Who described atoms as small spheres that could not be divided into anything smaller? bohr dalton rutherford thomson

John Dalton was the first one who gave the first theory regarding the constituent particles of matter.

As per John Dalton, each and every substance of the universe is made up of some tiny spherical indivisible particles called atoms .According to him atoms of different element are different and atoms of same element are same in all aspects.

It was J.J Thompson who discovered electrons.

Rutherford discovered the nucleus from his gold foil experiment and postulated the nuclear model of atom.

Due to the failure of Rutherford's atomic model as it could not explain the stability of the substance,Bohr postulated the atomic model as given Rutherford in a modified way and assigned energy levels to electrons.

Hence the correct answer to this question is Dalton

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).