If a hypothesis is additional tests should be done to ensure accurate results.
a. correct
b. incorrect
c. unknown
d. inconclusive

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

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.