Recent content by desibrij_1785

Data mine the chart of the Nuclides for the follwoing info... 1. Natural isotopes and their abundances. 2. Atomic masses of isotopes in amus. 3. Half lives of naturally occurring isotopes, if radioactive. for the following elements. Uranium. Thorium. Carbon. Hydrogen Lead.

I have and jellyfish replied by slapping me. So how many more post will it take till someone screws up?

thanks for the reply but i found the answer

Help me... A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of .5m^2. At the window, the electic field of the wave has rms value of .02 V/m. How much energy does this wave carry through the window during a 30sec commercial?

1/((1/5)+(1/20)+(1/40)+(1/50))

power value is 3.9*10^26 and there is no efficiency of the sail. i tried your way and i got answer to be .04 m^2 but actual answer is 6.48 km^2. I got that answer by guessing... Thanks anyways.

whats up guys. help me out NASA is giving serious consideration to the concept of solar sailing. A solar sailcraft uses a large, low-mass sail and the energy and momentum of sunlight for propulsion. The total power output of the sun is . How large a sail necessary to propel a 10,000-kg...