Physics: Post your doubts here!

[Aishayasin]

Answer Is B

 

[Aishayasin]

Anweris C .I didnt get how to solve it .please help me.

 

[linkinpark]

View attachment 61858
Anweris C .I didnt get how to solve it .please help me.

Here is the solution to this question. I hope it helps.

 

[Error Syntax]

Can anyone explain these questions
View attachment 61855 Anwer is D

 

[Error Syntax]

View attachment 61856 Answer is C how?

 

[Holmes]

9702/13 June 2014
Q 12, Q 14, Q 16, Q 34, Q 35, Q 37
Help me out in these Questions please.
Thanks in Advance.

 

[areeba240]

9702/w16/51
qtn 2 how to make the error bars
will it be horizontal or vertical as usual....how to do it can anyone plzz show
can someone plzz solve the complete qtn 2

 

[Laveeza]

Plz help me with question 26
Answer is d

 

[Laveeza]

Question 26 plz help

 

[Shuddho Ukil]

Conceptual problem! Help please.
This is a made up question to illustrate my problem. Any help would be greatly appreciated.

Suppose a particle travels in a straight line from point A to point B, and then returns to point A. For both parts of the journey, the deceleration is 8m/s2. So, when using the equations of motion, I will consider a = -8m/s2, if I'm not wrong. So for the return journey, the acceleration would once again be -8m/s2 but due to direction change, would we use -(-8), i.e +8, in the equation?

 

[Shuddho Ukil]

http://physics-ref.blogspot.in/2015/01/physics-9702-doubts-help-page-48.html
See Q two eighty eight

I appreciate the help, but, I could't understand the explanation on the site. Would you or anyone else mind giving an explanation?
Thank you so much though.

 

[silver slick]

 

[silver slick]

View attachment 61887 View attachment 61888

can anyone please explain the b (ii)

 

[Thought blocker]

can anyone please explain the b (ii)

T prop to mean sq speed. use that... to solve

 

[student2]

cn any1 pls pls post a picture of their graph fr physics p5 of the following yrs:
MJ 11 51
ON 09 51
Any helpwud b greatly appreciated

 

[Bishnu Dev]

Can someone explain this to me please?

 

[sushmita33]

hi does anyone have access to physics past paper of 1997 and its ms?

 

[dannyboy123]

Can someone explain the answers to these questions?
The answers are q12)A
EDIT- q9 can be ignored as I found the answer.

for question number 12 you have to take account the fact that moment is conserved and since they stick together their masses will be greater (thus added).
Continuing use this formula m1*v1+m2*v2=(m1*m2)*v
so lets take common mass for both of them ex:20 <------ it doesnot matter what masses you take the answers will be the same
so 20*60+-(20*30)=(20+20)*v <-------------- negative because going in the opposite direction (velocity is a vector)
then change the subject to find v and you'll get the answer 15 which is a
note: you can use the formula when ever the question says that the objects stick together

 

[i_try9621]

Hey in P5 Q1), Is it necessary to fill the out the whole page ?

 

[krishnapatelzz]

Hey in P5 Q1), Is it necessary to fill the out the whole page ?

you should write as much as u can, explain the experiment in the detail , it normally fills all the space but you should include the main points , check the syllabus where it shows how much marks you gain for writing particular things . The syllabus has changed slightly for papers of/ after 2016 , eg now maximum marks you can get in defining the problem is 2 which used to be 3 . so go through the markscheme and see how much you have to write . when i used to do it usually filled all the space .