Alice is farsighted and cannot see objects clearly that are closer to her eye than 80.0 cm. what is the refractive power of the contact lenses that will enable her to comfortably see objects at a distance of 25.0 cm from her eyes?

The refractive power of the contact lenses is 2.75 D

Explanation:

Given that,

Image distance v = -80.0 cm

Object distance u= -25 cm

We need to calculate the refractive power

Using lens's formula

Where, v = Image distance

u = Object distance

The refractive power of the contact lenses

Hence, The refractive power of the contact lenses is 2.75 D.

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.