How can energy from the motion of the crank on a hand- powered flashlight produce light?​

The crank turns gears that create a speed mechanical advantage and turn the generator at a fast rate. The rotors of the generator convert motion into electrical energy that then charges a battery. The current then goes to the LEDs to create visible light.

Explanation:

thymine. in rna, thymine is replace by uracil

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.