Matematik
hjælp
22. april 2008 af
thekingy (Slettet)
Er det nogen der kan hjælpe mig med de 3 opgaver? vi er lig begynd på integral ved ikke helt hvad det handler om..
a. A force of 1200 N compresses a spring from its natural length of 18 cm to a length of 16cm. how much work is done in comressing?
b. an electron has a 1.6 * 10^-19 C negative charge. how much work is done in separating two electrons from 1.0pm to 4.0pm?
c. the gravitational force (in N) of attraction between two objects is given bye F = k/x^2, where x is the distance between the objects. if the object are 10 m apart, find the work required to separate them until they are 100 m apart. express the result in terms of k.
a. A force of 1200 N compresses a spring from its natural length of 18 cm to a length of 16cm. how much work is done in comressing?
b. an electron has a 1.6 * 10^-19 C negative charge. how much work is done in separating two electrons from 1.0pm to 4.0pm?
c. the gravitational force (in N) of attraction between two objects is given bye F = k/x^2, where x is the distance between the objects. if the object are 10 m apart, find the work required to separate them until they are 100 m apart. express the result in terms of k.
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