hey guyss
to find the mass in the turbine question, i just used cross multiplication....they had given the mass in the question when the speed was12m/s so therefore:
12m/s 7500kg
6m/s x
ihope this is right...
for the graph question (where u had to show the variation of CURRENT, what did u guys draw??? cuz in my notes the graph for OUTPUT VOLTAGE was only given,,,not CURRENT
for the diode i chose B
for the milk question, I said that the kinetic energy ofthe milk molecules won't increase enough to allow any molecules to escape as gas, so the coldness od the dampl cloth would prevent the K.E from increasing, thereby keeping the milk bottle cool......I had no other way of explaining
in terms of the moleculesI chose
Aluminium instead of Steel, because, if you noticed, the expansitivity of concrete and steel were the same, so if u chose steel, when you embed it in the concrete, it won't be able to expan/stretch anymore than the concrete, thereby less strength.....
For the direction of the resultant force, I wrote Right....
and for the part where we had 2 mention somethin thts a vector and is not a force, I wrote velocity...
For the first question, I wrote micrometer first, but then since I didn't know how it worked, I wrote a metre rule instead and then explained that first record the measurement with the rule, using a set square (for greater accuracy)for n number of palstic sheets (10 for example) and then divide by 10 to get the thickness for one palstic sheet...
I got 42 for critical angle and for the angle of refraction, I don't know what on earth u guys are talking about dividing by 1
; our teacher never told us any such thing about the reversibility of light
Im sad and in my class Im the best one in Physics
and everyone said the paper was horrible, thanks to our Physics 'teacher'
Can you imagine doing Electricity (LEDs, LDRs, thermistors, capacitors, transistors, FRHR, FLHR, effect of current, a.c motor, d.c motor, Logic gates, potential divide, variable resistors) in 3 lessons only, with our Physics 'teacher' NOT knowing the use to transistors in an LDR+pd circuit and her constant blabbering tht she needz to revise her Electricity facts and then explain to us!!! Dude! ur the teacher and we pay u to KNOW ur facts already nd then explain 2 us!
Back to the questions....whatelse...mmmm ohhh yaaaa for the last last question, I said field is perpendicularly out of page and i have a feeling tht it is
WRONG I really want 2 get A*
Inshallah
