The visible spectrum ranges from 390 nm to 700 nm. the visible spectrum consist of the red ( 620 - 750 nm ) , orange ( 590 - 620 nm ) , yellow ( 570 - 590 nm ) , green ( 495 - 570 nm ) , blue ( 450 - 495 nm ) and violet ( 380 - 450 nm ) so the wave length 449 nm will produce a violet color
I hope I am correct my Science teacher said this was the answer to your question
1 volt = 1 joule per coulomb.
Current doesn't actually pass 'through' a battery.
But if it did, then each coulomb would gain or lose 6 joules in traversing 6 volts, depending on its sign, and whether it climbed or fell.
In a slide, you’re potential energy (sitting on top of a slide) is transformed into kinetic energy when you slide down and then goes back to potential energy when you reach the bottom at a stop. No energy was destroyed nor created, just transformed from one state to another
