Thread Starter SMC-BMO Follow 14 minutes ago 14m ago Do you need to be able to solve questions such as these for BMO because this is from the SMC but is comparable to a BMO1 Q1 for example ..read more

Thread Starter Math is holding me back, please help. Follow 16 minutes ago 16m ago Hi all, I want to study abroad in the states as i have many friends and like it over there and want to study at Uni. I also want to get a STEM job in the future however the only thing holding me back is math. I never really studied hard back in school as there was a lot going on in my life when i was younger and didn't have support but I'm 23 now and want to make a change for the better. A little background of me is my math knowledge is pretty poor, i don't know all of my multiplication table and co ..read more

Thread Starter Resultant Forces A Level Mechanics Help Follow 24 minutes ago 24m ago Quote: Originally Posted by Rgl7420 Hi, so I've been doing resultant forces using vectors and I'm confused on something. I get the whole vertical Fsinx⁰ and horizontal Fcosx⁰, but in some of the practice questions (AQA) they're using Fcosx⁰ for one of the forces for vertical resolutions, and vice versa. I've looked through the book countless times and can't find anything explaining any rule on why we sometimes need to use the opposite function when resolving forces. Any help appreciated. Thanky ..read more

Thread Starter Smallest Sn>5000 Follow 3 minutes ago 3m ago I am given the geometric sequence 2,8,32,128.. I am asked to find the smallest n for Sn>5000 I know a=2 , r=4 Using Sn=a(1-r^n)/1-r We get, 5000< 2(1-4^n)/1-4 I find that n=6.44 to 2. d.p. Nothing states in the question that it must be a whole number.. Is my working out correct ..read more

Thread Starter help with vectors please!!! Follow 28 minutes ago 28m ago Quote: Originally Posted by natalie_m2612 A quadrilateral OABC is defined by the vectors OA = a, OB = b and OC = c, with a - b + c = 0. a) Show that OABC is a parallelogram. b) Given that OABC is a rectangle and a = (3), find expressions for b and c. Give your answers as column vectors in terms of an unknown constant k. Any ideas? For a) just show the basic properties of a parallelogram ..read more

Thread Starter Urgent mechanics question!! Follow 38 minutes ago 38m ago Quote: Originally Posted by anonymous294 Hi, please could i have help on this question? I’m really confused why for part b, once I’ve integrated, to find c for the second part the markscheme says that at t=5s, the distance traveled is 0m? Here is the question https://app.gemoo.com/share/image-an...geurlgenerator Thank you so much!! Presume its an initial condition (s(5)=0) for motion for the second part, but it would help to see the working youre referring to. So its probably simply saying thats the orig ..read more

Thread Starter #郭文贵#华盛顿农场 Follow 1 hour ago 1 hour ago ..read more

Thread Starter Touching the void Follow 1 hour ago 1 hour ago I need the answer of Qno 4 ..read more

Thread Starter as level mechanics suvat Follow 1 hour ago 1 hour ago Quote: Originally Posted by mqb2766 displacement 0 occurs at t=0, so the final displacement is 1.8m below that position so s=-1.8 as its negative downwards. The final velocity is also heading downwards so v=-10. It may help to sketch the parabola of vertical displacement against time. If youre unsure, post what you think. that is fine, i understand it much better now thank youu ..read more

Thread Starter Help me solve this Combination maths problem Follow 2 hours ago 2h ago Quote: Originally Posted by Paing Thet This is an IGCSE additional mathematics permutation combination problem which I can't understand. Can somebody explain how this is done? My teacher says the question is incomplete. Question --------------------------------------------------------- A box contains sweets of 6 different flavours. There are at least 2 sweets of each flavour. A girl selects 3 sweets from the box. Given that these 3 sweets are not all of the same flavour, calculate the number o ..read more