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A 5 g marble is fired vertically upward using a spring gun. The spring must be...

A 5 g marble is fired vertically upward using a spring gun. The spring must be compressed 6 cm if the marble is to just reach a target 36 m above the marble's position on the compressed spring.

A) What is the change in the gravitational potential energy of the marble-Earth system during the 36 m ascent?

B) What is the change in the elastic potential energy of the spring during its launch of the marble?

C) What is the spring constant of the spring?

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