Brianna is rowing a small boat across a pond. the air is calm; there is no wind blowing
a. what type of friction is resisting her motion?
b. if two friends join her in the boat, will the friction force change? why or why not

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?