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What does y'=0 and y''=0 mean. Isn't that referring to how u find inflection and stationary points? u let y' and y'' equal 0? What does it have to do with horizontal pt of inflexion?

we have 256 people doing advanced english :D

okay. thanks!

really? do u mean 10% of the entire 800 words, ie you could write 880 words?

ya its an assessment

Hi Guys, I have a creative piece due soon. The word limit on it is 800. I was wandering how many extra words would be accepted? My teacher said upto 30- but mine reaches 860

dont restate things, be succinct, and use the power of comma and pause. It will reduce your time. And also if it makes sense, cut down- don't cut out. :D

How many words would be an advisable amount to say in a 3.30min speech?

okay!! Thanks heaps!! btw, best of luck for your HSC results !!

so for the motor to be overloaded, the counter torque would be greater than the motor torque ?

Right. But can u please explain why does the rotor slows down when it is overloaded? Is it something to do with the counter torque?

Hi guys, I was reading some information. It was taking about how the current, emf and back emf varies as the DC motor is in different stages; ie - just statred, normal operating speed, and overload. It stresses the fact that "if the motor is overloaded, it rotates too slowly. This reduces the...

+1

enzymes are biological catalysts :D

I dont understand, how is it perpendicular ?

well in very simple terms, it provides employment to the people who produce it. and, satisfys the wants of consumers - the science behind it is really important as PVC is crucial in our day to day lives . (bs about, the uses and relate it to Q)

Hi guys, We have an assignment and one of the Q's ask "outline the chemical and physical properties that makes ethanol suitable to replace fuels obtained from petroleum" I have some examples, like flashpoint, combustion , but how would you talk about its physical properties being helpful? Can...

thanks mate :D

Yeah , i ended up doing the same steps - looked messy to me to , i thought i did it wrong :(

Q) P is a variable point on the parabola x^2=-4y . The tangent of P cuts the parabola x^2=4y @ Q and R. Show that 3x^2=4y is the eq of the locus of the midpoint of the chord RQ. thanks!