A 400 kg bear is motionless on a 30 degree angle hill. What is the force acting on the bear? What is the x component? What is the y component? What is the normal force? What is the friction force?

Which one of the following research methods can show cause and effect

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature