Lasers utilize concentrated light waves, focused precisely and used for certain applications. what are some common uses of lasers for medical applications? check all that apply. 1. surgery 2. dental hygienics 3. tissue/tumor ablation 4. kidney stone treatment 5. lasik 6. drug uptake

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?