 50 kg. Can you measure weight in kg?
Sunday, August 16, 2015 by Lilly

science
A 5.3-g bullet is fired horizontally into a 3.6-kg block of wood suspended by a rope from the ceiling. The block swings in an arc, rising 5.4 mm above its lowest position. The velocity of the bullet was:
Sunday, August 16, 2015 by haddad

science
A 64-kg woman stands on friction less level ice with a 0.9-kg stone at her feet. She kicks the stone with her foot so that she acquires a velocity of 9.2 cm/s in the forward direction. The speed acquired by the stone is:
Sunday, August 16, 2015 by haddad

science
A 6.4-N object is traveling at 9.9 m/s. It strikes an 2.1-N object, which is stationary. The two objects stick together. Their common final speed is:
Sunday, August 16, 2015 by haddad

science
A 3.4 kg-object moving at 9.9 m/s perpendicular to a wall rebounds from the wall at 4.5 m/s. The magnitude of the change in the momentum of the ball is:
Sunday, August 16, 2015 by haddad

science
A 3.00-g bullet traveling horizontally at 500 m/s hits a 4.8-kg wooden block, which is initially at rest on a smooth horizontal table. The bullet buries itself in the block without passing through. The speed of the block after the collision is:
Sunday, August 16, 2015 by haddad

Physical science
Ball A attracts B and repels C. Ball D attracts B and has no effect on E. A negatively charged rod attracts both A and E. What are the charges,if any,on each ball?
Saturday, August 15, 2015 by Beauty

Life science
Explain the scientific interpretation of the fossils found in the cradle of humankind.
Saturday, August 15, 2015 by Itumeleng

Science
How does water acts as an insulator and a shock absorber?
Saturday, August 15, 2015 by @@@Kee

Hwiti High School
Which career path i can follow with the following subjects:geography,history,maths literacy,life science,english,sepedi ans life orientation?
Thursday, August 13, 2015 by Mmalekgwathane

Science
What is the difference between a scientific theory and a scientific law? A. A scientific theory describes a pattern of observations, while a scientific law is an educated guess based on observation. B. A scientific theory is based on a few experiments, while a scientific law ...
Thursday, August 13, 2015 by Amber

Math
In a science competition with ten problems, a student gets 5 points for a correct answer and loses 2 points for an incorrect answer. If Alice answered every problem and her score was 29, how many correct answers did she have?
Wednesday, August 12, 2015 by Anon

Algebra
In a science competition with ten problems, a student gets 5 points for a correct answer and loses 2 points for an incorrect answer. If Alice answered every problem and her score was 29, how many correct answers did she have? i'm thinking you have to set up an equation but...
Wednesday, August 12, 2015 by Yomna

Physical Science- Atomic Structure
An electron jumps from energy level 1 to energy level 2 by absorbing a photon of energy 8 eV. What is the most likely energy of the photon that will be emitted by the electron when it moves back down to energy level 1? 2 eV 4 eV 8 eV 12 eV
Wednesday, August 12, 2015 by ash

science
what are the different daily observations in seed germination. What are the factors and its effect on germination? Data Chart: Cup #1 Seeds with water and sunlight Cup #2 Seeds with water and no sunlight Cup #3 Seeds with sunlight and no water OBSERVATION Cup #1 / Cup #2/ Cup...
Wednesday, August 12, 2015 by Marla

science
C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in water to make 100ml of ...
Wednesday, August 12, 2015 by akshay

phyiscal science
calculate the height a block of ice at -25 deg C must be dropped in order to completely melt on impact. No air resistance and all energy goes into melting the ice.
Tuesday, August 11, 2015 by ja

nsikayethu secondary comprehensive school
physical science (chemistry).place them in order Which liquid will evaporates faster between ethanol, nail porish remover, methylated spirits and water
Tuesday, August 11, 2015 by snenhlanhla

Science
Having trouble with the independent and dependent variable in an if then statement. "If root growth is related to gravity, then roots will always turn toward the earth regardless of a seed's orientation."
Monday, August 10, 2015 by Brandi

lot mashiane secondry school
if I choose maths literacy, history, geography and life science which job I'd related to this subject
Monday, August 10, 2015 by tshiamo

science
Name the elements present in Sulphuric acid?
Monday, August 10, 2015 by Raina

engineering physics 1-science
A crate of mass m(=32 kg) rides on the bed of a truck attached by a cord to the back of the cab . The cord can withstand a maximum tension of 68N before breaking. Neglecting friction between the crate and the truck bed, find the maximum acceleration the truck can have before ...
Sunday, August 9, 2015 by Endes Nalabaw

science
a body is pulled towards the west by the force of 10N making an angle 30 degree with the south. What are the magnitude of the south and west direction component of the force?
Sunday, August 9, 2015 by tariq hassan

science
Whar are two longest wavelength in frequency 1kghz and 200kghz
Saturday, August 8, 2015 by aman

Science
Balance this equation using oxidation method:I2+HNO3---->HIO3+NO2+H2O
Saturday, August 8, 2015 by Sadiya

integrated science
Why was NaOH used in an Biuret test to run a experiment
Thursday, August 6, 2015 by rajeana

science
A hawk flies in a horizontal arc of radius 12.0 m at a constant speed of 5.4 m/s. It continues to fly along the same horizontal arc but increases its speed at the rate of 2.8 m/s2. Find the acceleration magnitude under these conditions.
Thursday, August 6, 2015 by ahmad

science
A straight wire with a length of 0,20m move at a constant speed of 3,3m.s at right angle to a magnetic field of flux density 0,,15T..calculate the emf induced across the ends of the wire?
Thursday, August 6, 2015 by KAYDO

DPS sub: science ( chemistry)
an element 'x' react with water to form a solution which turns phenolphthalein indicator pink .The element 'x' is most likely a) sulphur b) sodium c) carbon d) silicon
Thursday, August 6, 2015 by kristi

management science
A company manufacture two products x snd y by means of two processes A and B .The maxinum capacity of processes A is 1750hours snd of process B 400.each unit of product X require 3 hours in A and 2hours in B while each unit of product Y requires 1 hour in A and 4 hours in B ....
Thursday, August 6, 2015 by yanga

science
a family wants to begin saving for s trip to paris the trip is planned for three years from now and the family wants to accumulate one million shilling for the trip.if twelve deposit are made quartely to an account which earns interest at the rate of 8 percent per year ...
Thursday, August 6, 2015 by yanga

Physical Science
Four forces of 10N,8N,6N and 4N act at the same point of an object on bearing 0 degrees,90 degrees,135 degrees and 270 degrees respectively
Wednesday, August 5, 2015 by kenanao Itumeleng

science
calculate the osmotic pressure at 18.5 degree celcuis of a suspension containing 30g/L of solid particles. each particle weighs 10^-9g.
Wednesday, August 5, 2015 by johnson

science
The scientist came to the conclusion that the hypothesis was incorrect. Why is the scientist's conclusion flawed
Tuesday, August 4, 2015 by Anonymous

science
The scientist came to the conclusion that the hypothesis was incorrect. Why is the scientist's conclusion flawed
Tuesday, August 4, 2015 by Anonymous

Science
If an experiment disproves a scientist's hypothesis, what should the scientist do next?
Tuesday, August 4, 2015 by Anonymous

Science
What type of scientific thinking did Wegner employ to develop his theory
Tuesday, August 4, 2015 by Anonymous

NURSING ASAP
Is nursing considered a a science major because I'm taking this course called "CHEM 1001 Chemistry and the World Around Us?" and I studying nursing in college. Please be honest. Thank you! :)
Monday, August 3, 2015 by Sam

life science
At high altitude the atmospheric pressure is lower and the air is less dense than at low altitude.this means that at high altitude there is less oxygen available for gaseous exchange thus gas exchange becomes less efficient. what conclusion can be made?what will happen to the ...
Monday, August 3, 2015 by merissa

life science
Investigation to determine whether expired air contains carbon dioxide how should state the method,step by step for the experiment
Monday, August 3, 2015 by john

Life science
Why are thesa fossils important discoveries?
Monday, August 3, 2015 by Eunice

science
what is the farenheit celsius kelvin of 300 ml of coffee . ?
Saturday, August 1, 2015 by Anonymous

Science
The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated sugar 3/4 cup packed brown sugar 1 teaspoon ...
Saturday, August 1, 2015 by Dora

science
what is heat?
Saturday, August 1, 2015 by dty

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