Number of particles crossing unit area perpendicular to X-axis in unit time is given by

n = are number of particles per unit volume in the position x1 and x2. Find dimensions of D called as diffusion constant

Anonymous User Physics Units and Dimension 02 Jun, 2020 52 views

A projectile is launched with an initial velocity of 30 m/s at angle of 60 degree above the horizontal. Calculate the magnitude and direction of its velocity 5s after launch?

Anonymous User Physics Kinematics 02 Jun, 2020 85 views

An object is dropped from the top of the tower of height 156.8 m and the same time another object is thrown vertically upward with velocity of 78.1 mm/s from the foot of the tower, find when and where two object meet?

Anonymous User Physics Kinematics 01 Jun, 2020 403 views

A cannon fires successively two shells from the same point with velocity v0 = 250m/s ; the first at the angle =60° and the second at the angle =45° to the horizontal, the azimuth being the same. Neglecting the air drag, find the approximate time interval between firings leading to the collision of the shells (g = 9.8 m/s2.)

Anonymous User Physics 01 Jun, 2020 55 views

A block of mass m is pulled on an incline surface having coefficient of friction = 1 & angle of inclination = 30°, with the horizontal, such that required external force is minimum. The angle made by this force with the incline is :

Anonymous User Physics 01 Jun, 2020 55 views

A particle is projected with speed 30m/s at angle 22.5° with horizontal from ground as shown. AB and CD are parallel to y-axis and B is highest point of trajectory of particle. CD/AB is Anonymous User Physics 01 Jun, 2020 68 views

Each of the two block shown in the figure has mass m. The pulley is smooth and the coefficient of friction for all surfaces in contact is . A constant horizontal force P applied in two cases shown in such a way that block A start just sliding then the value of minimum force P in case-I and case-II is : Anonymous User Physics 01 Jun, 2020 52 views

Let Tr be the rth term of an A.P. whose first term is a and common difference is d. If for some positive integers m, n, m n, Tm = 1/n and Tn = 1/m, then a – d equals

Anonymous User Maths Sequences and Series 01 Jun, 2020 58 views

The sum of the series is equal to

Anonymous User Maths Sequences and Series 01 Jun, 2020 52 views

Let f(x) be a polynomial function of second degree. If f(1) = f(–1) and a, b, c are in A.P., then  and are in

Anonymous User Maths Sequences and Series 01 Jun, 2020 61 views

What is the value of 21/4 41/8 . 81/6 ... ?

Anonymous User Maths Sequences and Series 01 Jun, 2020 51 views

Statement­1 : Statement­2 : What is the correct choice between Statement­1 (Assertion) and Statement­2 (Reason)?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 61 views

If the expansion in powers of x of the function is a0 + a1x + a2x2 + a3x3 + ..., then what is an?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 62 views

The sum of the series Anonymous User Maths Binomial Theorem 01 Jun, 2020 50 views

If x is so small that x3 and higher powers of x may be neglected, then may be approximated

Anonymous User Maths Binomial Theorem 01 Jun, 2020 50 views

If the coefficient of x7 in equals the coefficient of x-7 in then what is the relation between a and b?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 51 views

If sn = and tn = , then tn / sn is equal to

Anonymous User Maths Binomial Theorem 01 Jun, 2020 50 views

What is the number of integral terms in the expansion of ?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 62 views

A ball is dropped from high rise platform at t =0 starting from rest.After 6 second another ball is thrown downwards from same platform with speed v.The two ball meets at t = 18s .find thee value of v (g = 10 m/s*s)

Anonymous User Physics 31 May, 2020 56 views

A uniform rope of length 'L' is hanging off the edge of a rough table having coefficient of static friction u.What should be minimum length of hanging part so that the rope starts sliding down?

Anonymous User Physics 31 May, 2020 54 views

Two particles of masses m1,m2 and charges q1,q2 placed r0 distance apart on a smooth horizontal surface.Due to electrostatic repulsion they move away from each other.Ratio of their kinetic energy at a later time is

Anonymous User Physics 31 May, 2020 60 views

The quadratic equations x2 – 6x + a = 0 and x2 – cx + 6 = 0 have one root in common. The other roots of the first and second equations are integers in the ratio 4 : 3. Then what is the common root?

Anonymous User Maths Quadratic Equation 31 May, 2020 71 views

If the difference between the roots of the equation x2 + ax + 1 = 0 is less than , then the set of possible values of a is

Anonymous User Maths Quadratic Equation 31 May, 2020 53 views