Science & Mathematics Questions and Answers
!!Quadratic equation help please!!?
<Help Me out!> Maths?
"biodegratation with microorganizm" ı couldn't found any article please help me?
"Interference from coherent sources can only occur when sources have the same polarization". Is this true?
"Invisible" signals like radio, TV, mobile phones - Can they damage our health?
"JOKERSWILD" is stumped for an "ANSWER"?
"Kyrill" is product of the climatic change?
"reworded"! why do some people say humans aren't to blame for climate change?
"Spinning in their grave" How much energy do you think would be generated?
"The whole is greater than the sum of it's parts"?
"what is 17% of £100"?
"what kind of compound frequently shows coordinate covalent bonds?"?
"why are the further amoeba generations called DAUGHTER cells"?
(-(((x/lnx)-xln(-lnx)))/x)+(1/x) --- can anyone tell me what the derivative of this function is? thanks?
(1+ax)^n has the first three terms of 1+21x+189x^2 what is a and n, how would i go about doing this?
(4.9005 x 10^13 ) / 98,999,999,999?
(4LO-O*O)/(6/v*9*1/(e*e)*1/9)?
(5sin4t,8cos4t,5t^2 + 16t +3)?
(8, -1) is reflected over the line y = x. What are the coordinates of the image?
(a) What is the name of the interaction responsible for giving molecules such as water and ammonia anomalous p
(Maths) Everyday Percentages Question?
(rubbish) landfill sites a good or bad thing?
(time travel)i watched a programme on the subject proving the possibility of going back in time if only .?
* Maths o matic *?
***glass floor in my house what thickness glass do i use***?
***what happens if high tension electric wire break and contact with the sea******?
,green energy is waste incineration the way forward?
..And now an astronomical detective story spannin 3 centuries..?
.hovercrafts?
.How does a protease tenderize meat?
.Why is the sea level higher off the coast of Bermuda than New York?
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[.sammiej.] Maths question again, please help me!!?
[.sammiej.] Maths Question, please help!!!?
_H4O2+ What is this???
`Big bang`?
~*~ Micro orginisms~*~?
0.05g of x per 100cm3 what is this parts per million?
0.999... = 1?????
1 + 1 is 100% increase in the total; + 1 is 50%; + 1 is 33% and so on.How many additions to reach 0%?
1 10 of 50?
1 billion ???
1 gallon H2o has mass 10LBS,If 2in of fell how much does the cloud weigh?
1 hundred+sixty five-5*four+55+20?
1 inch = cm ?
1 mile is equal to how many kilometers?
1 tablespoon= how many ml?
1) A Particle moves s metres in time t seconds where:?
1) What's the most dangerous creature on the planet?
1,11,21,1211,111221 - what comes next?
1,12,123,12320,12324,1232042,12320424,?
1,12,123,12320,12324,1232042,12320424,?
1,8,13,16 what two numbers comes next and why Also 20,29,77_ _ I don't have a clue?
1. Air is moved through 90 deegrees in which of the following fans?
1.5.10,16 _ _ what comes next and also 1,2,4,7,11 _ _?
1.Describe the main details of the production and manufacturing processes of cement, concrete and bricks?
1.Explain the difference between the H and P method?
1.Explain the difference between the H and P method?
1.simplify the expression 13+(-12)-(-5)=? a. -6 b.-30 c.6 d.30?
1.What is essential about certain amino acids and fatty acids?
1/3 of 1500?
10 for the first person to answer all of the Questions..?
10 pointer?
10 points for the right answer?
100 Degrees or Snow?
100 feet = how many mm?
100% English?
100% or Snow?
1000 ducks take off to the South:is earth lighter?
100gms of sugar in 500mls of water, what would the mass be? how do you work it out.?
110 character question...? If I was to pull off my rats tail , do you think it would notice it was missing?
110 is binary for 'six degrees of separation' - are there any other binary series that translate into phrases?
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12 pupils took part in test. There scores are: 35, 26, 32, 28, 19, 43, 47, 22, 35, 32, 28, 36?
12% of 24.99?
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1300psi = ? bar?
15 cats meet 3 cats each. Those cats all meet 25 cats and they all go for a curry! How many cats?
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18% energy used for meat based food processing. What shall we opt?
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1hundred+sixtyfive-5xfour+55+20=??
1st man to walk on moon?
1st order differential equations / Particular integral?
2 chicken questions ~??
2 hundred+twelve+eighty+8+2*two=?
2 liquid hydrocarbons A and B each C6H6 were used in exp. A decoulrises Br water rapidly, B reactd very slowly
2 relations ~1 and ~2 are defined on the complex numbers C by; z~1 w if Re z= Re w and z~2 w if IzI< or = IwI
2 sets of data with mean and std deviation for each one. I want to sum the 2 means can I sum the 2 std devtns?
2 square metres = how many square cm?
2 Swans have arrived at a flooded quarry behind my workshop whatat is the best food to give to encourage them?
2 years ago health inspectors found locusts in my kebab shop & tried to shut it down.I locked them in basement
20/01/07 Can anyone see the moon tonight in the UK? I have just been told it hasn't been seen for 5 days?
200 divided by 7?
2006 launch of vehicle to study the sun?
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20mcg is equivalent to how many milligrams?
20N force acts on object, this results in an acceleration of 5m\s\s, what is the mass of the object?
21st of december is the shortest night, yet it it seemed to get darker later tonight.?
23 has 1 thing in common with 92 46 36 08. what is it?
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293 T cells?
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2grms of CACO3 + 300ml of HCL how much CO2 does it produce?
2moro is my science mock (GCSE) exam can any 1 tell me any point i need to know?more info inside?
2nd order differential equations, how do u find the general solution?
2nd order non-homogeneous differential equations, how do u find the general solution?
2tan(x)=3sin(x) Solve giving answers within 0 and 360degrees inclusive?
2x^2 -5x^2 -3x+7?
3 factors causing distortion in welding?
3 Guys in a restaurant...?
3 math problems. Help please and thank you.?
3 phase electricity?
3 potential costs and 3 potential benefit of social grouping in primate?
3 storey building i want to install mains operated with battery back smoke heat detectors?
3 Trig Problems?
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39 B in the OT?
3d line equation, parametric equations?
3D or 2D? Are the '2D' shapes used in teaching maths really 2D? Or 3D objects?
3phase motor wiring codes?
3x squared = 108, what is value of x?
4(2y-5)=32 wat iz y?
4, 3, 3, 5, 4, 4,3, 5, 5, 4, 3 . what is the next number and why?
4/3 X pi X radius(cubed)= 288cubic centimetres. what is the radius?
4:1 isnt that right?
4:50pm and still light, great isn't it?
41% of continent surfaces are deserts and it will be worse in the futur; what do you do for it?
48 is three quarters of what number?
4n=2n+5 what is the value of n?
4x=20 and 2x-7=8 help please?
5 7/8 divided by 3 2/3?
5 dice trying to roll 3 of a kind?
5 differences between hormones and enzymes?
5 feet 6 inches is how what in centimetres?
5 mA, 50mV, 10 ohms, could be used in a 1A circuit?
5 Million pounds taken off the coastal defences budget for East Anglia. Anyone else concerned?
5(2x+1)-3(x-4) PLEASE HELP!?
5(2y+3)-12=4(y-6)+14 what do y equal?
5.30 this evening i saw a planet between north an south west anyone no which planet it might be??
5.If global warming is taking place, then how much higher is the sea level now than 100 years ago, and how?
5+X=2X-1 makes?
50 cwts = how many tons?
500 mL = ______L?
518 x 70 = 6270 6481 + 3294 = 32847 7221 x ( 3334 + 3666 ) = ?
530 divided by 4?
5g of gold is melted what is the mass of it?
5x+7y=142 3x-4x=261?
6 G (K of E)?
6+7a/15=35?
60 a day Beagle?
6vlts as a precentage of 400volts supply?
7 Centipedes.. 5 Woodlice AND a spider...Deal or no Deal?
75% what fraction is this?
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7r+2=5(r-4) wat iz r?
8.Explain how you could use dynamic frequency analysis for a time related problem.?
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9 - 6 x 2 = 6 rewrite this calculation. inserting brackets so that they are correct..?
9. How do you avoid falling hair?
92cm what size in inces?
95% of chairs can carry 125 Kg. 90% of chairs can carry 117 Kg. Calculate the mean and standard deviation?
98% of the recommended daily allowance of Fibrinogen (vitamin K) can be obtained by eating three small pebbles
9p+4=2p+60 value of p?
9x+4=3x+1=?
A 50mm cube has a theoretical hole bored through each face, what volume remains,formula for the answer please
A ____ acid is only very slightly dissociated in solution.?
A 1500 kg car rests on four tyres each inflated to a pressure of 200 kPa (29 psi).?
A 24 volt battery is connected to 4 lamps (all joined in series) What is the voltage rating of the lamps?
A 25.0uL sample was analysed for glucose & found tocontain 26.7Ug. Calculate the conc. of glucose in ppm&mg/dL
A 5 m length of steel wire has a resistance of 4.0 ohms. If the wire is attached to a 3 V battery, how much cu
A 9.0 v Battery of negligible internal resistance is connected to light bulb.?
A amplifier with negative feedback?
A baby is born 8 months premature on the 15th of May 1958, but dies in January the same year. Is this possible
A ball can be deconstructed and reassembled into two balls same as the original?
A biometric identification system has a false match rate of 1 in 15 000. It is used for identification with a?
A block of mass 5kg is held at rest on a rough plane, inclined at 30degrees. The blocked is released.?
A boat moves with a constant acceleration of(0.2i + 0.1j)ms,where i and j are directed east+north respectively
A boat moves with constant acceleration, so that at time t its velocity is given by v = 2(a - t)i + 4(3 - t)j?
A book called the Earth from the Sky?
A box contains 13 red balls and 26 bule balls. 2 balls are simultaneously taken random, prob r both same color
A brain boggling math question!?
A calculus question! i need help please!!?
A camera using autofocous is 3m away how long is the transit time of the pulse of light from the camera 2objec
A can of diet fizzy drink may contain 70*10-3g of aspartame( READ BELOW QUESTION CONTINUES)?
A car battery gives 3000J of energy to 30 coulombs of charge. What is the e.m.f of the battery ?
A car moves upwawrds if kept on the slope of a hill.Likewiswe water moves upwards. Why?
A car travels 10km, and takes it 20 minutes, how do work this out?
A car travels 10km, and takes it 20 minutes, how do work this out? how fast is it going?
A case of 42cm x 42cm x 60cm, I want to put tins which are 6cm in dia & 12 cm high?
A child's toy is made up of a cone.?
A circle has a radius of 4 inches. its dilated by reducing its radius by 60%. Whats radius of reduced circle?
A circle has radius r. What is the formula for the area of the circle?
A circular motion question?
A circular paddling pool has an inside diameter of 120cm and a depth of 20cm.?
A collection of stars in a particular pattern?
A company which hires out equipment by the day has 3 mowers. The number X of mowers which are hired on any one
A compass is actually a?
A cosmoligical event in 12 12 2012?
A couple of robins started builing their nest.?
A couple of tricky Energy/Bonding/Kinetics Questions..?
A cube with side 10 cm ...?
A cylinder, radius 1.325" and length 1" has what volume?
A cylindrical can has a diameter of 12cm what is the length of the can if it ends overlap by 1cm?
A depolariser is used in a primary cell to?
A device for measuring gas emissions?
A dog is canine, a cat is feline, a horse is equine what is a rabbit?
A dog is not just for Xmas?
A domed roof is in the form of a segment of a sphere. If the volume of air space under the dome is 215m cu.?
A dump of waste material?
A factory has a rectangular floor and a flat roof and encloses.?
A fishermen drops a small heavy object into the pond. Does the level of the lake rise or fall?
A fishing boat is lying in the harbour. There is a rope ladder hanging over the side with its end touching th?
A flat roof has rain water on it 150 mm deep. What is the load on the roof,in kN/m2, due to the water?
A force of (3i+2j)N acts at the point which has position vector (i+2j)m...?
A function g (x) is defined as g(x) =x^2+5x-24,evaluate g(-2) and g(-3)?
A function g (x) is defined as g(x)=x^2+5x-24. Evaluate g(-2). Evaluate g(-3). Find the values of x for which?
A function g(x) is defined as g(x)=x^2=5x-24 if g(-2) =-30, g(-3)=-30 and g(x)=0 and x=3 or -8 and g(x)=-24?
A gam is a collection of which creature?
A game is played by throwing a fair dice until either a 6 is obtained or 4 throws have been made.?
A genuine question about sheep.?
A giant asteroid named Apophis could strike Earth in 2029. What do you think about it?
A Giant comet the size of a planet is going to strike the earth in exactly ONE WEEK. My question is.?
A girl has magazines but i dont know how many how do i say how many magazines she has using algebra?
A girl i have not seen for ages said i made her wet as an otters pocket? is this a good thing?
A girl invents something that makes her extremely rich...a bad guys decides he does not want her to b rich and
A globe containing a light source emits 2000 lm uniformly in all directions.?
A good maths website?
A gorila (silver back) and a SiberaTiger?
A group theory question, wilson's theorem?
A hang glider flight upwind?
A hole runs through a sphere, so a cylinder and two 'caps' have been removed. What is the volume of each 'cap'
A hollow, spherical shell with mass 2.00 kg rolls without slipping downa 38 degreee slope.?
A is twice as much as b. c is twice as much as a. a, b, c total £10.50. wHAT IS THE VALUE OF EACH?
A large meteor is heading for our planet. can you help?
A layman's chemistry question?
A liquid @ Standard conditions, has a Specific Gravity (S.G.) of 0.79. What is its Density ?
A lit candle in a completely darkened room produces 'x' amount of light. Would a mirror increase that amount?
A lithium battery with a voltage of 3.6 which has a resistance of 3 k how much current will flow?
A litmus paper that is blue will turn/stay what color in the presence of a strong base?
A litmus paper that is blue will turn/stay what color in the presence of a strong base?
A little more mass could turn Jupiter into a star?
A little mystery..?
A loudspeaker at a rock concert generates a sound intensity of 10-2 W/m2 at 20 m at a frequency of 1000 Hz.?
A Magnet Question?
A man and woman are heterozygous for the cystic fibrous allele,?
A man is prescribed dobutamine 5 mcg per kg per minute. a vial of 250mg of dobutamine are added to a 500ml bag
A man pushes a lawnmower with a force of 80N directed along the handle making an angle of 50 to the horizontal
A man throws a 2.7kg object at a gate 7m away; how much force hits the gate?
A man weighs 70kg is prescribed iv aminophylline 500mg in 500ml 0.09% saline, infused at a rate of 500 mcg per
A manufacturer has determined that his marginal revenue follows the function f(x)=(1-2x)e^-2x, x= price?
A math question?
A maths probability question- please help!!?
A maths question. (Not too hard)?
A maths question?
A mechanic working outside an orbiting spacecraft accidentally releases his spanner, Describe the subsequent..
A mechanics question (I found it confusing to understand).?
A mehanics / physics question.?
A millepede or a centippede..???
A mixture contains the following: - 320g methane, 90g ethane, 44g propane, & 58g butane:?
A model helicopter is hovering. The rotor thrust is doubled. I assume a=1G. what is the terminal v and when?
A modification of the ANPR system described in Q7 carries out some processing at the roadside. It detects the?
A modification of the ANPR?
A monopolist faces a demand function D(p)= e^-p^2, where p is price?
A mouse is 10cm and the ruler is 11cm what is the diffrent?
A new drag car racing has been proposed that probably won't catch on.?
A non-contact digital tachometer?
A octopus has eight tenticles,a octagon has eight sides. so why is the month of OCTober the tenth month ?
A particle is initially at the origin. The particle has a constant acceleration of (2i - 3j).?
A particle moves in the horizontal plane that contains the perpendicular unit vectors i and j.?
A particle travels at 3m/s then accelerates at 2m/s/s(meters per second squared) it travels 4 meters, What now
A particular pumpkin weighs 3/4 of a kilogram plus 3/4 of a pumpkin. How much does this pumpkin weigh?
A patient is prescribe 750 microgram of adrenaline. How many mls are required if a 1 in 1000 solution is used?
A patient is prescribed 100mg of lidocaine. How many mls are required if a 2% lidocaine solution is used?
A patient is prescribed 25mmol of potassium chloride. the infusion fluid contians 20mmol of potassium per litr
A pin traces tight spiral path from 1 pole to other on the surface of 100mm diam sphere how long is the line?
A pizza math's question?
A plant grows 3.5 cm per week. it is now 10 cm tall. how many weeks from now will the plant grow to 27.5 cm.?
A P-model car cost 15 persent more than a V-model car. if the v-model costs $7,000 what is the cost of the.
A prayer specially for the ladies:))?
A primary cell has an internal resistance which will cause?
A problem on group theory, ???
A puzzle of i don't know the answer?
A question about gears and torque...?
A question about gravity...?
A question for a pharmasyst ( know i spelled it wrong!). Would a Dr prescribe Lisinopril for depression?
A question for microbiologists. Does a microwave sterilise as effectively as an autoclave.?