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#51 Re: Science HQ » projectile » 2014-09-18 16:49:42
Yes you are.
Your explainations have always proved to be very beneficial. 
#52 Re: Science HQ » projectile » 2014-09-18 00:30:46
hmm, so it was simple.
thanks again bob.
#53 Re: Science HQ » projectile » 2014-09-17 18:55:19
It's over now.
and I couldn't make this one:-
Q.A ball rolls off the top of a stairway with a horizontal velocity u.If the steps are h meter high and b meter wide, show that the ball will just hit the edge of nth step if
#54 Re: Science HQ » projectile » 2014-09-17 04:01:35
thank you so much for such simplified answers.
It is really very helpful(because my brain is not working right now and I have my Physics exam tomorrow).
#55 Science HQ » projectile » 2014-09-16 19:36:58
- niharika_kumar
- Replies: 14
A particle is projected over a triangle from one end of a horizontal base and grazing the vertex falls on the other end of the base.If
and be the base angle and the angle of projection , prove that .#56 Re: Introductions » Is there a welcome ? » 2014-09-15 14:13:25
Welcome to the forum!
#57 Re: Help Me ! » coordinate » 2014-09-11 04:11:51
thanks bob.
#58 Re: Puzzles and Games » replace the question mark » 2014-09-11 01:29:43
no I couldn't solve it and so put it up here.
#59 Re: Help Me ! » coordinate » 2014-09-11 01:22:19
are you sure x=a and not -a.
I am getting x=-a.
#60 Help Me ! » coordinate » 2014-09-10 04:15:54
- niharika_kumar
- Replies: 23
If the vertices of a triangle are
, then find its orthocentre.#61 Re: Introductions » Hi » 2014-08-23 03:23:53
Welcome to the forum!
#62 Re: Science HQ » find the force » 2014-08-23 03:22:34
wow, you explained it so easily and well.(It reminded me of bob.)
thank you
#63 Re: Science HQ » find the force » 2014-08-22 19:15:19
I thought the the same but it is an MCQ question with options as follows:-
a)170 N
b)180 N
c)150 N
d)250 N
#64 Science HQ » find the force » 2014-08-22 04:47:44
- niharika_kumar
- Replies: 4
In this figure, mass M is fixed on the wall.How much force on mass m=5 kg should be applied so that it won't slip.
(given: acceleration of van=5m/s^2 ;coefficient of friction between m and M=0.4)
Pls help.
#65 Re: Help Me ! » trig. equation » 2014-08-08 21:23:20
yes I used that function grapher.
I am not friendlier with geogebra.
#66 Re: Puzzles and Games » Talk in horrible grammar » 2014-08-08 04:15:32
how about this?
#67 Re: Help Me ! » trig. equation » 2014-08-08 04:02:55
how to construct the graph of 2^x.
Don't we have some other way other than graphs?
#68 Re: Dark Discussions at Cafe Infinity » High Achievers, Gifted Learners, or Creative Thinkers » 2014-08-07 04:26:17
ok, i will do that.But here he has agreed he meant creative thinker by C.
#69 Re: Dark Discussions at Cafe Infinity » High Achievers, Gifted Learners, or Creative Thinkers » 2014-08-07 04:20:20
I thought it was creative thinker.
Is it different?
#70 Help Me ! » trig. equation » 2014-08-07 04:18:55
- niharika_kumar
- Replies: 10
solve the equation:-
It is simplified in
pls give me the hint to proceed.
#71 Re: Dark Discussions at Cafe Infinity » High Achievers, Gifted Learners, or Creative Thinkers » 2014-08-07 04:10:31
I am more like C.
#72 Help Me ! » an open tank » 2014-08-04 03:03:53
- niharika_kumar
- Replies: 2
A sheet of area 40 m^2 is used to make an open tank with a square base. Find the dimensions of the base such that volume of this tank is minimum.
#73 Re: Help Me ! » Inclusion-Exclusion » 2014-08-01 02:49:39
hey, I made it just now.From R D Sharma, right?
Use venn diagram(intersection).
assign values to those alphabets as per the requirement of the question.
Use the data above like
a+b+d+e=26
and similarly make other eqns.
It will be solved.
#74 Re: Jokes » Math Pick-up Lines » 2014-07-25 16:00:59
one is google chrome.
#75 Re: Help Me ! » trigonometry#2 » 2014-07-25 15:57:44
How to get to that?