There are A,B,C,D at one end of the bridge.they have to cross within 17 minutes.only 2 can cross the bridge at atime .since it is very dark one has to come back to show the light and its said that A can cross the bridge in 1 min ,B can cross at 3min ,C in 5 min and D in 10 min...
In co2 laser, the co2 vibrates when it collides with nitrogen atoms instead of getting excited to next level.Why? why is this vibration after collision is not seen in Helium-neon laser?please explain me
How to divide equally a 6cm line into 7 equall parts?
plz tell me in which website can I get free engineering notes for first year B.E?
plz tell me a website which explains the working of Nd-YAG laser with its energy level diagram.or if u know about them explain them to me.
plz tell me how does wireless communication work in a jist
how to measure vernier caliper? tell me about least count in cm scale and vernier scale least count. how to find the vernier coincidence easily tell me some tips
here is a math trick i.e,45-45=45.how is that explain me
plz tell me the keyboard notes for playing the song saare jha han se accha
how to factorize x^3-18x^2+31X-o=0