Sunday
February 14, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

Vaal reefs technical high school
Science redox reaction lesson
Wednesday, September 9, 2015 by Asemahle

Science
Which of the following means using specific observations to make generalizations
Wednesday, September 9, 2015 by Serenity

science
how many years will have to pass before only 3% of radioactive isotope is left if there is a half ye
Wednesday, September 9, 2015 by edward

Science
How many parts listed make up a plant or animal cell nucleus?
Wednesday, September 9, 2015 by cindy

Mmanotshe moduane high school
History,Maths Literacy,Geography &Life Science
Wednesday, September 9, 2015 by Silence

science!
this question is not a question but 20 questions. i appreciate if you review all my answers, but i wont provide an answer for the last question (most probably since i didn't finish answering it or typing it out since i only have an hour to do that). now, let's get ...
Tuesday, September 8, 2015 by anon

Science
Use specific data from your experiment to defend or refute the following statements: Plants continue to grow throughout their lives by producing new plant material. Photosynthesis is required for this process to occur.
Tuesday, September 8, 2015 by Rima

Science, chem
Develop a method to prepare 100 ml of 0.500mol/l aqueous CuSO4x5H2O solution. Include the water molecules that are hydrated to the crystals as given in the molecular formula, in your calculation of the molar mass. show all your calculations. Prepare the solution.
Tuesday, September 8, 2015 by Jennifer

science
2.2. A hot air balloonist, rising vertically with a constant velocity of magnitude 5.00m/s releases a sandbag at an instant when the balloon is 40.0m above the ground as shown. After it is released, the sandbag is in free fall. 1. calculate the position and velocity of the ...
Tuesday, September 8, 2015 by LaBoroKa...(LBK)

science
A grinding wheel with a 28cm diameter spins at rate of 2020 revolutions per minute. What is the linear speed of thge rim of the wheel?
Tuesday, September 8, 2015 by blabla

Saint harkewal vidyapeet sr.secondry school
Science: The collapse of atoms into a single quantem state
Tuesday, September 8, 2015 by Awdhesh

science
Based on the oxidation numbers which compound is the oxidizing agent in the following reaction? 8Al + 3KClO4 ¨ 4Al2O3 + 3KCl
Monday, September 7, 2015 by morgan

enlgish
not a question, just want you to check my revision of a draft with an action lead in. this is just the revision of the beginning, i may post more revisions of my draft for the middle and end, and will probably ask questions in the answer section. Revision For Beginning Opening...
Monday, September 7, 2015 by anon

science!
first go to my original question which has the data table with my name, anon, and the school subject as science! tanks. okay so i have a question and most likely will be posting more questions regarding of constructing a graph. my question is, x axis is where you put the ...
Monday, September 7, 2015 by anon

science!
i want you to check my answers for the questions and i might need help on constructing the graph that i need to do for problem 7. variables and graphing assessment practice some students wanted to investigate the effect of light on the growth of spanish needle seeds (bidens ...
Monday, September 7, 2015 by anon

Science
How are the types of ER related to the cell type?
Monday, September 7, 2015 by Bri

Science
How does the cisternal space divide the cell?
Monday, September 7, 2015 by Bri

Science
Which of the following statements is not true of using electron dot diagrams? A. The element's group number provides a clue about the number of valence electrons. B. An element with eight valence electrons is chemically unstable. C. Dots should be placed one at a time on ...
Monday, September 7, 2015 by Dia

IMT
Science: calc.the mass in gram of ammonium chloride with formulae mass 53.49g/mol that will be mixed in 1litre of distilled water to give 0.05
Monday, September 7, 2015 by oluchi

polytechnic of Namibia
Basic science, A hammer of mass is dropped from thew top of a roof of the two storey building to the ground. Another hammer of equal mass fell from a coffee table to the ground. Given than the height of the two storey building and the coffee table are 10m and 5m respectively...
Monday, September 7, 2015 by frans

physcial science
a student drops an object out of the window of the top floor of a high rise dormitory, how fast is the object traveling when it strikes the ground at the end of 3.4s
Sunday, September 6, 2015 by Anonymous

life science
investigation to determine whether expired air contains carbondioxide
Sunday, September 6, 2015 by charles

science
a rocket is launched vertically at a height of 4km above the earths surface calculate the maximum height above the ground level
Sunday, September 6, 2015 by agnes

physics for Science
2) You take the following measurements for the distance a toy car travels in 10 seconds during each 5 trials: 157cm, 175cm, 162cm, 168cm, 187cm. What are the relative uncertainties of the distance and time measurements? Which measurement is the most uncertain? · (157 + ...
Sunday, September 6, 2015 by Alessandra Romano

Science
If one third of 100 g of 27% aqueous sugar solution is taken in a beaker and 10 g of sugar is added to it, the concentration of the resulting solution will be
Sunday, September 6, 2015 by Sannat

Science
A ball of mass 250 g, having initial speed v, moves along a straight path under the action of a constant net force of 8 N. If the ball has speed v after 2.5 s of its journey, then the value of v is?
Saturday, September 5, 2015 by Sannat

science
Which of the following statements describes the aim of the person who threw the darts shown in the picture? (1 point) A*) The person’s aim was both precise and accurate. B*)The person’s aim was precise, but it was not accurate. C*)The person’s aim was accurate, ...
Friday, September 4, 2015 by RAWR

science (physics)
An applied force of 50 Newtons is used to move a 6 kilogram mass.The opposing friction force to overcome is 2 Newtons.
Friday, September 4, 2015 by Anonymous

Science
the brakes applied to a car produces uniform retardation. the car covers 16m before stopping how long where the brakes applied
Friday, September 4, 2015 by Goldy

science
A block of mass 20gm moves along a smooth surface at a speed of 5m/s and collides with a spring constant 20N/m.what will be the maximum compression of a spring?
Friday, September 4, 2015 by rounak bhatti

Physical science
A 70-kg man and a 50-kg woman are in a 60-kg boat when its motor fails. The man dives into the water with a horizontal speed of 3m/s in order to swim ashore. If he changes his mind, can he swim back to the boat if his swimming speed is 1m/s? If not, can the woman change the ...
Friday, September 4, 2015 by Sarah

Science
Scientific methodology is what distinguishes science from other disciplines. Explain
Thursday, September 3, 2015 by DAVID

science
History as a process and history as a study are interdependent. Explain
Thursday, September 3, 2015 by Godwin

Science-AP Chem
Determine the volume (in mL) of 1.0 teaspoon. 1 tablespoon= 3 teaspoons; 1 tablespoon= ½ fluid ounce. Can you help me solve this?
Wednesday, September 2, 2015 by Zef

Science
Hello, I just started my chem class today and I am totally stuck on this question: Hurriance Katrina had the 2nd lowest ever recorded barometric pressure at 0.920 mb. Convert this pressure to units of… a. atmospheres. b. Inches of Hg. I know i need to convert but I'm ...
Wednesday, September 2, 2015 by Elizabeth

Science
Hurricane Katrina, which hit the Gulf Coast of Louisiana and Mississippi on August 29, 2005, had the second lowest ever recorded barometric pressure at 920mb. Convert this pressure to units of atmospheres, and inches of Hg. 1 bar = 0.98692 atm 0.92 bar = 0.92*0.98692 atm = 0....
Wednesday, September 2, 2015 by Alexis

science
A boy runs a 100meter distance race in 20seconds as measured by an observer on earth.how long does it take according to an observer in space ship moving with speed of 0.98c for the boy to complete the run? What is the length of the track according to the moving observer?
Wednesday, September 2, 2015 by euro

science
the spectator ions of all substance that are soluble of the reaction
Wednesday, September 2, 2015 by kholofelo

Mathematics in Science
Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 14.10 m wide by 15.o m long. 212.m^2 211.5 m^2*** 29.1 m 29.10 m
Wednesday, September 2, 2015 by Helpppppppppppppppp Plzzzzzzzzzzz

Physical science
Consider the following reaction that occurs at STP:what mass of N2 gas is needed to react with 12g H2 gas?
Wednesday, September 2, 2015 by Thandi faith mapili

science
. Three charges are positioned as indicated in the figure. Calculate net force exerted on the +15 µC charge by the +11 µC and +13 µC charges
Wednesday, September 2, 2015 by patrick

science
when kcn reacts with nh4cl to give
Wednesday, September 2, 2015 by Anonymous

life science
Determine whether expired air contains carbon dioxide
Tuesday, September 1, 2015 by Simphiwe

Science
Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life.
Tuesday, September 1, 2015 by Anonymous

Science
Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life.
Tuesday, September 1, 2015 by Anonymous

Physical science
Why is it necessary to use four different colours to represent each of the incident rays? Please help because lm not sure about my answer
Tuesday, September 1, 2015 by Thandi faith mapili

Physical science
N2+3H2>2NH3 that occurs at STP What volume of NH3 gas will form if 3g N2 react with enough H2?
Tuesday, September 1, 2015 by Thandi faith mapili

Maths literacy.Geography.Business Studies.Life Orientation and Languages
Can i did agriculture and Environmental science on those subjects?
Tuesday, September 1, 2015 by Anathi

Science
Patrick and Spongebob love to blow bubbles! The ads claim that Super Bubble soap will produce bubbles that are twice as big as regular bubble solution. Sample is made with 5 oz of Super Bubble soap and 5 oz of water, while the other is made with the same amount of water and 5 ...
Monday, August 31, 2015 by Wes

Science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly.*** Scientists use models of natural systems because they like to use art in science. ...
Monday, August 31, 2015 by Anonymous

science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Monday, August 31, 2015 by Anonymous

science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Monday, August 31, 2015 by Anonymous

algebra
complete the table to answer 1-4. i don't put a table here because i can't and it's time consuming, so i made up word problems for the table. 1. for the abc company, you own 5 shares and lost $2 on monday, gained $5 on tuesday, and lost $1 on wednesday. did your ...
Sunday, August 30, 2015 by anon

Computer science
need help how do this program. Use the top-down modular approach and pseudocode to design a suitable program to solve it. Alberta Einstein teaches a business class at Podunk University. To evaluate the students in this class, she has given three tests. It is now the end of the...
Sunday, August 30, 2015 by Poohboi

Science - physics
a jet airplane lands with a speed of 122 m/s and can accelerate uniformly at a max rate of - 6.2m/s2 as it comes to a rest. can this airplane land in 1.0 km runway
Sunday, August 30, 2015 by Tina

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...
Sunday, August 30, 2015 by Sammy

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...
Sunday, August 30, 2015 by Sammy

english
How does the episode with Victor's father and the episode with the lightning strike as described in this excerpt function similarly? They both involve the reading of books about science. They both involve interactions with parents or guardians. They both suggest a certain ...
Sunday, August 30, 2015 by Sammy

english
All that had so long engaged my attention suddenly grew despicable. Which of the following assertions is supported by this text? The forces of nature are not predictable enough for the narrator. The forces of nature are responsible for the shift in focus of the narrator. The ...
Sunday, August 30, 2015 by Sammy

Science
The type of graph used to show how a part of something relates to the whole is which of the following? A)circle graph B)bar graph C)line graph D)direct proportion My Choice is A
Sunday, August 30, 2015 by Trish

science
A solution is prepared by dissolving 0.490 g of an unknown compound in 50.00 mL of water. The freezing point of the solution is –0.201°C. Assuming the compound is a non-electrolyte, what is the molecular mass of the compound? Use 1.00 g/mL as the density of water.
Sunday, August 30, 2015 by vinny

Science
Why is the use of the inquiry process a practical way to approach science?
Sunday, August 30, 2015 by Savannah

Science
What elements have the highest ionization energy and why?
Sunday, August 30, 2015 by Jordan

SCIENCE!
the second worksheet of SCIENCE! for today performing an experiment read the following statements and then answer the questions. 1. a scientist wants to find out why sea water freezes at a lower temperature than fresh water. 2. the scientist goes to the library and reads a ...
Saturday, August 29, 2015 by anon

SCIENCE!
last worksheet for SCIENCE! for today analyzing elements of a scientific method read the following statements and then answer the questions. 1. you and your friend are walking along a each in maine on january 15, at 8:00 am. 2. you notice a thermometer on a nearby building ...
Saturday, August 29, 2015 by anon

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...
Saturday, August 29, 2015 by Sammy

SCIENCE!
i was not taught in my science class any of this, probably a review over 6th grade science, because i learned these in 6th grade.(im in 7th grade now) identifying Errors read the following paragraph and then answer the questions. andrew arrived at school and went directly to ...
Saturday, August 29, 2015 by anon

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...
Saturday, August 29, 2015 by Sammy

english
How does the episode with Victor's father and the episode with the lightning strike as described in this excerpt function similarly? (5 points) They both involve the reading of books about science. They both involve interactions with parents or guardians. They both suggest...
Saturday, August 29, 2015 by Sammy

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...
Saturday, August 29, 2015 by Sammy

english
All that had so long engaged my attention suddenly grew despicable. Which of the following assertions is supported by this text? The forces of nature are not predictable enough for the narrator. The forces of nature are responsible for the shift in focus of the narrator. The ...
Saturday, August 29, 2015 by Sammy

english
What is the main effect of the scene with the lightning strike on the reader? 1. It suggests the narrator has little understanding of the world. 2. It suggests the power of nature is beyond the control of the narrator 3. It suggests the shifting nature of the narrator's ...
Saturday, August 29, 2015 by Sammy

english
What is the main effect of describing key events in the narrative as "accidents" or as happening by chance? They suggest the events are not entirely negative in their effects on the narrator. They suggest the events cannot be retold objectively by the narrator. They ...
Saturday, August 29, 2015 by Sammy

Science
Need some help? How is the model of King Tut like other models used by scientists?
Saturday, August 29, 2015 by Iris

science
Is tundra abiotic or biotic
Saturday, August 29, 2015 by alicia

Science
1)A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. To do this, he sprays the chemical on three plants he has in the laboratory. None of the plants survive. The scientist reports that the ...
Saturday, August 29, 2015 by Anonymous

SCIENCE!
more on hypotheses hypotheses help explain puzzling situations or events. hypotheses answer "how", "what, and "why" questions. explain each of the following situations with a hypothesis: 1. you hang a bird feeder, fill it with food, but no birds come ...
Friday, August 28, 2015 by anon

Political Science
Does the representation system in the U.S. Senate still make sense today? Why or why not?
Friday, August 28, 2015 by Daniel

Political Science
Develop an argument for a strong national government, or for greater state sovereignty and independence.
Friday, August 28, 2015 by Daniel

Math
On average it takes Miguel 45 minutes to compete his math assignments and 30 minutes to complete his science assignments. If he had 24 math assignments this grading period , what was his total minutes spent on math ?
Thursday, August 27, 2015 by AnnaChavez

Science
Which of the following is not an example of acceleration. A a person jogging atn3 m/s along a winding path B a car stopping at a stop sign. C a cheetah running 27m/s east D a plane taking off
Thursday, August 27, 2015 by Kevin

Science
A truck whose bed is 2.5m long 1.5 m wide and 1.0 m high is delivering sand for a sand sculpture competition. About how many trips must the truck make to deliver 7 m3 if sand
Thursday, August 27, 2015 by Brooke

Science
Why do NBA players wear shoes made of rubber? Think about friction, durability, weight and other factors that make rubber the perfect material for the soles of basketball shoes.
Thursday, August 27, 2015 by brooke

Science
can you name two hemisphers in duluth ga
Thursday, August 27, 2015 by brooke

science
find the direction p of the line of intersection of the plains x+3y-z=5 and 2y +4z=3
Thursday, August 27, 2015 by peace

science
(1) A sample of the hydrate CuSO4.5H2O has a mass of 12.5g. (a) how many molecules of hydrogen are contained in this hydrate? If the hydrate is completely dehydrated.
Thursday, August 27, 2015 by chancy xdicey

Science
Fishnets g cxx busty gzfu gd I bzy Gozo duo chv blog
Thursday, August 27, 2015 by Keeper tract

science
The potential energy (in J) of a system in one dimension is given by: 2 3 U(x) = 5 − x + 3x − 2x What is the work done in moving a particle in this potential from x = 1 m to x = 2 m? What is the force on a particle in this potential at x = 1 m and x = 2 m? Locate ...
Thursday, August 27, 2015 by kamal

biology-science
organism: 7 characteristics that make up all organisms biosphere: name our biospherE?
Wednesday, August 26, 2015 by kasha

science
A body of mass 20kg moving with a velocity of 8m/s collides with a stationary body of mass 10kg and the two stick together.They then move with a common velocity V.Find the value of V.
Wednesday, August 26, 2015 by emmanuel

Science
1. The senses are used to make which of the following? (1 point.) inferences predictions evaluations observations*****
Wednesday, August 26, 2015 by Aaliyah

Science
You are exercising on a hot day. Your body temperature goes up. You begin to sweat. The sweat cools your body. Sweating is an example of: A. Input. B. Process. C. Output. D. Feedback.*** I think D?
Wednesday, August 26, 2015 by Amber

physical science
If the park is 360 meters wide and the tram takes 6 minutes to get to the other side, how fast is it moving?
Wednesday, August 26, 2015 by Andrew

Science
After developing a hypothesis a scientist is ready to test it by
Wednesday, August 26, 2015 by Mahoganie

science
which of the following properties of water explains its characterization as the universal solvent. a)kinetic energy of liquid water molecules b)high specific heat c)polarity of water molecules d)high surface tension I chose C
Wednesday, August 26, 2015 by Brenda

science
which of the following properties of water explains its characterization as the universal solvent. a)kinetic energy of liquid water molecules b)high specific heat c)polarity of water molecules d)high surface tension
Wednesday, August 26, 2015 by Brenda

science
A certain quantity of electricity deposits 0.54grams of silver nitrate solution. What volume of H2 will be liberated by the same quantity of electricity at 27 ° C and 750 mm of Hg pressure
Wednesday, August 26, 2015 by Navneeta

physical science
A 8.kg box is sliding across the horizontal floor of an elevator the coefficient of kinetic friction between the box and the floor is 0.310. Determine the kinetic frictional force that acts on the box when the elevator is accelerating downward with an acceleration whose ...
Wednesday, August 26, 2015 by annonimous

Science
in a cricket match a spin bowler bowls a ball from one end of the pitch to rough spot on the pitch which is 18.6 metres from where he lets go of the ball if the ball takes 1.4 seconds to hit the spot calculate its average speed
Tuesday, August 25, 2015 by Jaye

Math and Science
Integration of curriculum areas can be pictured in a weblike structure in which mathematics is always at teh center and science and other subjects are attached by radials true or false
Tuesday, August 25, 2015 by Neat

  1. Pages:
  2. <<Prev
  3. 9
  4. 10
  5. 11
  6. 12
  7. 13
  8. 14
  9. 15
  10. 16
  11. 17
  12. 18
  13. 19
  14. 20
  15. 21
  16. 22
  17. 23
  18. Next>>