A student examines the effect of the number of batteries in a coned circuit on the go alight bulb in the experiment four circuits we built with 1.2.3. dusdy For the the light bulb was measured using a light meter Wuch variable should the student koopcontar?
the number of batteries
O the nights of the light bulb
the data collected from the light meter

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?