Janice and swim 3 meter per second and run 8 meters per second. she is standing at one bank of a river that is 150 meters wide and wants to reach a point located 200 meters downstream on the other side as quickly as possible. she will swim diagonally across the river then run the riverbank. find her best route.

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.