Which of the following objects absorbs the most light? A a metal soda can

B a mirror

C a shiny new penny

D a wool carpet

Does the distance travelled by an oscillating mass between times t=0 and t2 equal the displacement of the particle over the same time period if t2> t/2? hint: consider a sine wave starting at t1=0, then consider a closing wave starting at t1=0, for your explanation.