Determine the net force (Fnet) on an object that experiences the forces shown. SP2. Obtain, evaluate, and communicate information about how forces affect the motion of objects..c.
Use mathematical representations to calculate magnitudes and vector components for typical forces
including gravitational force, normal force, friction forces, tension forces, and spring forces
20 N of downward gravity force
15 N of rightward applied force
20 N of upward normal force
10 N of leftward friction force

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light