Ariver current is 8.0 m/s downstream, and a boat is traveling 10.0 m/s upstream. use equations to describe the boats instananeous velocity relative to the riverbank

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

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