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A canon is placed on top of a 100.0 m high cliff on the coast overlooking the sea. In the cannonball leaves the canon with an initial vertical velocity of 35.0 ms-1 upward in a horizontal velocity of 60 ms-1. a) Find the maximum height it will reach above the sea? b) Find the total time of...

re: HSC Physics Marathon Archive Question: Pure Germanium can be doped by adding small amounts of phosphorus. a) is doped germanium an n-type or p-type semiconductor. Justify your answer. b) explain how the addition of phosphorus alters the electrical conductivity of germanium need help asap...

ok but i've forgotten how to do these types of questions :haha:

a rocket is launched from a cliff 500m above a plain at a velocity of 350ms-1 at 30° above the horizontal, calculate: a) the initial horizontal and vertical components. b) the maximum height reached by the rocket above the plain. c) the total time of flight. d) the range of the rocket. e)...

pork

the line 6x-ky=4 passes through the point (3,2). Find the value of k

ik that but how do u do it the fraction way? like for 0.444444... u do 4/10 + 4/100 + 4/1000 +... then a=4/10 r=1/10 and then use sum to infinity equation.

hi stuck on this question. 2.8 (8 repeater) write as a fraction.

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bump

thanks anymore ideas

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hey guys so i have to create a 90 to 120 sec short film containing a toothbrush. i need some ideas on what i can do, i've made a stop motion but it is completely stupid with no meaning and is pretty crappy. so any ideas please would be appreciated, dont say brush your teeth. :)

no thats random

do yr 11 half yearlies count towards anything? they are worth 25% but is there anything else to know... i think i failed one exam :cry: