2. a) A wave measures 6m from the peak to the trough. What is its amplitude? b) In a pond, there are 20 complete waves between the point where a stone fell in and the edge. The stone fell in 5m away from the edge of the pond. What is the wavelength?
c) Write down the equation that uses wave speed, frequency, and wavelength. If the waves in part b) are travelling at 2m/s, what is their frequency?"

Why is metal often used for cooking pan?

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared