Recent content by expscv

umm interesting so for tv the digtal or anologo data from source (e.g tape, cd dvd ) is converted into eletric pulese , then our tv broadcast station converted electric plues into em-radiation then goes to reciever...and the goes (skiped the Cathode Ray Tube part which produce the image...

i was being ask to describe the energy changes involved in the use of mobile phones and a television i m noot even sure i have fully understand the question, energy change? say in mobile phone, all i can think of is signal wave turns to electric pulse which then changes into...

cool thanks for the hint and the answer

solve x =(e^y-e^{-y})/2 for y in terms of x i kinda forgot how to do it~~~sign any help appreciated thx could anyone move this to homework k-12 section thanks sorry about this

lol becareful distance and displacement displacement is a vector

ic ic thanks also from ""the thinker" that usually wave as particle collides when at high frequency, such as gamma ray =)

scitensit in 20th centry suggest that wave can behaviour like a particle and particle can behave like a wave for first propose wave can behave like a particle but does it ever collide? e.g photons

quantanised energy?

wow thanks all for correcting me in such wrong concept over a basic principle. force is force motion is motion energy is energy =)

lol yes true , but there is a limit, over the limit (in ur case the friction of box to the ground) the extra froce was used for moving the box, in other case, if u tries to punch a wall, the harder u punch , the more you hurt, why? the more force u apply in , the more force the wall apply...

btw projection motion are true upsidedown parabola

few mathmatical equation this apply tom most projection motion from ground to ground in verticle component y: accelration: -g g equal 9.8m/s2 velocity: -gt+usin(d) { g as above t=time u=intial velicty d=degree to the horizontal of projection}...

yes the acceptable game that would ingnore a lot of moves, but ! but if say the possible of ways play chess could be infinite since checkmate or not is not include.d alternative atom have they basic principle rules, and can limit to a n possible of ways

empty vacuum space? with no radiation?

kinetic is got to do with motion ---> velocity pential energy is generally to do with gravity, which depends on the position of the mass from the centre of gravity