DIWALI KE BAAD KAISAY KARE 30 DIN MAI TYYARI

The mass of an electron is 9.1 xx 10^(-31)J , if its K.E. is 3.0 xx 10^(-25)J . Calculate its wavelength.

A conservative force acts on a 4 kg particle in x direction. The potential energy U(x) is given by U(X) = 40 + (x – 6)^2 , where x is in metre. If it is given that at x = 8 m, KE is 30 J then find the maximum KE of the particle.

The simple interest on Rs 1820 from March 9, 2012 to May 21, 2012 at 7 1/2% rate will be (a) Rs 22.50 (b) Rs 27.30 (c) Rs 28.80 (d) Rs 29

A Diwali cracker of mass 60 g at rest, explodes into three pieces A, B and C of mass 10 g, 20 g and 30 g respectively. After explosion velocities of A and B are 30 m/s along east and 20 m/s along north respectively. The instantaneous velocity of C will be

Who was sworn in as the new chief minister of Andhra Pradesh on 30th May 2019?

How high must a body be lifted so that it gain P.E. equal to its KE while moving with a velocity of 30m//s ?Take g=10m//s^(2)