Monday
August 31, 2015

Homework Help: Science

Branches of Science

Recent Science Questions

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

maths literacy,life science,geography,agricultural science,setswana,english and life orientation
what carrier can i achieve with my subjects or what can learn with my subjects?
Tuesday, August 11, 2015 by Rebaone Darlinton

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

Science and technology
My brother and sister like to fiddle with my personal stuffs in my bedroom and now i have a box with a hinge that i want to modify in such a way that it will warn me if anybody opens it without my permission:-O:-O:-O:-O #very very desparate
Tuesday, August 4, 2015 by Thandolwethu

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

maths literacy,life science,agriculture,history
hi guys i would like you to help with this quation, I am doing grade11 and doing the above subjects .I am wodering what should i major in at varsity something intresting.
Friday, July 31, 2015 by Anonymous

Science
The atmospheres of the planets in our solar system differ in their physical compositions. Which planet would you expect to have the thickest atmosphere? a planet with a hot atmosphere and strong gravity a planet with a cold atmosphere and strong gravity a planet with a cold ...
Thursday, July 30, 2015 by Nour

Science
The atmospheres of the planets in our solar system differ in their physical compositions. Which planet would you expect to have the thickest atmosphere? a planet with a hot atmosphere and strong gravity a planet with a cold atmosphere and strong gravity a planet with a cold ...
Thursday, July 30, 2015 by Nour

Computer Science
public class PrimeNumbers { public static void main(String[] args) { int x = 100; for(int i=2; i <= x; i++) { if(i%2==0) System.out.println("notprime")​; System.out.println(i) ; if(i%1==1) System.out.println("prime"); } }
Thursday, July 30, 2015 by Jake

Science
1.A lift weighting 1000kg is moving upwards with an acceleration of 1m/s^2.The tension in the supporting cable is (a)980N (b)10800N (c)9800N (d)8800N 2.A person of mass 60kg is inside a lift of mass 940kg and presses the button on control panel.The starts moving upwards with ...
Thursday, July 30, 2015 by Diwije

Computer Science
I got an assignment to write all prime numbers up to 100 in java. This is what I've got: public class PrimeNumbers { public static void main(String[] args) { int x ; for(int i=1;i<x;i++); { if(x%i==0) return false; else if for(int i=1;i<x;i++) { if(n%i==1) return ...
Thursday, July 30, 2015 by Jake

science
locate the position of the centre of mass of a system of particles of mass m1=1kg,m2=2kg and m3=3kg situated at the corner of an equilateral triangle of angle 60degres and side 1m
Thursday, July 30, 2015 by keegan

science
How are moon observations from space different from moon observations made on Earth? I think there is no deifference.
Wednesday, July 29, 2015 by Nour

Science
{1}Discuss the parts of typical alimentary canal of multicellular organisms. {2}State the action of following enzyme in the process of digestion (a)Salivary amylase (b)Pepsin (c)Pancreatic enzyme (d)Trypsin (e)Lipase
Wednesday, July 29, 2015 by Diwije

Science
Consider a car moving along a straight horizontal road with a speed of 72km/h.If the coefficient of static friction between the tyres and the road is 0.5,the shortest distance in which the car can be stopped is(taking g=10m/s^2) (a)30m (b)40m (c)72m (d)20m
Wednesday, July 29, 2015 by Diwije

Maths,history,andriculture,life science
What my career if i'm doing this subject maths,life scienc,history,agriculture
Wednesday, July 29, 2015 by Lusanda

science
The potential difference measured across a coil is 20 V when a direct current of 2 A is passed through it. With an alternating current of 2 A at 40 Hz, the p.d. across the coil is 140 V. If the coil is connected to a 230 V, 50 Hz supply, calculate: (a) the current; (b) the ...
Wednesday, July 29, 2015 by mpho

Science
Minerals make up most of the rocks on Earth's surface. What are three changes that can cause minerals to form by metamorphism? pressure, temperature, melting temperature, melting, physical makeup temperature, pressure, chemical makeup pressure, physical makeup, melting I ...
Tuesday, July 28, 2015 by Nour

science
water has a density of 1.0 g/ml, and a test liquid has a density of 1.1 g/ml. If you pour equal portions of the two liquids into a cup,what will happen(assuming that the substance do not mix or create a chemical reaction
Tuesday, July 28, 2015 by earica

science
Florida was once part of Gondwana, which was a supercontinent that later divided into Africa and South America. Which statement best describes this process? Africa and South America go through cycles of dividing and colliding. The continents have been moving throughout Earth&#...
Tuesday, July 28, 2015 by Nour

science
what do yo mean by 'ISA'relationship? explain showing its use in E-R model.
Tuesday, July 28, 2015 by nakul

science
Lamont has a dark container. He knows that the container has a mass of 2.0 g when it is empty. He cannot see inside the container. However, he is able to use a balance to determine that the container has a mass of 2.7 g. What can Lamont conclude about the container? It ...
Monday, July 27, 2015 by Nour

science
Amanda is holding a compass and notices that the north pole of the compass points toward the north pole of the Earth. She is confused because she knows from her science classes that the north poles of two magnets will repel each other. How can she explain this phenomenon? The ...
Monday, July 27, 2015 by Nour

science
A boy is riding a skateboard. Why does the skateboard have the ability to do work? because it can slow down because the force applied by the rider acts in the opposite direction as the motion of the skateboard because it can change direction because the force applied by the ...
Sunday, July 26, 2015 by Nour

science
cite samples of lesson plan for elementary students
Sunday, July 26, 2015 by tina

PHI 103
25. <21{8[1(07)95]}> Political science professor: Many people insist that the Internet is revolutionizing the political process. They argue that Internet debates and online political polls and chat rooms give people greater access to political information. And they’...
Saturday, July 25, 2015 by Anonymous

Maths literacy,sepedi,life science,Lo,english,geography and agriculture
Which job can i get when i studied those subjects?
Friday, July 24, 2015 by Makoma

science: chemistry
How many moles of NaOH must be added to 1.0 L of 2.6 M HC3H5O3 to produce a solution buffered at each pH? 1)pH= 4.28 2)pH=pKa
Thursday, July 23, 2015 by Julie

Maths literacy and life science
Can i become an pathologist
Thursday, July 23, 2015 by Bonolo

science: chemistry
A buffered solution is made by adding 47.4 g C2H5NH3Cl to 1.00 L of a 0.68 M solution of C2H5NH2. Calculate the pH of the final solution. (Assume no volume change. Assume that all solutions are at 25°C.)
Thursday, July 23, 2015 by Julie

History life science geograhy maths literacy and languages
Which career should i follow? Please help
Thursday, July 23, 2015 by Davido setshele

science
satlelite that monitor the ozoone hole
Tuesday, July 21, 2015 by xious

Science
36kg of some material undergoes a process in a piston-cylinder apparatus starting with an initial volume of .057m^3 and pressure of 680kPa. The final volume is twice the initial. Compute the work done by the substance for the following processes: (a) Pressure times volume is ...
Monday, July 20, 2015 by J.T.

Science
Final of geography
Monday, July 20, 2015 by Anonymous

math lictracy,life science,geography,tourism,isizulu,english,life orantation.
please tell me the job i can do while im study that subjects?
Monday, July 20, 2015 by thembekile zulu

English
We had to read Kennedy's Inaugural Speech: Vice President Johnson, Mr. Speaker, Mr. Chief Justice, President Eisenhower, Vice president Nixon, President Truman, Reverend Clergy, fellow citizens: We observe today not a victory of party but a celebration of freedom--...
Monday, July 20, 2015 by Grace

Science Thermochemistry
How much heat would be liberated by the combustion of 2.5 moles of C. Delta Hc C=94600 cal
Sunday, July 19, 2015 by Bryan Molina

life science
what features do African ape share with humans
Sunday, July 19, 2015 by xonolo

science, chemistry
"You run out of brown sugar and decide to use only granulated sugar instead. The cookies come out much thinner than usual. Design a controlled experiment to test your hypothesis *, describing how you would interpret your results. Please limit your response to one ...
Sunday, July 19, 2015 by llau

science
You run out of brown sugar and decide to use 1.5 cups granulated sugar instead. The cookies come out much thinner than usual. Design a controlled experiment to test your hypothesis, describing how you would interpret your results. Please limit your response to one paragraph.
Sunday, July 19, 2015 by llau

blue bells model school
Science physics A ball A moving with kinetic energy E makes a head on elastic collision with a stationary ball with mass n times that as A . What is the potential enery stored during collision ?
Sunday, July 19, 2015 by kanika

science
The focal length of a concave mirror, that produces four times larger real image of an object placed at 5 cm distance from the mirror, is------
Sunday, July 19, 2015 by sanjay

science
The focal length of a concave mirror, that produces four times larger real image of an object placed at 5 cm distance from the mirror, is------
Saturday, July 18, 2015 by sanjay

science
. If you dissolve 70.0g of KNO3 at a temperature of 60.0°C, would the resulting solution be unsaturated, saturated, or supersaturated?
Friday, July 17, 2015 by joulie

science
How food travels through various compartment
Friday, July 17, 2015 by neha

science
How food travels through various compartments
Friday, July 17, 2015 by neha

science
A concave mirror having a radius of curvature 40 cm is placed in front of an illuminated point source at a distance of 30 cm from it.Find the location of the image.
Thursday, July 16, 2015 by tiger

math
In a science experiment, the temperature of a glass of water rose 18.24 degrees after six hours. If the temperature rose the same number of degrees per hour, then how many degrees did the water increase per hour?
Thursday, July 16, 2015 by veronica

science
write aout chemistry
Thursday, July 16, 2015 by bhawana bhusal

rearabilwe
i am doing Economics,life science, maths lit, agriculture,english,lo and Setswana i want to know what careers are possible with this subjects
Thursday, July 16, 2015 by BOPHELO

Physical Science
A hot iron ball is dropped into 200.0 g of cooler water. The water temperature increases by +2.0°C and the temperature of the ball decreases by -18.6°C. What is the mass of the iron ball?
Wednesday, July 15, 2015 by elise

science,
A force of 4400 N is exerted on a piston that has an area of 0.020 m2. What force is exerted on a second piston that has an area of 0.040 m2?
Wednesday, July 15, 2015 by cristopher

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 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. Next>>

Members