Niha afzal

Oh these are soo bad trick questions .. Anywayss thanks again

Oooh soo I wasnt considering the NET EFFECT.. hmmmn got it and bcz of the net being zero the galvanometer doesnt show any reading

P = V^2 /R P old = 36/2R = 18/R Pnew = 36/R Now p new is 2 times old p.... so ans should be C Did I do this.right?

Beautiful beautiful beautiful. ... I see what you are saying ... I calculated it its 480 I.e C Thanks

In these kinda questions my teacher taught me whenever the galavanometer shows zero current the voltage frm both batteries must be cancelling out .. I.e the emf of above and down battery both is same .... clearly the ans is B .. BUT what I wana know is how do the voltage gets cancelled? Thats not possible right a tiny charge carrying energy on it how can the energy disappear?

I remember my teacher talking something like this.... but I dnt get how this works ... how can the power be max when internal and external resistance are equal? I cam surely learn the above statement for exam purposes but the lines dont make sense to me

Series .... 2 R

Yes the kinematics equation stuff

I said since the external resistance is increasing . The overalll current in circuit must decrease bcz R=V/I. ...the external resistance is increased and the current is decreased ... the voltage be same as the increase and decrease cancels out (maybe) ... part A cancelled .. PART B cant be right instinct... Which leaves me with C and D AND I.DNT UNDERSTAND BOTH OF THEM

My calculations dnt seem to follow any of the graphs.. at 0.5 its not zero which crosses C and D .... THE POWER IS INCREASING ... which aint in any part

I found P OLD and P NEW.. in forms of resistance. ... how do I relate both of these?

Hey guys im back with straight pictures this time .... so happpy :D .... anyways this question I tried the same old Q=IT... but this seems like a trick question. The question at the bottom of the page

Oooooh I think I get it..... I edit in my phone theres some build in photo editor maybe I need to move on this fasttstone editor instead....... thankyousoooomuchsoomuch

Auto rotate-off Whole page in frame .. Seee it got tilted yet again :'( ;'( ;'( :'( :'( :'(

No string junky by this time im convinced its not my cellphone giving me rotated pictures. My guess this forum somehow rotates my images 90º right evertime.. why am I sayinh this because I took a picture which was straight intially posted it RESULT 90ºRIGHT WARDS ROTATION on the forum . Next I took exact same picture rotated it 90ºleft in my cellphone and then added it here it rotated 90ºrightwards again..... then I literally made it rotate upside down (im using the exact same picture in all 3 cases) then added it to the forum RESULT 90ºRIGHTWARDS ROTATION . See I deliberately called it MAGIC when I started the thread..... This is so annoying:'( I find an amazing forum after ages where ppl actually help you with ur questions and then this rotation shit happens :'( plz ppl I desperately need help..

Hi there ... I have some issues in rotating a picture ...... the problem is I take picture frm my cellphone which are straight. However whenever I attach them on this forum thy automatically (magically I musy say ) gey 90º rotated ..... if someone would be kind enough to tell me how do I rotate the photo once attached .. the option/button is what im asking for..... thankyouu!

Studiot again thankuu! !!!

Hi there .. I dnt have a homework question ... however I would appreciate if someone could tell me how to rotate images once you attach them. So heres the problem : I take pictures of my questions frm my cellphone which are straight however whenever I attach them on the forum they automatically( magically) get 90º rotated/tilted....cant find any option which will them rotate them back. I have many questions along with my solutions just need little guidance ... thanku

Thanks a lot a lot. First forum which is actually helping me...... ihave tons of questions il try asking someone to help me with the rotating. ... You have been reallly helpful

Yes I got it now. Thanku so much!!!! Done with the arithmetic tooo got the ans ... now may I ask for one more favour .... I use my cellphone to take the pictures and I post them here .... initially the pictures are straight but whenever I add them here they automatically get rotated .. plus cant find any rotation key.... if u could help me solve this problem too ... thanks

Yesssssss this was sooooo helpful. .. thanku soo soo much

Lets just stick to other thread the one about which we were just talking . So the strain changes but the stress doesnt change.....

Kindly kindlykindly can u refer to my orinal post . I edited that gave my solution (although the pic is tilted sorry for that ) Strain is different...... stresss is same

Youngs = stress / strain .. i think i have to calculate the stres and strain of plastic and nylon individually.

Strain must be same force applied is same . Stress is alsoo same .... and then tensile force is also same