| Message |
|
|
Ashish we answer only one question at a time.
If position time graph is not differentiable at a time then at that point there is a sudden change in velocity (derivative of position).
This means there is a sudden impact on the particle.
|
|
|
|
|
Perfect answer Ashish. Superb. 5 points for you
|
|
|
|
|
Mahia we are sorry. But in this forum we answer only one question at a time. We cannot cover two chapters in one post (And that can never be effective as well). So please go through these chapters through NCERT and then ask specific questions.
|
|
|
|
|
Please check your other post
http://www.goiit.com/posts/list/0/electricity-why-do-electric-field-originate-from-a-positive-74937.htm#369196
|
|
|
|
|
The direction field lines by definition is direction of force on positive test charge. As force on this charge is away from a positive charge (repulsion) the field lines appear to come out from positive charge)
|
|
|
|
|
Perfect answer ankit. Well done
|
|
|
|
100 g oxide contains 69.9 g iron and 30.1 g oxygen
= 69.9/56 mole iron and 30.1/16 mole oxygen
So 1 m6ole iron has 30.1*56/(69.9*16) mole oxygen = 1.5
So Ratio of iron to oxygen = 1:1.5 = 2:3
So emperical formulae is Fe2O3
|
|
|
|
|
Aditya your question is not clear. If you are taking about sigh of 'g' then check your other post
|
|
|
|
|
It depends on your choice of positive direction choosen. If you take upward direction as positive then g is negative. If downward direction is taken as positive then g is positive.
|
|
|
|
|
If the charge is negative there will be eight electrons and hybridisation will remain sp3(Charge is because of electron and it is in hybrid orbital). But if a positive charge comes then there will be only six electrons which will have sp2 hybridisation (In that case charge will be on nucleus)
|
|
|
|
|
If the charge is negative there will be eight electrons and hybridisation will remain sp3(Charge is because of electron and it is in hybrid orbital). But if a positive charge comes then there will be only six electrons which will have sp2 hybridisation (In that case charge will be on nucleus)
|
|
|
|
|
Vikky we can't help you like this. So please ask proper questions. And we answer only one question per post
|
|
|
|
Please check your other post
http://www.goiit.com/posts/list/0/trignometry-explain-fully-the-concept-of-inverse-trigonometric-74641.htm#367736
|
|
|
|
Inverse trignometric function is a function which gives the value of an angle whose one of the trignometric ratios.
For example if tan(theta) = 1
Then theta = tan inverse (1) = pi/4
Now as many value of theta can give a given value of trignometric ratio we define their range.
In absence of range definition tan inverse(1) can be pi/4, 5pi/4, 9pi/4 etc. So we define range of taninverse from 0 to pi. Si tan inverse(1) will take only a value of pi/4
I hope this clears your concept. I will suggest you that please do some problems and feel free to ask us
|
|
|
|
