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HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

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That uncertainty question took so long -.- I left it so I could come back to it at the end and still didnt get time to do it ! I lost marks for no reason -.- I am loosing ten marks for sureee ! But the paper was more of theory than calculations I am glad it was like that ! Btw for the output power was it the gain in potential per unit time or not ?
nope. there is work done against frictional force
 
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what did you do for experiments people? i used a tuning fork experiment on the water level and we can observe the resonance by adjusting the tuning fork, the first sound heard would denote that a first harmonic stationary wave is created which is 1/4 th of wavelength and hence showed how to caculate it
we have to take it twice as antinode is above the tube
 
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Does anyone remember change in kinetic energy and potential energy?if not then the method?And the currents in LDR question?
 
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Guys, does anyone remember the very LAST question? concerning mass-energy?

THe question was to suggest a reason why mass is not conserved. there were 2 marks.

I wrote: "Mass is not conserved since some of the mass is converted to Energy. According to the equation E=mc2, Mass and Energy are directly proportional and given that c, the speed of light is constant, some of the mass is converted to energy"

will I get full 2 marks or only 1 mark for this answer?
 
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143
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27
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Guys, does anyone remember the very LAST question? concerning mass-energy?

THe question was to suggest a reason why mass is not conserved. there were 2 marks.

I wrote: "Mass is not conserved since some of the mass is converted to Energy. According to the equation E=mc2, Mass and Energy are directly proportional and given that c, the speed of light is constant, some of the mass is converted to energy"

will I get full 2 marks or only 1 mark for this answer?
Just so u know E=mc2 is in A2 but yeah ur answer is right.
 
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