The charge on an electron is −1.6×10−19 c. the charge on a proton is equal in magnitude, but positive. the electron's mass is 9.11×10−31 kg.

a. in an atom, the electron and the proton and electron are seperated by about 0.5 angstroms, 5.0×10−11 m. what is the acceleration of an electron of an electron in an atom?

b. what is the electric field magnitude due to the proton at the electron's location?

c. the "dielectric strength" is the electric field magnitude at which a substance begins to spark. air begins to conduct or spark when the electric field is about 3 million n/c. how does this electric field compare to the magnitude of the electric field in an atom?

1. the electric field in an atom is much less than the dielectric strength of air
2. the electric field in an atom is much greater than the dielectric strength of air
3. the electric field in an atom is within an order of magnitude (a factor of 10) of the dielectric strength of air

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

I'm kinda lost ! 1. when marilyn takes her pet dog for a walk, the dog walks at a veryconsistent pace of 0.55 m/s. draw a position-time graph to representmarilyn's dog walking the 19.8 m distance from the front of her house tothe nearest fire hydrant.2. both car a and car bleave school when a stopwatch reads zero. car atravels at a constant 75 km/h, and car b travels at a constant 85 km/h. a) draw a position-time graph showing the motion of both cars. howfar are the two cars from school when the stopwatch reads 2 hrs? calculate the distances and show them on your graph. b) both cars passed a gas station 120 km from the school. when dideach car pass the gas station? calculate the times and show themon your graph.3. the figure below shows the position-time graph showing a shopper'smovement up and down the aisle at a store. a) write a story describing the shopper's movements at the store. b) when does the shopper have a position of 6 m? c) how much time passes between when the shopper enters the aisleand when he gets to a position of 12 m? what is the shopper's averagevelocity between 37 s and 46 s?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2