Homework Statement
Q7. Some lead shot with a mass of 50 grams is placed into a card board box the distance from one end to the other being 1m. The ends are sealed with rubber bungs in order to prevent the lead shots from falling out, the tube is rotated so the lead shots fall down from one end...
This is all related to GCSE content, but it doesn't go into enough depth for it to make sense:
When a ballon sticks to a wall after becoming negatively charged, why does the surface of the wall become positively charged? I would assume that the repulsion between negative charges forces the...
My son is currently choosing his GCSEs and his current chosen career is Pathology. Maths and English aside as they are compulsory he has chosen Chemistry, Physics and Biology and has four other subjects to choose. Does anyone have any advice on what these four subjects should be for his chosen...
I have attached a copy of a vector question which i cannot do, i do not even understand what the question is asking can someone help?
On a different note i seem to have a lot of trouble with simplifying square roots for example what is the square root of 2704/ is there any way to find the...
Hi all
I have another upper/low bound question, i have attached the question to this thread.
The bit i am having trouble with is part (II) i.e. calculate the upper bound of H.
I attempted this and got: -
(24.45^2)/(2*9.85) = 30.34530457
H = 30.3 (3 sig fig)
The problem is that...
Hello,
I live in England, and in the future I would like to study physics or neuroscience at university. I am currently taking my GCSEs, and I have a dilemma with some of the courses I am taking:
I'm taking a Science GCSE course which includes Biology, Chemistry and Physics, and I am also...
REF: PTNH136
TITLE: Physics Lecturers
Protech Training Services Ltd is a subsidiary recruitment company for North Hertfordshire College. We supply temporary Lecturers and Assessors in all areas of Further Education.
We are currently looking for GCSE and/or A-Level Physics Lecturers for...
I'm to start at Aberdeen, UK, where I have 4 compulsory (basically mechanics, waves, optics +electronics, relativity and quantum mechanics) modules and 4 optional modules. This is basically the only time I can choose modules - the next two years are pretty much set.
Disappointingly, there are...
So finally after many years of avoiding it due to pure fear of the subject, I've decided I am going to learn maths no matter how hard it is for me.
The question is which book should I get? With so many out there I am looking for something with plenty of problems, a mixture of text based and...
Hello,
I'm revising half-life for GCSE and have come across some questions regarding fractions.
For example, "what fraction of the original nuclei will still be unstable after 5 half-lives?"
Am I right in thinking it would be 1/20 as 1/2 x 5 = 1/20 or is that too simple?
Thanks,
Molly
when a gun is fired a very large force acts on the bullet for a very short time.
formula that's given: force x time = change in momentum (kg m/s)
an average force of 4000 acts for 0.01 seconds on a bullet of 50g mass.
DONE THIS PART
b. the bullet is fired...
Mr Green, mass 80 kg, stepped off a boat of mass 35 kg at a speed of 3m/s. how fast did the boat move in the opposite direction?
i have no idea how to work it out?
Homework Statement
Hi! This is my first time on the site. I look forward to working with everyone…but hopefully not too much, assuming I‘m learning things correctly. :P
My question pertains to Recurrence Relations, so here it goes…
Foreword: The text book I’m using actually supplies...
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...
The question: Electricity supplied from the National Grid costs 8p per kWh.
A householder is considering installing solar cell panels. The household uses 4000 kWh of electricity each year. The cost of installing a solar cell panel is £6400 per kW
What is the payback time?
The answer is 40...
Hi guys i'm new to the forum,
I'm currently studying in the UK.
I Wanted to know peoples views on applying for top uni's such as Cambridge, MIT etc.
I didn't do to well in GCSEs because I wasn't serious at the time. I got into AS and completely was overwhelmed by the amount of home...
... so bear with me.
I recently decided that I am an electron, and that my other half is a proton. So, if we had a love-child, would Neutron be an appropriate baby-name?
Thank you, I hope someone can help me!
(UK) What are the GCSE levels requirements to apply for MIT???
For UK guys only...
What are the GCSE levels requirements to apply for MIT???
for those who wants to anser..heres the GCSE leveling here in UK
A*
A
B
C
D
E
F
G
U
How many As do you think I'd need for GCSE? Dyou...
1. A curve passes through the point (\pi/2 , 0) and it's gradient at any point (x,y) on the curve is (sin x)(1 - sin x), find the equation of the normal to the curve at the point x = \pi.
I tried to sub x = \pi, then dy/dx = 0
so that means gradient of the tangent at x = \pi is 0
So, can I...
Hi this is my first one so i need help. I have GCSE physics exams soon and i need some help with revision. Just tell me anything that you can that you will think will help me. Thanks
Homework Statement
A beam of electrons leaves an electrom gun. The current carried by the beam is 4mA. a) How many coulombs of charge pass through a certain point in the beam per second. b) How many electrons pass this point per second?
Homework Equations
KE(j) = Charge of electrons...
Dear All
I am trying to do some Nuclear Fission based activity for my 12th grade students at school level. I shall be grateful if some one suggests such a low cast activity to perform at laboratory.
Kind Regards
Kosher.
Homework Statement
ABCD is a square and on side BC an equalaterial triangle is made extending to vertex E and another is made on line DC extending to vertex F. Prove that ECD is congruent to BCF.
Homework Equations
Proof is all about using algerbra to prove somthing right?
If it's...
Homework Statement
(a) \frac{3}{x}+\frac{3}{2x} = 2
that is 4x = 9 so x = 2.25
(b) I can do the first question (a) easy peasy , however the secnond question says "using your answer to part (a), or otherwise solve:
\frac{3}{(y-1)^{2}}+\frac{3}{2(y-1)^{2}} = 2
What part of (a) do I...
I am currently studying for my GCSE's but have a keen intrest in physics and maths. Today at school i noticed a question;
A chain of length a is placed on a frictional-less table with length b of the chain dangling off the edge of the table.
Using \\F = ma
derive the formula:
\\T=...
I have no idea if this is the right forum for this, but I'd genuinely like to hear what real scientists think of this question which is taken from a GCSE Physics test paper.
Frances claims she can read people's minds. She asks them to think of a number.
She says she can tell whether they are...
I was wondering...say if i wanted to apply for a phD at oxbridge (ok im being a bit ambitious), would my GCSE results be looked at?...i mean would they be significantly important?
beacause my english lang/lit GCSE isn't good..C/C but that was on a very bad day and i thought i actually failed...