Filters for Co K radiation are usually made of iron oxide (Fe203) powder rather than iron foil. If a filter contains 5 mg Fe,031cm2, what is the transmission factor for the Co Ka line? What is the intensity ratio of Co Ka to Co K/3 in the filtered beam?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?