A satellite used in a cellular telephone network has a mass of 2020 kg and is in a circular orbit at a height of 660 km above the surface of the earth.
A) What is the gravitational force Fgrav on the satellite? Take the gravitational constant to be G = 6.67x10^−11 1 N⋅m^2/kg^2, the mass of the earth to be me = 5.971024 kg , and the radius of the Earth to be re = 6.38x10^6m. Express your answer in newtons.
B) What fraction is this of the satellite's weight at the surface of the earth? Take the free-fall acceleration at the surface of the earth to be g = 9.80 m/s^2.

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?

What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane

Why do metals "give up" their valence electrons?