When using a moveable pulley to lift an object, of the object's weight is supported by the section of rope attached to the ceiling. this is why a moveable pulley requires effort force than a fixed pulley to lift an object. a. half, less b. all, less c. half, more d. all, more

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.

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

Astronomers studying the planet of rhombus have detected sedimentary rock on its surface. one astronomer wonders if material in this sedimentary rock used to be in igneous rock deep in rhombus’s interior. can igneous rock become sedimentary rock? explain your answer.