The largest mass extinction event in the history of the earth occurred at the end of the period.

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.

Which of the following statements correctly describes a transformer?