A level Definition and 104 Threads

Now you're all mostly physics heads on this forum, so it's important to consider than I understand about 1/75th of what is said on this forum. I love physics, I find it fascinating - but I went to this consultation meeting thing and I was basically told that unless I'm a maths freak I'll...

Homework Statement An experiment consists of pulling a heavy wooden block across a level surface with a spring force meter. The constant force for each try is recorded, as is the acceleration of the block. The data are shown below: Force F in Newtons: 3.05 | 3.45 | 4.05 | 4.45 | 5.05...

Circular Motion Edexcel A level Doubt ! Homework Statement In Formula One racing, cars often take corners at speeds in excess of 50 m s-1, and so there is a very real danger of skidding. (a)At a corner of radius 260m the track is banked at 20°. Calculate the maximum speed if no frictional...

Hi there, I am currently attempting to teach AS level electiricity but am finding it really hard understanding some of the aspects of it myself, let alone teach the kids it! They are really struggling with the concepts of voltage, current, resistance and charge, especially how they all link...

I am an A Level Physics students and I have tonnes of questions to ask. So, below are some of them. Hope you will answer them. Please answer the ones you have any idea about even if just a singe question. Hope I will get the answers! The only difference between Kelvin and Celsius is the...

Hi guys, I'm in year 11 (UK) and will be choosing A levels to do in sixth-form next year. I would like to be a physicist and will be choosing physics, maths and further maths definitely. I hope to do four A levels but I can't decide whether to do Chemistry or English Language. Chemistry will...

Homework Statement i want to draw a level curve for the following but I am having some trouble. x-y^2/x^2+y Homework Equations The Attempt at a Solution I know I'm supposed to set c = x-y^2/x^2+y, but i can't find a way to set y in terms of x and c.

I'm doing Physics, Maths and Further Maths for A Levels. I'm planning on doing Theoretical Physics in University. I had A* in Maths and A in Physics for GCSE's. I'm wondering if I should choose another subject? If so, what?

Homework Statement I'm having problems understanding what F(x,y,z)=k means. What does "it is a level surface of a function F of three variables" mean? If it's a surface, why not describe it as z=f(x,y)? Thanks

OCR A level mechanics (M1) Chapter8 Work, energy, power... 5 questions HELP! 2. A winch is used to raise a 200 kg load. the maximum power of the winch is 5 kW. Calculate the greatest possible acceleration of the load when its speed is 2m/s, and the greatest speed at which the load can be...

hey guys,i want a level sensor for a tank, a big industrial one, contains pulp for paper industry, i don't want a continuous data stream, just if it's under a certain level, turns on a pump, and if its over another certain level, turns it off, tell me the type of sensor, and the best...

I am a third year chemical engineering student and don't have much experience in the mechanical stream so I was hoping someone here could help me. At the moment I have an apparatus that consists of a sheet of metal with four syringes sticking through (metal sheet is horizontal, syringes are...

Heyup everyone, Ive been looking into retraining as a teacher, GCSE and possibly A level physics is the level I would love to teach at. Ive been told I would be great at this as I really like to get people excited about learning and really try to engage people at whatever level makes them...

Hi everyone, I'm having trouble with this problem and I think I never wrote down the equation for this question. Can someone help me? Thanks! A car enters a level circular curve of radius 50.0 m. If the coefficient of static friction between the tires and the road is 0.600, what is the...

Hi I am a person in my 30s planning to re-do my high school qualifications and have been studying up for a AS level in Maths with core 1 core 2 and mechanics 1. But I am not quite understanding the structure of the further maths A level. Also in terms of the various different exam boards, is...

Homework Statement Find the values of Σ(a^2), Σ(1/a), Σ(a^2)(B^2) and ΣaB(a + B) for: x^4 - x^3 + 2x + 3 = 0 Homework Equations Σa = 1, ΣaB = 0, ΣaBC = -2, aBCD = 3 The Attempt at a Solution I found the Σ(a^2) and Σ(1/a) successfully correct bt could neither find Σ(a^2)(B^2)...

Hi, I'd like to know why a young modulus for a material is constant whereas the spring constant isn't.Is it because the spring constant depends on the extension which depends on the length and area of the wire?Just wanted to make sure :) Also,I have these two questions I'm not getting the...

Hi :) I have an A Level Mechanics 2 exam in 3 days. I managed to 'solve' this problem from my book, but I'm having some trouble with the underlying concepts. It would be really nice if someone could explain part (c) of the question to me (I've included my solution below but I don't understand...

Hi :) I’m self-studying for my A Level mechanics 2 exam (it’s in 4 days :S) and there’s a problem in my book that I just can’t solve. Any help would be really appreciated. :) Homework Statement Find the sum of the moments about the point P of the forces shown in the diagram...

A stationary wheel ?(solid cylinder) of radius .3m and mass of 1.75 kg has a 12 Nm torque applied to it. Determine the frequency of the wheel after 15 seconds. I = 1/2mr^2 Am I supposed to find "I" first? What is the best way to go about this problem?

Homework Statement Write an equation in words to show relationship between mass concentration, molar concentration and molar mass and give an explanation. Homework Equations Not sure :/ This one has popped up a few times, A=M/Mr, but as of this moment I am not sure of what the letters...

im having trouble with sketching a level curve ex. equation: f(x,y) = x^2 + 2y^2 i can't run it .. (edit: sorry, -cant run it by matlab) .. :( cant solve can't graph can't all ... in short, can't any attempt at a solution :((( thank for your help ..

Homework Statement a car takes 3 mins to travel between 2 sets of traffic lights which are 1800m apart, its velocity at each set of lights is 0ms-1 If the car accelerated uniformly for 30 secs and then maintained a constant velocity for the next 2 mins before retarding uniformly, calculate...

Homework Statement Using the level shifter shown below, design a circuit that will shift a signal from from +/- 25 volts (50 volts P-P) to 0 to 5 volts. Assume R1=R3=100K and R2=R4. In answer 1 give the value for Vref with 1 decimal point of precision in answer 2 gie the value for R2=R4...

Hello, being attracted by old lab instrumentation ( the more switch, led, displays and knobs, the better ) I purchased for approx 20$ a level generator ( W & G PS something ) from a surplus store. The equipment is without user manual. Fact is, I don't have any idea about what I bought ...

Homework Statement Find the point on the curve defined by 5/8 x^2 - 3/4 xy + 5/8 y^2 = 1 That is closest to the point (1,-1) Homework Equations The Attempt at a Solution I started by finding the gradient vector. < (5/4x - 3/4 y) , (5/4y - 3/4x) > I could not figure...

I'm a little bit confused.. and what subjects should I take @ A level? thanks for your help ;)

hey guys, i realize most people are from the US on this site, but I am from Uk and was wondering if its realistic to study a level maths and physics at home on my own whilst working, that is equivalent to whatever u guys in US need to get before entering university. my intention is to get these...

The question I am struggling is number 12 (c)(ii) which starts on page 14, but my part is on 16, the very last question of the paper http://www.hinchingbrookeschool.net/science/documents/2864June2003.pdf I want to calculate the length of a box where n = 3 E_{n} = n^{2}E_{1}...

Hi the question I am asking help for can be found here http://www.hinchingbrookeschool.net/science/documents/A_GCE_Physics_B_2864_01_January_2007_Question_Paper.pdf page 13. question 11b and 11c. Page 12 will give you the experiment setup b - Can somehow please explain how that little...

Hi guys, I am currently in my AS year and a piece of coursework on resistivity of metals, how you derive the equation. But for the coursework i have to write an abstract on it, linking my experiment to a case study, does anyone have any good websites or information to help me out. This is...

I am an American international school student , next year I'm going to take AP exams 2009 (Physics, Math, and English), and I also want to try out the GCE A level, 2009. I am confused by the AS and A2 exams, if I want to get the A level qualification, do I need to take both exams? Also, there...

In my first year at college I have taken BND IT, BNA Sport in the second year I have taken AS Maths, A2 Maths and Further Maths AS (FP1, M1, M2). With my mind set on a Physics degree and with top grades in all subjects will a degree be possible for me without it being studied at A level? If it...

hey guys i am sitting for the A level Cambridge Exams this October and November. Could someone tell me what are the most probable outcomes in physics or what types of questions should i revise to secure a good grade in physics.

Homework Statement A clean surface of potassium in a vacuum is irradiated with light of wavelength 5.5 x10 -7 m and electrons are found just to emerge, but when light of wavelength 5.0 x 10 -7 m is incident, electrons emerge with energy 3.62 x 10-20 J. Estimate a value for Planck's constant...

This is a problem I got from a Stanford class in calc 3: Let f(x,y,z)=xyz+3. Find an equation of the level surface that passes through the point (1,-2,0). This is as far as I have gotten: The constant for the level surface will be k = xyz + 3 = (1)(-2)(0) + 3 = 3. The equation is thus 3...

I have a question that i am struggling to come to terms with. I know how to get the answer but i am not 100% sure why what i am doing works. The question : A smooth plane is inclined at X degrees to the horizontal. A block of mass 5KG is held at rest on the plane by a horizontal force...

Hi! I'm an A Level student studying under the British Edexcel specification (8540). I'm struggling with physics. My teachers at school are uncooperative and boring; it's only been a month and without reviewing basics they're already taking tests. I don't remember much from my GCSEs and my books...

Homework Statement A liquid is being poured onto a level surface making a circular pattern on the surface. Find the rate of change of the area covered on the surface with respect to the radius when the radius is 20cm. Homework Equations Surface area = (Pi)r^2 The Attempt at a...

Homework Statement Draw out the electron configuration of [Fe(H2O)6]3+ The Attempt at a Solution I did the work, but i am not sure if its correct: Is the following electron configuration correct for this complex? [Fe(H2O)6]3+: [Ar] 4s [ i L ] 3d [ i L l i L l i L l...

Hi, i think this is the place for this type of questions? If not, please move it. I need help with these type of questions, i am not being able to do them. Theyre from Edexcel Pure mathematics C1 and C2. Thanks in advance. Homework Statement AB is a chord of a circle where A is at...

Cambridge Gce A Level Past Papers! Help Plzz! can someone please tell me where i can get CAMBRIDGE GCE A LEVEL PAST PAPERS please help me thankyou!

Homework Statement prove that two bullets fired at 30 and 60 degrees will travel the same distance, and the 60 degree shot will travel 3 times as high as the 30 degree. Homework Equations S(displacement) Vo(initial velocity) Vf(final Velovity) t(time) a(acceleration due to gravity)...

Homework Statement A man pulls a crate of mass 67.0 kg across a level floor. He pulls with a force of 172.0 N at an angle of 28.0° above the horizontal. When the crate is moving, the frictional force between the floor and the crate has a magnitude of 124.0 N. If the crate starts from...

Hi i have just started A lvel maths and we are doing surds, i was never taught this in secondary school so i am at a complete loss. I have barly understood the basics but struggled when having to simplify equations Such as (3 + √2) + (5 + 2√2) I know the answer is 8 + 3√2 but can not...

i am not sure it this is a corret place to post this but i am looking for GCE A level pass papers and mark scheme if possible it might be good if this fourmc an provide some and if not can some one direct me to tright place to get pass papers

Hi I need some help! Doing A'level logarithms and am stuck.:rolleyes: log3(x-1)=log8(x+1) So far, I have done these steps... (x-1)log3=(x+1)log8 xlog3-log3=xlog8+log8 xlog3-xlog8-log3-log8 Not sure what to do next to get the solution for x. Everything I do gets the wrong...

I need some help on a question: When a bowling ball rolls down a level alley, does Earth's gravity do any work on the ball? Explain with the use of a diagram. I need help b/c I don't know if the Earth's gravity will effect the ball since the alley is not tilted. Thanks.=)

How do I know if the exmination of my country is equivalent to A-level?

Ok, I've just started doing my a levels this year and i wanted to do Maths, Physics Chemistry and design tech and french. but the sixth form i chose only let's you do 4 subjects in blocks, so i did chem, physics, maths and art, because chem and french are in the same block so i couldn't choose...