Suppose that intern Et Lies claims that a magnetic field could explain planetary orbits better than gravity. The Earth's mass is 5.97 X 1024 kg, Earth's radius is 6,371 km, and Earth's orbital radius is about 1.50 X 108 km. If the Earth has an amount of electric charge sufficient to produce an average electric field value of 153 V/m at its surface, what minimal magnitude of magnetic field would be required to explain Earth's orbital motion, assuming gravity to be completely absent? Hint: use Gauss' law to find Earth's charge.

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?

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Which of the following is not am example of a polymer? protein nylon kevlar concreta