Saturday
July 30, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

Science(physics)
A spring 20cm long is stretched to 25cm by a load of 50N. What will be its length when stretched by 100N assuming that the elastic limit is not reached? I want the answer abd solving to this question and also the formula for young modulus of elasticity
Tuesday, January 19, 2016 by Rachel

health
what education is required for dentist? Do i put answer like math, science what certain certificate do you need for this job? Do i put Bachelor's Degree?
Tuesday, January 19, 2016 by miyabi

History,life science,maths lit and geography
I wanna knw if ican become a FIRE FIGHTER with dic sub
Monday, January 18, 2016 by Bono

Science
The length of an aluminium bar of lenth 80cm increase by 1mm on heating. What is the final temperature of the bar if it was initially at temperature 20°C? ( given: coefficient of linear expansion of aluminium = 25×10-6/° C)
Monday, January 18, 2016 by Chanchal

Science
The speed of light in a plastic material is 1.4 x 10^8. What is the index of refraction of the material?
Monday, January 18, 2016 by Jerome

Science
Why are gender roles considered socially constructed, according to the text? (Points : 1)
Sunday, January 17, 2016 by Anonymous

philosophy
Russell is arguing that philosophy is valuable. You'll want to think about his argument using his own key ideas: •How does he think philosophy is different from science? •Does he think philosophy is different from science in a good or bad sense, like one is ...
Sunday, January 17, 2016 by Morgan

Science Help
What happens to the density of the air in the balloon as it is heated?
Sunday, January 17, 2016 by Sam

Maths lit, geography ,agricultural science. Life science
Hi iam a grade 11 learner at khumbula senior high school , i want to know which career path do i take with this subjects ?
Sunday, January 17, 2016 by Nothando C

Maths lit, geography ,agricultural science. Life science
Hi iam a grade 11 learner at khumbula senior high school , i want to know which career path do i take with this subjects ?
Sunday, January 17, 2016 by Nothando chibi

math literacy,english,afrikaans,l.o,l.s,bus
Can you become a social worker with the following subjects maths literacy, english,afrikaans,life orientation,life science,business and history are can you tell u what can you become with that subjects above
Sunday, January 17, 2016 by prisca munsha

science
a runner travels 3 kilometers in 30 minutes. what is the speed of the runner
Sunday, January 17, 2016 by Josephine

maths literacy,life science,history,agricultural science
people can you plz help me what can I study after matric,anyone who could help me?
Sunday, January 17, 2016 by loyiso

science
A cannon, mass 500kg, fires a bullet, mass 100kg, horizontally so that the velocity of the bullet is 100m.s^-1 to the right. calculate the recoil velocity of the bullet
Sunday, January 17, 2016 by anonymous

physical science
what will the velocity be if the momentum is 60000 kg m/s and the mass of the car is 2000kg
Sunday, January 17, 2016 by bandile

science
A gas at atmospheric pressure is compressed isothermally to one third of its volume. What is final pressure?
Sunday, January 17, 2016 by Anjali

computer science visual basic
I need help Application: Create a GeneratedNumber application that stores in an array with indexes 1 through 100 numbers generated by the index values when Generate is clicked. Generate the number to be stored at each index by summing the index and it's individual digits. ...
Saturday, January 16, 2016 by Ace

Science
A boy moves on a skateboard at a constant velocity of 3m.s . The combined mass of the boy and the skateboard is 40kg. He catches a bag of flour of mass 5kg that is thrown to him horizontally at 6m.s . Determine the velocity of the boy after catching the bag of flour.
Saturday, January 16, 2016 by N

maths literacy, history, grography, life science
What are careers of general geography?
Saturday, January 16, 2016 by kabelo

earth science
During the early Paleozoic era, South America, Africa, Australia, Antarctica, India, and perhaps China comprised the vast southern continent of _____. (1 point) Europe Gondwana Laurasia Pangaea
Friday, January 15, 2016 by freddy

Science (physics)
How does temperature affect the gas in a balloon?
Friday, January 15, 2016 by Abby

SCIENCE HELP PLS
The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation for this event? The air pressure in that section of Earth’s atmosphere decreased. The air pressure in that section of Earth’s ...
Friday, January 15, 2016 by Oscar

science
The following forces act on a body:f1=5,3N upwards;f2=2,2N upwards and f3=10,7N downwards.determine the resultant of the three forces using vector addition
Friday, January 15, 2016 by pleasure

Science
a simple machine that only changes the direction of the applied force?
Friday, January 15, 2016 by Meek

Pure Maths, Life Science, CAT, Business Studies
I would like to know that with these subjects what can I study at University , so can you please help me with that?
Friday, January 15, 2016 by Sihle Grati♥

Maths literacy and tourism,life science,geography
Hi help me I do not know what job I can do with these subjects
Friday, January 15, 2016 by Owami Dube/zikhali

science
On heating 10grams copper sulphate crystals (CuSO4.5H2O),6.4 grams anhydrous sulphate was left .Find the value of X .
Friday, January 15, 2016 by Kishan singh

science
what wt. of hno3 is required to make 1lt. if 2N solution to be used as an oxidising agent 3cu+8HNO3=3cuno3+2NO+4H2O
Friday, January 15, 2016 by anil

Math literacy, Geography, Life science, Agriculture
Which career path can i follow with the subject above
Friday, January 15, 2016 by Tekanyo

science
I really need help, I don't understand the question from my science assignment. If anyone is available that would be great.
Friday, January 15, 2016 by panda kahindo

science
How much energy would be required to raise the temperature of 1.25g of water from 17 to 31 degree celsius.
Friday, January 15, 2016 by panda kahindo

Science help please.....
What happens to the density of the air in the balloon as it is heated? Also, based on this question.... What would be the Independent variable, Depended Variable, controlled Variab
Thursday, January 14, 2016 by Diana

science
which of the following is a constant, or control variable, in this experiment?
Thursday, January 14, 2016 by Brooke

science
Does carbon dioxide or water have a higher boiling point and why?
Thursday, January 14, 2016 by Kelley

Science
Without this system in the body, you would get really sick because toxins and waste would build up? (A) Cardiovascular (B) Excretory (C) Integumentary (D) Muscular I think its A, I really need this answered.
Thursday, January 14, 2016 by I need help

Science
What will happen when the sun is exposed to oxygen
Thursday, January 14, 2016 by TRYSYENS

science
Na+H2o->NaOH+H2
Thursday, January 14, 2016 by Mirale .A.Dayen.

Science
Which of the following determines the type of biome classification that will be made for a particular region? Climate Size Mineral deposits Number of human settlements Think about how the amount of energy changes as you move stepwise from producers to primary consumers to ...
Thursday, January 14, 2016 by Abby

Science
Which of the following can be used to explain why fossils of the same kind of organisms can be found in different regions of the world? Biogeography Adaptation Continental drif Dispersal Which of the following would best explain why a species of wildflower native to ...
Thursday, January 14, 2016 by Abby

Science
Certain seismic waves travel as.. A) electromagnetic and transverse waves. B) visible light and longitudinal waves. C) longitudinal and transverse waves. D) compression and visible light waves. I have no idea I never learned this:(
Thursday, January 14, 2016 by Anon

Science
When the energy of a light wave is transferred to a particle and causes it to vibrate and generate heat, the energy of the light wave is.. A) absorbed B) reflected C) refracted D) transmitted D?
Thursday, January 14, 2016 by Anon

science
When_____forces act on an object, they cause the object to move. A. Balanced B. Unbalanced C. friction D net B?
Thursday, January 14, 2016 by Amber

science
Which direction will the box move in the diagram below? (Its a square in the middle and it has a long arrow pointing to it on the left side which is 5 N and then on the right side theirs a short arrow pointing to it which is 3 N) A. It will move to the left. B. It will move to...
Thursday, January 14, 2016 by Amber

physical science
When will the resultant of the two vectors be at a maximum?
Thursday, January 14, 2016 by maliviwe

Science
Hi if you know about static electricity can you explain how lightning strikes form? Can you think about when lightning occurs to formulate your answer to my question please. Thank you so much!!!
Thursday, January 14, 2016 by Rosey

Physical science and math
2a^2*3a^3*b^0
Thursday, January 14, 2016 by Sindiswa

Physical science and math
2x^2y.4x^4y^3/6x^6y^6
Thursday, January 14, 2016 by Sindiswa

Science HELP
Placental mammals develop _______ A) In an egg laid in water B) A pouch of their mother's body C) Inside the mother's body**** D) Inside an amniotic egg
Thursday, January 14, 2016 by Miranda Lambert

Math literacy,Life science,Geography and Tourism
Im a grade ten learner and ii wud really like to know,uhm which careers will this subjects give me..im confused
Thursday, January 14, 2016 by Makgotso

Science
Two forces of 60N and 80N act simultaneously at a point dertermine their resultant by using tail to head method
Thursday, January 14, 2016 by Machanics (forces)

Maths,Geography,life science
I am a grade 11 learner doing maths,life science,geography . What causes do my subjects fit
Thursday, January 14, 2016 by Ntando

Maths,Geography,life science
Um a grade 11 learner doing maths,life science,geography . What causes do my subjects fit
Thursday, January 14, 2016 by Ntando

science
A 10 ohms, 8 ohms, and 5 ohms resistor connected in series to a Volts source. Find the current in each resistor.
Thursday, January 14, 2016 by Anonymous

Science
Which piece of children's play ground equipment could be used to model and explain the movement of matter in the biosphere? Slide Merry-go-round Swing Seesaw
Thursday, January 14, 2016 by Abby

Science
State how matter moves through the biosphere. State how energy moves through the biosphere. Explain each statement using examples to illustrate your explanation.
Thursday, January 14, 2016 by Abby

Science
What does the term adaption mean? How does adaption explain the patterns of distribution of plant and animal species in the world?
Thursday, January 14, 2016 by Abby

Science
Which of the following can be expected to occur as climate change continues on Earth? Decreased meltimg of sea ice Decreased migration of pests and pathogens Increased freshwater water sources Increased coastal flooding Is it A?
Thursday, January 14, 2016 by Abby

Science
What happens to the density of the air in the balloon as it is heated? Also, based on this question.... What would be the Independent variable, Depended Variable, controlled Variable...
Wednesday, January 13, 2016 by Diana

Science help....
What happens to the density of the air in the balloon as it is heated?
Wednesday, January 13, 2016 by Diana

science help
An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is brighter than the second star. Which of the following is a valid conclusion about the first star? It is larger than the second star. It is smaller than the second star. It is ...
Wednesday, January 13, 2016 by Oscar

science help
When nuclear fusion begins, what can be said about the internal processes within that star? Atoms in the star begin to split. Atoms in the star begin to combine. The star is turned into a nebula. The star is turned into a blue giant. is it b
Wednesday, January 13, 2016 by Oscar

science help
A student did an experiment with two identical plants, Plant 1 and Plant 2. About 10 mL fertilizer was added to Plant 1. About 200 mL of water was added to each plant every day. The height of the plants was recorded over a period of 5 weeks in the table shown below. Week ...
Wednesday, January 13, 2016 by Oscar

science help PLS
Scientists earlier believed that the lowest measurable temperature is the freezing point of ice. However, modern scientists believe that temperatures below the freezing point of ice can also exist. What best accounts for these different opinions? scientists propose ...
Wednesday, January 13, 2016 by Oscar

science help
Two scientists did the same experiment but arrived at different results. The scientists most likely did not have accurate data and information misunderstand each other's interpretations belong to different backgrounds did not have instruments to take accurate measurements ...
Wednesday, January 13, 2016 by Oscar

Life science,geography,business and maths literacy
Am in grade 10 and i dont know what to study for at vasity
Wednesday, January 13, 2016 by Nompumelelo baloyi

SCIENCEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
1. The current atomic model would be revised if (1 point) better microscopes were being used to study its structure. better microscopes are invented in the future. new information about an atom’s structure is discovered. a new element is discovered in the future. 2. ...
Wednesday, January 13, 2016 by CUPCAKE HELP

Science
1. In the western U.S., ranchers aggressively killed wolves because they posed a threat to their cattle. As the wolf population declined, the deer population began increasing. As a result, the surrounding forest ecosystems experienced increasing damage. The large number of ...
Wednesday, January 13, 2016 by Skyler

Science
which of the following is an example of a cyclic behavior that is seasonal? a. running from predators b. searching for water c. hunting at night d. migrating for warmth** I think its d
Wednesday, January 13, 2016 by Alex

Science
can you help me in mater and energy
Wednesday, January 13, 2016 by Mariah

Geography,maths literecy,life-science,agriculture,LO,sepedi and english
Which career can suit me?
Wednesday, January 13, 2016 by Peter

Science
Suppose you have a 50.0g sample of ice at -30.0 C. How many joules of heat energy are needed to heat the ice to 0.0 C? How many joules of heat energy are needed to melt the ice? I do not know how to set either of these up.
Wednesday, January 13, 2016 by Mary

Science
How to balance reaction of solid calcium carbide (CaC2) with excess water to form acetylene gas (C2H2) and solid calcium hydroxide?
Wednesday, January 13, 2016 by Mary

Physical Science
What force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2? A. 0.25 N B. 49 N C. 196 N D. 748 N ___________________________________ I said 49N because F = MxA. Am I correct?
Tuesday, January 12, 2016 by Vanessa B

Science
1.What information would a scientist need to discover whether a disorder had a genetic cause, an environmental cause, or a combination of the two? 2.How do mutations affect an organism? Why can some mutations have no effect? 3.Which of these traits or behaviors is most likely ...
Tuesday, January 12, 2016 by Steph

science
What does the statement "the properties of salt are different from the properties of the elements that go into making them" mean?
Tuesday, January 12, 2016 by emy

Science
What information would a scientist need to discover whether a disorder had a genetic cause, an environmental cause, or a combination of the two?
Tuesday, January 12, 2016 by Dora_the_nerd

science
What information would a scientist need to discover whether a disorder had a genetic cause, an environmental cause, or a combination of the two?
Tuesday, January 12, 2016 by Dora_the_nerd

Science
Can someone help me with this, at least help by explaining a bit what is going on? question: What is going on in the diagram? Picture: It's a boat floating on water, but another one on the ocean floor. A. the waves are pointing down to the boat that is on the floor and C. ...
Tuesday, January 12, 2016 by Kitty~

math
Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?
Tuesday, January 12, 2016 by Riley

Science
My granddaughter has to do a project about a product she would create and test we've decided on the safetyof white paper napkins vs dyed ones I don't know where to begin please help
Tuesday, January 12, 2016 by Kay

Child Development
I need help finding a learning experience for science/ sensory activity. The age is 3 years old.
Tuesday, January 12, 2016 by Anonymous

science
An object of mass 0.5kg is rotated in horizontal circle by a string of length 1m,the maximum tension in the string before it breaks is 50N.What is the greatest number of revolution per second of the object?
Tuesday, January 12, 2016 by MAGOA

Science
The hypothesis is tested and found to be correct. Define a problem Observe the problem Hypothesis becomes a theory*** Make a prediction
Monday, January 11, 2016 by Kaai97

Science
This is a critical part of the process that verifies that the predicted outcome is valid. Test the hypothesis*** Make a prediction Hypothesis becomes a theory Observe the problem
Monday, January 11, 2016 by Kaai97

Science
This step includes recording data, taking photos, and coordinating information. Make a hypothesis Make a prediction Observe the problem*** Define a problem
Monday, January 11, 2016 by Kaai97

Science
The science team uses information to suggest the main outcome of the hypothesis. Make a Prediction*** Test the hypothesis Observe the problem Define a problem
Monday, January 11, 2016 by Kaai97

Science
Select the factor that most affects the environment. rain humans*** sunlight oxygen
Monday, January 11, 2016 by Kaai97

Science
Select the factor that most affects the environment. weather*** land oceans research
Monday, January 11, 2016 by Kaai97

Science
Select the factor that most affects the environment. domestication oxygen time*** wind
Monday, January 11, 2016 by Kaai97

Science
How can two tall pea plants produce a small pea plant
Monday, January 11, 2016 by Jackie

Art
Which of the following most influenced the art of tessellation Language Arts Social Studies Science Mathematics••
Monday, January 11, 2016 by Amanda

Science 7
What is an advantage of the zygospores of it is extremely dry or hot?
Monday, January 11, 2016 by Anonymous

Math
1. Write a ratio and a percent for the shaded area. a 4x4 grid with 5 blocks shaded (1 point) one over five, 25% five sixteenths, 31.25% one over four, 20% one over four, 25% 2. Model 32% on a 5 × 5 grid. (1 point) a 5 by 5 grid has 8 cells shaded. a 5 by 5 grid has 6 ...
Monday, January 11, 2016 by Please, HELP

HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELPP
Melinda’s science teacher gave her an unknown substance to identify based on its properties. After a few tests, Melinda listed her observations in a chart. reflects light very well warms up in my hand flattens out when hit with a hammer conducts electricity Which kind of...
Monday, January 11, 2016 by CANDY HELP

math help..STEVE
Hi i need help on this Test, near my answers! hopefully they show uP! THANKS SOOOOOOO MUCH *huggy* Write a ratio and a percent for the shaded area. a 4 x 5 grid with 6 blocks shaded (1 point) 6 over 25, 30% 3/50, 6% 6 over 25, 24% 3/10, 30% 3. Write the ratio as a percent. In ...
Monday, January 11, 2016 by MISTY HUGYBUGY

Ms.Sue, Reed
Hi i need help on this Test, I put a gold star near my answers! hopefully they show uP! THANKS SOOOOOOO MUCH *huggy* Write a ratio and a percent for the shaded area. a 4 x 5 grid with 6 blocks shaded (1 point) 6 over 25, 30% 3/50, 6% 6 over 25, 24% 3/10, 30% 3. Write the ratio...
Monday, January 11, 2016 by MISTY HUGYBUGY

MATH HELP
Hi i need help on this Test, I put a gold star near my answers! hopefully they show uP! THANKS SOOOOOOO MUCH *huggy* Write a ratio and a percent for the shaded area. a 4 x 5 grid with 6 blocks shaded (1 point) 6 over 25, 30% 3/50, 6% 6 over 25, 24% 3/10, 30% 3. Write the ratio...
Monday, January 11, 2016 by MISTY HUGYBUGY

Math Check (thanks)
Hi i need help on this Test, I put a gold star near my answers! hopefully they show uP! THANKS SOOOOOOO MUCH *huggy* Write a ratio and a percent for the shaded area. a 4 x 5 grid with 6 blocks shaded (1 point) 6 over 25, 30% 3/50, 6% 6 over 25, 24% 3/10, 30% 3. Write the ratio...
Monday, January 11, 2016 by MISTY HUGYBUGY

science
When we project a mobile screen in front of a wall , we only see the white light but R unable to see the written matter on it why ? If this question seems to be undigesting , please try this for once n think.
Monday, January 11, 2016 by achintya shantanu

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Multiple Choice 1. How did the Haitian Revolution impact the history of the United States? (1 point) • It brought the United States into a war with Spain over Cuba. • France no longer had Haiti, so Napoleon was willing to sell Louisiana. • Slave owners in the ...
Monday, January 11, 2016 by Miranda Lambert

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