On Planet X a.5kg space rock falls a distance of 2.5 meters and loses 20 Joules of energy. What is
the gravity on Planet X?

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

Aphysical change is a change in the size, shape,, or stafe of matter true or false

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.