3,323 Answered Questions for the topic Science

06/14/15

HELPP PLEASEE

What study strategies would make effective use of the levels-of-processing approach to memory?
Science

06/13/15

How are sponges different from other animals and how do they obtain their food?

Well the answer dosnt have to be in detail 
Science

05/19/15

A runner travels 800 meters ( 2 full laps ) in 80 seconds, what is the runner's displacement

I have a science exam and do not understand this question. Please help

05/16/15

For the reaction : 4Fe+3O2-->2Fe2O3, if 100 g of Fe are used how much Fe2O3 are produced?

I'm having such a hard time with this..It's my physics HW and I don't know how to solve this.
Science Physics

05/14/15

Help! Bad movie Physics coefficient of friction question! PLEaSE HELP!!!

I am doing a project for my physics class about bad movie physics. I am using the movie Frozen and a scene where Elsa uses her powers to magically create ice under anna. anna then slides. I need to... more
Science Physics

05/14/15

Suppose that the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B?

Suppose that the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B?
Science

05/14/15

How does the Parkinson’s Disease, affect your body system?

Parkinson’s Disease, affect your body system?Parkinson’s Disease, affect your body system? 
Science

05/13/15

what do insects use to breathe

what do insects use to breathe 
Science Earth Science

05/11/15

Write in the Percent Composition of the entire atmosphere

i only want the percentages of each layer of atmosphere Please
Science

05/07/15

What is a chemical reaction

It has to do with science
Science Biology Anatomy

05/02/15

During exercise, venous return is enhanced by?

a.the operation of carotid arterialand femoral arterial valves.b. the operation of the respiratory muscle/ventilation pump.c. skeletal muscle pump operation.d. all of the above.e. only b &... more
Science

04/15/15

Why does yeast not belong in the eubacteria kingdom

It is for my science homework that is due in about 1 hour! I need an answer now!
Science Astronomy

04/14/15

Astronomy question about comets

I am stuck on this one question on my science homework, and I would like to know how to answer it so I can be ready for a quiz, too. Please help.   Suppose a comet passes the sun every 57 years,... more

04/13/15

-7×(-4)÷14 2 the power of 2

need help with algebra expresions

04/09/15

5x= 4 - 3x x= ?

how do i solve this question?
Science

04/01/15

What is the mass of 2.5 moles of BeCl2?

What formula do I need to use to find the mass?
Science

03/30/15

I start with an alternative, my middle is likely an article and my end starts with the beginning of the earth. Who am I

it may be related with science
Science

03/23/15

is oxygen a alkaline earth metal?

explain why it isnt or is
Science

03/22/15

name two rocks that are not igneous metamorphic or sedimentary?

  two rocks that are not igneous metamorphic or sedimentary?help please

Is climate change the same as global warming?

Could the terms climate change and global warming be used interchangeably?

03/15/15

Am I correct in my thinking about cyclic AMP?

I've been working on this for awhile, but I'm not sure if I'm really getting it. If a patient injects, into the venous system, a polar molecule that, when placed in a test-tube with isolated... more

03/05/15

need help on this question, dont understand it.

A 15 litre cylinder contains 0.35kg of butane gas (C4 H10). Assuming ideal gas behaviour, calculate the pressure of the gas if the cylinder is stored at 50 Fahrenheit.
Science Math Time Distance

03/01/15

If Justin races his Checy S-10 down Highway 4 for 2,560 meters in 60 seconds, what is his average speed(velocity)?

If Justin races his Checy S-10 down Highway 4 for 2,560 meters in 60 seconds, what is his average speed(velocity)?

02/22/15

What is the mass of a sample of water that receives 2000 calories and its temperature rises from 60 degrees C to a boil?

This is one of the questions on my review guide my teacher gave me and I have a test tomorrow and have no idea how to find the answer to this question! If someone could give the formula to find... more

A sample of gas under a pressure of 22.0 kPa has a volume of 33.0 cm3. The pressure is increased to 888 kPa, while the temperature remains constant. What v

A sample of gas under a pressure of 22.0 kPa has a volume of 33.0 cm3. The pressure is increased to 888 kPa, while the temperature remains constant. What volume will the gas occupy at this... more

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