gourav

This page lists questions and answers that were posted by visitors named gourav.

Questions

The following questions were asked by visitors named gourav.

A bock of mass 3kg starts from rest and slides down a surface , which corresponds to a quarter of a circle of 1.6m radius. a) if the curved surface is smooth , calculate the speed of the of the block at the bottom.

A block of mass 3kg starts from rest and slides down a surface, which corresponds to a quarter of a circle of 1.6m radius. a) if the curved surface is smooth, calculate the speed of the block at the bottom. b) if the block 's speed at the bottom is 4m/s,...

Solve the following ordinary differential equations. I) (2y+x^2+1)dy/dx+2xy-9x^2=0 ii) d^2/dx^2+3day/DX+2y=x^2

Calculate the mean value for the number of heads appearing in a simultaneous throw of 3 coins.

If a power failures occur according to a poisson distribution with an average of 3 failures every twenty weeks,calculate the probability that there will not be more than one failure during a particular week.

Given two vector function vector a(t)=(2t+3)i^+(t^2-2)j^+tk^ and vector b(t)=(4-t)i^+(3t^3+1)j^+(2t-1)k^, determine the derivative of vector a(t).vector b(t) at t=1.

Solve the following ODE using the power series method (1-x^2)y"-2xy'+2y = 0

Obtain all the first and second order partial derivatives of the function: f( x, y ) = In(I+xy^2)

A certain mass of a gas at 273 k temperature and one atmospheric pressure is expanded to 3 times its original volume under adiabatic conditions.Calculate the resulting temperature and pressure ( take the value of (gamma) = 1.4 ).

For any two vectors u and v show that (u.v)^2-[(u.v)×v].u = u^2v^2

Supersonic jets are able to achieve maximum speeds of up to 3.0 × 10-6c. Calculate the percentage contraction in the length of a jet plane travelling at this speed.

The rest energy of a proton is 938 MeV. If its kinetic energy is also 938MeV, calculate its momentum and speed.

Missiles are fired towards the earth from a spacecraft. The missiles are moving with a speed of 0.8c with respect to the spacecraft. If the spacecraft itself has a speed of 0.3c with respect to Earth, how fast are the missiles observed to travel with resp...

A radioisotope P has a half-life of 3 s. At t = 0, a given sample of this isotope contains 8000 atoms. Calculate (i) its decay constant, (ii) average life, (iii) the time t1 when 1000 atoms of the isotope P remain in the sample, and (iv) number of decays...

Answers

The following answers were posted by visitors named gourav.

tan4x =tan2.2x =2tan2x/1-tan22x =2.2tanx/1-(2tanx/1-tan2x)2

Plz tell me answer this question

Hey anybody can do this

Thanks Mr jai for this suggestion

If I knew why I would be searching this bloody site.

what is the acceleration of an object in the direction of motion

Missiles are fired towards the earth from a spacecraft. The missiles are moving with a speed of 0.8c with respect to the spacecraft. If the spacecraft itself has a speed of 0.3c with respect to Earth, how fast are the missiles observed to travel with resp...

Supersonic jets are able to achieve maximum speeds of up to 3.0 × 10-6c. Calculate the percentage contraction in the length of a jet plane travelling at this speed.

Let the number be x, According to question 2x-10=60 2x = 70 x =70/2 x =35