What is the ionization fraction of hi at a depth where t= 9000 k and p= 140 dyn/cm2 in a star composed of pure hydrogen (assume ui= 2)? the right answer should be 0.446.

According to the tide table below what time of day will the highest tide occur?

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.

Which situation will produce the greatest change of momentum