OnceUponATime

You should draw a vector diagram for this. Using a scale of say 1cm=10km/hr. Draw a straight line up the page 12cm to represent northwards at 120km/hr. Where this line finishes, draw a line from left to right 9cm long to represent a crosswind of 90km/hr....

Okay so first up you have to figure out what the definitions are. Here is a little help. Hydrogen cyanide (HCN), sometimes called prussic acid, is an organic compound[8] with the chemical formula HCN. It is a colorless, extremely poisonous and flammable l...

I think you want to ask how are such questions solved If x answers were correct and y were wrong then x-o.5y= 54.5 --- (1) and assuming he/she attempted all questions x+y = 80 ----(2) solving 1 and 2 1.5y = 25.5 => y = 17 If the number of questions attemp...

Hi! The answer is B because the moving parts were not as stiff and were able to move faster and easier. Great job!