Ask a question
Can't find the answer? Try online tutoring
We have the UK’s best selection of online tutors, when and for how long you need them.
Getting 1-on-1 support is cheaper than you might think.
Day after tomorrow is my exam. I have covered all most all the chapters in chemistry. But I am confused that how to revise all chapters just a day before exam. Please help.
Deduce the expression for the electric field E due to a system of two charges q1 and q2 with position vectors r1 and r2 at a point r with respect to common origin.
hello, I am currently designing a machine that will basically replicate the alternator in a car but for electric cars, however I am currently stuck as I need a compound/element that is a liquid at room temperature and has a low boiling point but it also has to not react with copper. thanks.
Male chickens carry two Z sex chromosomes, while female chickens carry one Z sex chromosome and one W sex chromosome. Located on the Z chromosome is a gene for barring. Barred feathers have black and white stripes. The barred trait is dominant to the unbarred trait. Chickens have a fleshy growth on top of the head called a comb. An autosomal trait called rose comb is dominant to a trait called single comb. An unbarred male heterozygous for the rose-comb trait is crossed with a barred female with a single comb. What proportion of the resulting progeny are expected to be barred males with single combs? Give your answer as a fraction or as a decimal to the nearest hundredth.
I'm doing past exam questions and quite a lot of old exam questions ask about the effect of cyanide on respiration - is this on the new AQA specification??