Select Board & Class

Login
Akshat Manral asked a question
Subject: Physics, asked on on 19/4/16
Sir should i view the study material before or after the class?should we do the practice questions and class test right after the class.
Rashmika B asked a question
Subject: Physics, asked on on 12/5/16
Two forces of equal magnitude are acting simultaneously on a particle at an angle of separation between them 120 degrees.Find the resultant vector.
Elena Gupta asked a question
Subject: Physics, asked on on 27/6/16
​(1+cospi/9) * (1+cos3pi/9) *(1+cos5pi/9) * (1+cos7pi/9) the value of this expression
Abhishek Mishra asked a question
Subject: Physics, asked on on 18/5/18
velocity v and displacement x of a particle executing simple harmonic motion are related ad vdv/dx=-w^2x. AT x=0,v=v0.find velocity v when displacement become x..
Deanambrose asked a question
Subject: Physics, asked on on 22/4/16
sir please explain everything with a proof. it makes concepts more clear and makes mind sharper. allow our mind to think deeper
Prince Second asked a question
Subject: Physics, asked on on 19/4/16
Good Morning Experts,
I want to know about the concepts of logarithm. I have seen some practise question on the dashboard but they are of high level. And even still it is not clear to me that how we can find the values in a question through log, and please also provide me its table. Because it is quite difficult to understand and solve the practice question of logarithm.
waiting for your reply.
thanks
have a good day
Ashish Singh asked a question
Subject: Physics, asked on on 14/5/17
sir can you help me easily to understand the basics of physics my stenght is not so good
Lalita Rani Singh asked a question
Subject: Physics, asked on on 10/6/16
the differentiation of x=3 sin(pie t) with respect to t at t=1 s is given bythe differentiation of x=3 sin(pie t) with respect to t at t=1 s is given by
Sushobhit asked a question
Subject: Physics, asked on on 29/7/17
The area of the parallelogram formed by the vectors A = i + 2j + 3k and B = 3i - 2j + k as adjacent sides is
Manideep Varma asked a question
Subject: Physics, asked on on 23/6/16
the locus of center of a circle with passes through the origin and cuts off a length of 4 units from the line x=3 is
Bhavya Arora asked a question
Subject: Physics, asked on on 13/10/17
From a square of uniform density a portion is removed. Find the centre of mass of the remaining portion if the side of the square is a
Elena Gupta asked a question
Subject: Physics, asked on on 27/6/16
​if a,b,c,d are the smallest positive angles in ascending order of magnitude which have their sines equal to positive quantity k ….....then find value of 4sina/2 + 3sinb/2 + 2sinc/2 + sind/2
Jahnave asked a question
Subject: Physics, asked on on 26/5/17

Find the height of the cylinder of maximum volume that can be inscribed in a sphere of radius a
Nived Devadas asked a question
Subject: Physics, asked on on 22/6/16
Equation of lineBABAisx+y=1x+y=1. Find a unit vector along the reflected rayACAC.
Uma asked a question
Subject: Physics, asked on on 1/5/18
From the top of a tower 400m high a ball is dropped and at the same time another ball is thrown vertically up from the ground at a speed of 100m/s. Assuming both balls move along same line find when and where the balls meet?
Manideep Varma asked a question
Subject: Physics, asked on on 23/6/16
if y=3x is a tangents to a circle with center (1,1) then the other tangents drawn through (0,0) to the circle is
Vaishnavee Thote asked a question
Subject: Physics, asked on on 13/6/16
Pls solve dis que.!
Sushobhit asked a question
Subject: Physics, asked on on 3/7/17
integration of ln x
Piyush Das asked a question
Subject: Physics, asked on on 9/5/17
Differentiate y=2x-1/x^2
Alok Singh asked a question
Subject: Physics, asked on on 16/5/17
The expression for the velocity of a body is given below, where x is in meters and t is in seconds :
v = dx / dt = 3t + 2
Determine the distance (x) travelled by the body in time (t) using the method of integration.
Elena Gupta asked a question
Subject: Physics, asked on on 29/6/16
(31/2+tan1)  ​(31/2+tan2)  ​(31/2+tan3) ..... (31/2+tan29)=
Madhura Bose asked a question
Subject: Physics, asked on on 7/2/17
why electric field lines are repelled in diamagnetic material
Pianist asked a question
Subject: Physics, asked on on 4/7/17
explain this question. What is this a1 a2 and all??
Vishal asked a question
Subject: Physics, asked on on 23/10/19
a ball is rolling to and fro in a smooth circular cup. it goes up on either sides of the lowest point a to the point 10 cm above a. what is the speed of ball at a
Pavitra Golchha asked a question
Subject: Physics, asked on on 28/6/16
Should I leave Kota and join any +2 CBSE school? Btw, I'm IIT 2018 aspirant.
Abhishek Mishra asked a question
Subject: Physics, asked on on 18/5/18
velocity v and displacement x of a particle executing simple harmonic motion are related ad vdv/dx=-w^2x. AT x=0,v=v0.find velocity v when displacement become x
Siddhant Malik asked a question
Subject: Physics, asked on on 6/5/17
sir what are V and U that you took in differentiation?
Manideep Varma asked a question
Subject: Physics, asked on on 29/6/16
the polars of points (1,7)(2,6)and (t,5)with respect to a circle are concurrent then
Brundha Kumaran asked a question
Subject: Physics, asked on on 14/6/17
Integration of mod of X where limits lie From 1to-2
Aastha Adhikari asked a question
Subject: Physics, asked on on 17/6/21
The velocity of a particle depends upon the time t according to the equation:
v= (√ab)+bt + c/d+t.
The physical quantites which are represented by a,b,c and d, are in the following order:

a) distance,distance, acceleration,time
b)distance,acceleration, distance,time
c)acceleration, distance, distance, time
d) none of these
Dhruvin Pandya asked a question
Subject: Physics, asked on on 14/7/18

Given that and A2 + B2 = R2 then angle between and will be?
Pavitra Golchha asked a question
Subject: Physics, asked on on 23/6/16
Scalars & Vectors: Please answer both the questions with diagrams and detailed explanation. (Options included)
Maanya asked a question
Subject: Physics, asked on on 13/5/21
find the following
differentiation by chain rule: y= 2sin(omegax+phi) where omega and phi are constant
Tapvan Sahoo asked a question
Subject: Physics, asked on on 7/5/17
SIR PLZ CLEAR MY DOUBT FOR THIS QUESTION I HAVE ASKED THIS QUESTION ALREADY BUT THE ANSWER GIVEN TO ME WAS NOT HELP FULL . A particle was projected with initial velocity 20m/s at 60 degree to horizontal. After what time its velocity will be perpendicular to initial direction of motion . CHAPTER NAME - VECTOR
Aastha Adhikari asked a question
Subject: Physics, asked on on 22/6/21
Given that A=B=C. If A+B=C then the angle between the vector A and vector C isθ1. If A+B+C=0, then the angle between vector A and vector C isθ2. What is the relation betweenθ1and θ2?
a)θ1= θ2
b)θ1= θ2/ 2
c)θ1= 2θ2
d) none of these
Akansha asked a question
Subject: Physics, asked on on 14/6/16
how to diffrentiate sin x2 ...
Pavitra Golchha asked a question
Subject: Physics, asked on on 25/6/16
Please Answer this.
Sarwar Siddiqui asked a question
Subject: Physics, asked on on 27/7/16
I did'nt started anything in physics .Tell me what i can do?
Lalita Rani Singh asked a question
Subject: Physics, asked on on 10/6/16
If y=αt^2/2+βt, where β and α are positive costant, then dy/dt is equal to
Harsh Sharma asked a question
Subject: Physics, asked on on 26/4/16
Q=[5t+ (3t^2/2) ]^5and in down 3 .
i want a brief explaination
Medha asked a question
Subject: Physics, asked on on 11/6/16
pllz help me with this question, i kw its easy i jst want a hint!!!!
Pianist asked a question
Subject: Physics, asked on on 11/9/17

integrate the following:

 

∫2xydx + ∫x2dy 
Priyanshu Sharma asked a question
Subject: Physics, asked on on 6/6/16
Differentiate with respect to x
ex/log x
Piyush Das asked a question
Subject: Physics, asked on on 6/5/17
Sir, how to solve y= (2x-1)/x^2?
Ayusmita Char asked a question
Subject: Physics, asked on on 4/5/17
how can a magnet create electricity?
Monobikash Deb asked a question
Subject: Physics, asked on on 17/10/16
Give the complete solution of the questions from 36 to 39 

36.  To a person going east in a car  with a velocity of 25 km.p.h. a train appears to move towards north with a velocity of 253 km.p.h. What is the actual velocity and direction of motion of the train ?
                                                                                                                [Ans. 50 km.p.h. 30° east of north ]

37.  A ship A is travelling at 12 km.p.h. in still water in a direction due east. A man on it observe another ship B due north of him which appears to moving directly towards him at a speed of 15 km.p.h. Find the actual speed of B and its direction of motion.                                              
                                                                                                        Ans.  19.21  km.p.h.; 38° 40' west of north

38.  A cyclist moves horizontally at 10 km.p.h. There is no wind and rain drops appear to him to fall at an angle of 10° to the vertical. Find the speed of the rain drops.                                      [Ans. 56.71 km.p.h.]

39.  T a person going westward with a velocity of 6 km.p.h.rain appears to fall vertically downward with a velocity of 8 km.p.h. Find the speed of the rain drops.
                                                                                    [Ans. 10  km.p.h., 36° - 52' west of South]
Elena Gupta asked a question
Subject: Physics, asked on on 27/6/16
if a,b,c are angles of triangle such that 0<a,b,c<90 satisfying sin2a+sin2b=sinc then possible values of c are
Uma asked a question
Subject: Physics, asked on on 7/2/19
The average density of a hypothetical planet is twice that of the earth. If the acceleration due to gravity on the surface of the planet is equal to that of the earth and if the radius of the earth is R, calculate the radius of the planet. (answer- Rp=R/2), this question has been answered incorrectly numerous times and you keep attaching the same hyperlink.
Alifa asked a question
Subject: Physics, asked on on 1/4/17
for what value of p is (i + j + k+ )p, a unit vector?
Aastha Adhikari asked a question
Subject: Physics, asked on on 17/6/21
Vector A is directed along north and vector B is directed along south-west. If C = A + B, then which of the following relations is correct?

a) C must be equal to |A+B|
b) C must be greater than |A+B|
c) C must be greater than |A-B|
d) C must be equal to |A-B|
What are you looking for?

Syllabus