A man shoveling snow clears his front step using 200 joules in 100 seconds, how much power did he use 2 watts
20,000 watts
100 watts
300 watts

Work = force × a. work b. energy c. distance d. momentum

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant