Tuesday
May 3, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

i really need help with science pls help
Two groups of scientists got different results while studying about the origin of the universe. Which of these statements is most likely true about the results of the two groups of scientists? They were not repeated and verified. They provide new testable ideas to strengthen ...
Thursday, April 14, 2016 by Oscar

science help pls pls
Which statement best explains why the Big Bang Theory is the leading scientific explanation of the development of the universe over time? Its experiments reject all old theories on the origin of the universe. Its experiments yield different results every time they are repeated...
Thursday, April 14, 2016 by Oscar

science help pls pls
Infrared radiations are produced when a changing electric field creates a longitudinal wave parallel to it longitudinal wave perpendicular to it changing magnetic field parallel to it changing magnetic field perpendicular to it is it d pls help me
Thursday, April 14, 2016 by Oscar

Science
Do all organisms get the same amount of energy? Why or why not? I would think that organisms get different amounts of energy since some need more and others need less. Like a plant would need different amounts of energy from a bear. A plant would get more energy, it is a ...
Thursday, April 14, 2016 by Scarlet

science
calculate weight by volume for 0.8molal urea,density of solution is 1.14gram per ml
Thursday, April 14, 2016 by kk

Science
Identify and describe the features found in the ocean basin floor
Thursday, April 14, 2016 by Nikki

Science
1. Which of the following is a correct description of a tornado? (1 point) a large swirling, low-pressure system that forms over the warm Atlantic Ocean a winter storm with wind speeds of at least 56 km/h and low visibility a violently rotating column of air in contact with ...
Thursday, April 14, 2016 by correct me if wrong.

science-college physics
Searches Related to 1. A mass of 20 kg is suspended at the end of a rubber cord of diameter 2.0 mm and length 100 cm. Find the period of vertical oscillations of the mass. [Take young’s modulus E, for the rubber = 2.0 x 108 Nm - 2
Thursday, April 14, 2016 by hamunyela

science
A torch bulb is marked with 2.4 volts and 0.75 A calculate the power dissipated
Thursday, April 14, 2016 by abongile

Maths Lit, Geography, English, LO, EGD, Afr.
I am very good at Geo and EGD. Because I didn't take Physical Science, I cannot get into varsity for any engineering degree courses. Can you make alternative career choices available that might include these two subjects?
Thursday, April 14, 2016 by Tanner Gibson

science
solubility product of Ca(OH)2at 25'C is 4.42*10^-5. A 500ml of saturatee solution of it is mixed with an equal volume of 0.4M NaOH .How muchb Ca(OH)2 PREcipited
Thursday, April 14, 2016 by Bhupal Guragain

Science
A car is travelling at 25m/s. The driver takes his foot off the accelerator and slows down. His decceleration is two metres per second squared. How long does it take him to reach speed of fifteen metres per second squared?
Thursday, April 14, 2016 by Marato

science/biology
introduction to cane toad
Thursday, April 14, 2016 by hannah

science
What is the effect of temperature on viscosity of liquid s and why
Thursday, April 14, 2016 by varun

science
which of the following is a posioned gas? option- (a)carbondioxide (b)nitrogen(c)none of these (d) carbon monoxide
Wednesday, April 13, 2016 by pankaj

Science at National University OF Samoa
2-bromobutane heat with 2M NaOH. What is the observation and the chemical reaction for the reaction?
Wednesday, April 13, 2016 by Terry Manu

science
10 students whose combined mass is 700 kg ride down 30 m in a elevator. How much thermal energy is produced in the elevator system by the loss in gravitational potential energy of the students
Wednesday, April 13, 2016 by nat

Science
If the Earth was tilted so that the Arctic and the Antarctic were in the equator's location, how would it affect the climate?
Wednesday, April 13, 2016 by Keon

Science
For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the concentration of H2 is 3.00 mol/L, ...
Wednesday, April 13, 2016 by Kat

science help pls pls
A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculate the approximate distance of the star from Earth? measure the parallax and use it in calculations measure the red shift of emitted light and use it ...
Wednesday, April 13, 2016 by Oscar

Science
The opening to the tracheal system (respiratory system) in insects is the spiracle. trachea. alveolus. bronchus. stomata.
Wednesday, April 13, 2016 by Emma

science (correct please)
(1) Which of the following is an ectothermic vertebrate A) butterfly B) lizard C) eagle D) dog ~~~~~~~~~~~~~~~~~~~~~~~~~ My answer: B ~~~~~~~~~~~~~~~~~~~~~~~~~ (2) which of the following animals is an invertebrate? A) goldfish B) horse C) turtle D) grasshopper...
Wednesday, April 13, 2016 by Yuno Gasai

science
Which of the following is something you should do after severe weather occurs? - clean up flood waters *** - stay away from windows - create a family safety plan - invite friends to see the damage
Wednesday, April 13, 2016 by tay

Science
1. In the real world there are many insulators that you encounter every day. Give an example of a material that is an insulator and another material that is a conductor that you may use on a regular basis. Why do you think these materials were chosen for their particular ...
Wednesday, April 13, 2016 by Leet Speaker

science
What ia the Iupac name of [Cr(CN3)]CL3
Wednesday, April 13, 2016 by Shubham

Science
as a liquid is heated and changed into a gas what happens to molecules
Wednesday, April 13, 2016 by Girl with questions.

Science
Is jumping through a hoop an inherited trait for a dolphin?
Wednesday, April 13, 2016 by Anonymous

science
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Wednesday, April 13, 2016 by josiah

science
how many moles if gold are present in 49 gram of gold
Wednesday, April 13, 2016 by manya

Science
A constant volume of O2 gas is heated from 140C to 216C. The final pressure is 22.3 atm. What was the initial pressure?
Wednesday, April 13, 2016 by Chad

Science
Which of the following is true about chemical energy? A. Chemical energy can be stored more efficiently as glucose than it can be as ATP B. Chemical energy is stored when bonds in ATP are broken to form ADP C. Chemical energy is released when bonds in ADP are broken to form ...
Tuesday, April 12, 2016 by Jae

i need help with science pls
]Most of the drinking water in a location comes from a river. A steel plant is to be built close to the river. It would provide jobs and facilities to many people in the location. The steel plant would use a huge amount of river water. This might cause drinking water scarcity ...
Tuesday, April 12, 2016 by Oscar

science help pls pls
A pond is located beside an open mine. Mercury from the mine contaminates the river water. This is an example of single pollution multiple pollution point source pollution non-point source pollution would this one be c or b. im having trouble with this one.
Tuesday, April 12, 2016 by Oscar

science help PLS
A nuclear power plant produces huge amount of electricity. However, it dumps radioactive wastes into the sea. This has led to an increase in illness among people living along the coast. Which of these is the best method to solve this problem? Increase public awareness to close...
Tuesday, April 12, 2016 by Oscar

science help pls pls
Which of these surface features are formed when the acid in groundwater reacts with limestone? rivers and springs sinkholes and caves hot springs and geysers wetlands and volcanoes is it b pls help me
Tuesday, April 12, 2016 by Oscar

science check
The lake water in a location in Florida has been found to contain high levels of fecal coliform. What are people in the location most likely to do? breed fish in the lake stop swimming in the lake reduce their water consumption install water filtering equipments in their ...
Tuesday, April 12, 2016 by Oscar

science help pls pls
Which of these statements best explains why scientists use models? to allow other scientists evaluate their data to speed up or slow down natural processes to describe and explain non-observable objects and processes to predict the scientific theories which would be proposed ...
Tuesday, April 12, 2016 by Oscar

science help pls pls
Dams are used to produce hydroelectric power. Which of these best describes the impact of a dam on the environment? It causes air pollution. It reduces the level of groundwater. It causes changes in the river ecosystem. It reduces the level of oxygen in river water. is it c ...
Tuesday, April 12, 2016 by Oscar

Science Please Help ASAP
1. Over which interval is the velocity greatest? FILL IN THE BLANK ____ 2. Over which interval(s) is the velocity zero? FILL IN THE BLANK ____ 4. What is the average velocity in m/s from A to B? FILL IN THE BLANK ____ 5. The velocity of an object goes from 4 m/s to 12 m/s in ...
Tuesday, April 12, 2016 by random person who probly takes the same class as you

science
Which of the following substances has the greater heat capacity? a. 0.02 g of aluminum b. 2.00 g of aluminum c. 20.0 g of aluminum d. 200 g of aluminum*** please correct me if im wrong
Tuesday, April 12, 2016 by jai

science
Which of the following is true? Choose all that apply. a. When molecular kinetic energy transferred to a substance, the motion of the molecules in the substance increases. b. When molecular kinetic energy is transferred away from a substance, the temperature of the substance ...
Tuesday, April 12, 2016 by jai

Science 8th
How is a parallel circuit different from a series circuit? A: A parallel circuit only has one path for the circuit to take. B: A parallel circuit has more than one path for the circuit to take. C: A parallel circuit has a broken path for the circuit to take D: A parallel ...
Tuesday, April 12, 2016 by Lady Phantomhive

Science
How does subduction change the ocean floor? a) subduction cause magma to accumulate on the ocean floor b) subduction causes oceanic crust to break into pieces •• c) subduction causes the ocean floor to sink into deep-ocean trenches d) subduction causes metamorphic ...
Tuesday, April 12, 2016 by Queen/Halle

Science
What kind of magma produces a quiet volcanic eruption? A. Magma that is rich in Silica B. Magma that is Fluid C. Magma that is low in Iron D. Magma that is low in Silica•• Correct me
Tuesday, April 12, 2016 by Queen/Halle

Science
locate the epicenter of an earthquake a seismologists must determine all of the following except ? a) the difference between arrival time of P and S waves b) seismographic locations data from the seismograph locations c) the distance from the epicenter to at least three ...
Tuesday, April 12, 2016 by Queen/Halle

Science
of the following illustrates conduction as a mode of heat transfer 1 point a microwave oven produces electromagnetic waves that transfer to the food in the form of head leaving a metal spoon in a bowl of hot soup will make the spoon at a well •• pasta rises and falls...
Tuesday, April 12, 2016 by Queen/Halle

Science
mount twin peaks located in northern Vancouver Island erupted three million years ago and it has not erupted since then. Mouth twin Peaks is most liekly ? a) dormant •• b) active c) extinct d) stationary Correct me
Tuesday, April 12, 2016 by Queen/Halle

science
Which of the following substances has the greater heat capacity? a. 0.02 g of aluminum b. 2.00 g of aluminum c. 20.0 g of aluminum d. 200 g of aluminum*** please correct me if im wrong
Tuesday, April 12, 2016 by jai

science
Which of the following is true? Choose all that apply. a. When molecular kinetic energy transferred to a substance, the motion of the molecules in the substance increases. b. When molecular kinetic energy is transferred away from a substance, the temperature of the substance ...
Tuesday, April 12, 2016 by jai

HEALTH PLZ HELP MEEEEEEEEEEEE ASAPPPPPPPP
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Tuesday, April 12, 2016 by Sparkles_01

math mrs sue please help or any one
I'm in connections and this is a quiz the value of the dependent variable in a function is always blank the value o the independent variable a greater than b dependent on c equal to d less than a science class planted a tree in the school court yard that was 6 inches tall...
Tuesday, April 12, 2016 by josiah

Health Plz help THX!!
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Tuesday, April 12, 2016 by Sparkles_01

Science
The speed of a bycyle reduce from 20 m/s to 4 m/s after travelling 80m .calculate
Tuesday, April 12, 2016 by Prabhat

science
Which of the following best describes the relationship between economic growth and energy use?
Tuesday, April 12, 2016 by trenehsia

science
Charcoal from an ancient campfire has a ratio of 14C to 12C that is one- fourth that of new wood. About how old is the charcoal? The half- life of 14C is 5730 years.
Tuesday, April 12, 2016 by Terrance

science
what will be the speed of a 5oo kilogram mass satellite if we apply 100N force on it after each second till 10 hours and the current velocity of this satellite is 16,800 miles per hour?
Tuesday, April 12, 2016 by vikram

Science
Acetylene gas combust.how many grams of carbon dioxide and grams of water are produced when 52.0 g of acetylene burns ?
Monday, April 11, 2016 by Tan

science
if a force of 3000 N can move a crate at an acceleration of 4.0 M/S what is the mass of the crate
Monday, April 11, 2016 by danielle

science help pls pls
The information about groundwater recorded by a student is valid when it is not biased its results cannot be repeated it is not obtained from a primary source its findings do not have to be shared with others is it a pls help me
Monday, April 11, 2016 by Oscar

science help pls pls
Which of these is the most practical method to prevent global water shortage? Stop planting trees and shrubs in gardens. Conserve, recycle and reuse water in households. Stop using appliances like washing machines and dishwashers. Discourage setting up of power plants which ...
Monday, April 11, 2016 by Oscar

science pls pls pls help me
The lake water in a location in Florida had an unusual color and smell. Investigations revealed that the lake? water contained high levels of toxic fertilizers and pesticides which were carried into the lake from gardens and common areas in the location. What are people in the...
Monday, April 11, 2016 by Oscar

science
Here are all the word you can use chemical property mixture heatcapasity homogeneous viscosity sublimitation physicalproperty compound chemicalformula substance density mass tempurature pressure heterogenerous A _________ property of matter describes its ability to change into...
Monday, April 11, 2016 by jacob

science PLEASE CHECK MY ANSWERS
1. why is it rare for the soft parts of an organism to become a fossil a. the soft parts take a long time to decay. b. the soft parts can be eaten by other animas. c. The soft parts cannot be buried in sediment.>>>my answer d. the soft parts from petrified fossils. 2....
Monday, April 11, 2016 by FluttershyK22

7th Grade Science
Hi, I really need help with this. I'm asked to write a paragraph about this. I just need some help working it out so I can get everything correct. I'm not cheating its just confusing this part of the assignment for me. So please help! I also have to study for Math ...
Monday, April 11, 2016 by Music Lover 14

Science Help
Can someone briefly describe thermal energy?
Monday, April 11, 2016 by Leet Speaker

Science
What Gases Are Produced When A Chicken Is Being Flied Or Cooked? That Aroma Which We All Identify From A Distance And Say I Smell Chicken
Monday, April 11, 2016 by Ackron.Z

Science
A 1 420kg car coasts in neutral down a 2.0 degrees hill. The car attains a terminal velocity of 24.3 meters per second. How much power must the engine deliver to drive the car on a level road at 24.3 meters per second?
Monday, April 11, 2016 by Lionel

Science
2.)A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to come to a stop? A.kinetic energy is ...
Monday, April 11, 2016 by #FreeGucci

math,economics,geography and life science
what courses can i apply for with the following subjects Math Geography Economics Life science
Monday, April 11, 2016 by kgaogelo

Science
4.)which of the following is the best example of transforming electromagnetic energy into thermal energy? A.when trees absorb sunlight for photosynthesis. B.when the interior of a car absorbs sunlight and warms up.*** C.when a solar panel absorbs sunlight to make electricity (...
Monday, April 11, 2016 by #FreeGucci

science (URGENT!! CORRECT PLEASE))
(1) in order for an organism to develop specialized tissues the organism must be which of the following A) A Plant B) An Animal C) Unicellular D) Multicellular ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ My answer: D ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2) Which foods are lipids found in...
Monday, April 11, 2016 by Yuno Gasai

Science
3.)Shoe companies imbed unique designs on bottom of the sneakers they manufacture.what is the made n purpose? A.)to increase potential energy B.)to decrease friction C.)increase friction D.)to decrease potential energy C?
Monday, April 11, 2016 by #FreeGucci

Science
2.)A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to come to a stop? A.kinetic energy is ...
Monday, April 11, 2016 by #FreeGucci

Science
when you turn on a battery powered flashlight, you transform A - Heat energy into light and chemical energy. B - Chemical energy into electrical energy and light.*** C - Heat energy into chemical energy and light D - Electrical energy and light energy into chemical energy. B?
Monday, April 11, 2016 by #FreeGucci

science
I believe the angle of refraction will be ___________ when it goes from a ________ to a _______________ because ____________________________________. I have this on a question and I'm not sure how to answer it. Help?
Monday, April 11, 2016 by Amber

Science Help
How is an area's topography determined? A) By using an area's longitude and latitude B) By using an area's scale C) By using an area's elevation, relief, and landforms D) By using an area's elevation, longitude, latitude My answer is C, is this correct?
Monday, April 11, 2016 by Mittens

Science chemestry
calculate the average rate of a reaction. He placed 10.00 g piece of aluminium into 6.0 M HCl. After 20 s. he found that 4.50 g of unreacted magnesium remained. Calculate the average rate at which magnesium was consumed by the acid. #not I really do not understand the ...
Monday, April 11, 2016 by Sisanda mkhwanazi

Science
I want answer for force at a distance examples
Monday, April 11, 2016 by Priyamvada

Science
Starting with 100 grams of uranium-238, after one half life has gone by, how many grams of uranium-238 will remain?
Monday, April 11, 2016 by Lamont Sanders

Science
Calculate the number of g-atoms in 3.5g nitrogen
Monday, April 11, 2016 by Anonymous

Science
You observed light passing through lenses and through a set of prisms. Why does refraction occur? Include your lab observations in your answer. Respond to at least two other posts and evaluate the thoroughness and accuracy of each response. Can you please explain this or break...
Sunday, April 10, 2016 by Anastasia

science
Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? A: photosphere B: chromosphere * C: corona D: prominence
Sunday, April 10, 2016 by daddy.

political science
One of the main differences in passing a bill is that the House has a _____ which the Senate does not. rule committee lower requirement for passage veto power fast-track committee its the veto power?
Sunday, April 10, 2016 by ryan

political science
Which of the following is NOT considered a critical election? William McKinley (1896) Theodore Roosevelt (1904) Abraham Lincoln (1860) Franklin Roosevelt (1932)
Sunday, April 10, 2016 by ryan

political science
As US ambassador to the United Nations, Samantha Power has what rank compared to other members of the executive administration? cabinet committee sub-committee sub-cabinet
Sunday, April 10, 2016 by ryan

political science
During the 2nd Party System in American politics, parties moved from a ______ in Congress to a _______ in order to pick candidates and develop a party platform. caucus; national convention informal poll; direct primary caucus; direct primary random selection; direct primary
Sunday, April 10, 2016 by ryan

science
What effect does green filter have on pink flowers??please help me now.I am waiting.thank you
Sunday, April 10, 2016 by anonymous

Science
A car is traveling 20m/s brakes and takes 3 s to stop.What is the acceleration in m/s
Sunday, April 10, 2016 by Breanna

science
If you place a green filter in front of a white light and shine it on a pink flower,what colour will it change into.what effect did the green filter have on the pink flower.Explain the reason for the change in colour..THANK YOU:-)
Sunday, April 10, 2016 by ?

science
Explain the reasons for the change in colours
Sunday, April 10, 2016 by ??????

science
What effect did the green filter have on the pink flower
Sunday, April 10, 2016 by unknown

science
a car with two passengers travelling at 15m/s collides with a tree. one of the passengers who is not wearing a seat belt strikes the windshield head first and comes to rest in 0.03 s. the area of contact between the head and the windshield is approximately 5 X 10 to the power ...
Sunday, April 10, 2016 by Christoper

physical science
When a rocket is 3km above the ground,it has an upward velocity of 10 m.s^-1.A booster rockect is fired downward,resulting in a net force of 6000 N being exerted upward on the shuttle.The time it takes the booster to leave the shuttle after being fired is 2,5 seconds.if the ...
Sunday, April 10, 2016 by jeniffer

Computer science
Is computer a system?
Sunday, April 10, 2016 by Noor

Science
Calculate the frequency of rotation of the second hand clock
Sunday, April 10, 2016 by Kenny

Science Please Help!!!
State how matter moves through the biosphere. State how energy moves through the biosphere. Explain each statement using examples to illustrate your explanation. What are some examples of each way of movement through the biosphere? Can someone please help??? Thanks! (=
Saturday, April 9, 2016 by Scarlet

Science
A fossil for an extinct organism is found in layer B. A fossil for another extinct organism, very similar to the first, is found in layer C. What might be the relationship between these two organisms. Im so confused, can someone help.
Saturday, April 9, 2016 by Amie

Math, science
in 2009 an earthquake of magnitude 6.7 shook the kermadec islands off the coast of new zealand. also in 2009 an earthquake of magnitude 5.1 occured in the alaska peninsula. How many times stronger was the kermadec earthquake. Use formula log (I1/I2)=m1-m2 A.39.811 B.20.593 C.5...
Saturday, April 9, 2016 by Student

maths,science,agriculture
What requirements are going to be needed for studying VET at tertiary institution
Saturday, April 9, 2016 by kgaugelo

Science
1. Which of the following is ture about the electric charges below?   A. The ball on the right had a positive charge and the ball on the left has a negative charge.   B. The ball on the left has a positive change and the ball on the right has a negative ...
Saturday, April 9, 2016 by Anonymous

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