The human eye can respond to as little as 10^-18j of light energy. for a wavelength at the peak of visual sensitivity, 550 nm, how many photons lead to an observable flash?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

What do you think car designers do if the damage caused by a crash test is too severe?

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line