What is mean by "an electrically-charged object is quantized" ? and which physicist is accredited with the quantization of charge?

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?