A circuit component that is composed of a semiconductor layer sandwiched between two other semiconductor layers is a(n)
resistor
capacitor
inductor
transistor

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.

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram