A freight train consists of 4 engines at the front, followed by 28 rail cars. Both the engines and rail cars have the same mass of 758,143 kilograms each. Each engine exerts the same force backward on the track to push the train forward. The total force of friction on the entire train is 801,647 Newtons and is evenly distributed among all of the cars and engines. Even with this friction present, the train engines are able to accelerate the train at 0.05 meters/second2. What is the magnitude of the force in Newtons in the coupling between the engine and the first rail car?

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures