Aspaceship of mass m has its engines switched off and is moving in a circular orbit at height r above the surface of a planet of mass m and radius r. a) derive an expression for total mechanical energy e of the orbiting spaceship, in terms of g, m, m and r. b) derive an expression for the minimum speed v the spaceship would need to escape from this orbit into deep space, in terms of system parameters. (the engines can’t fire for the whole trip; they can only give the spaceship one boost so it obtains this velocity. ignore all other celestial objects.)

does anyone know or what?

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!

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1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.