Consider the circuit below. When the switch is closed, voltmeter V₁ reads 4V, V₂ reads 1.6 V and voltmeter V, reads 1 V.

Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.