What is the focal length of the corrective contact lens needed by a nearsighted person whose far point is 60 cm?

Write a question about how changing temperature affects the gas inside the sports ball

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal