An object is placed 20 cm from a convex mirror with a focal point of 15 cm. Where will the image be located.
(4 Points)
- 15 cm
-20 cm
60 cm
O Conco
-8.6 cm

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

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?

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in