Answer the following questions. Is asked to calculate, you must show all work for credit. 7. Calculate how long it would take the cannonball to hit the ground if shot using the setup above.

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.

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

How to tell if a molecule is polar or nonpolar with electronegativity