Cellular respiration is a process that produces energy for the cell and is about 40% efficient. If 1200 joules of energy are used during cellular respiration, how much of this energy will be lost as heat?
A. 1170 joules
B. 480 joules
C. 1160 joules
D. 720 joules

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?

Select all the correct answers. which three statements about electromagnetic radiation are true?

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?