If the momentum of an electron is 1.95 10-27 kg m/s, what is ...

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If the momentum of an electron is 1.95  10-27 kg  m/s, what is its de Broglie wavelength? (h = 6.626  10-34 J  s)
 
  A) 340 nm
  B) 210 nm
  C) 170 nm
  D) 420 nm
  E) 520 nm

Question 2

Calculate the current through a 10.0-m long 22 gauge (having radius 0.321 mm) nichrome wire if it is connected to a 12.0-V battery.
 
  The resistivity of nichrome is 100  10-8   m.
  A) 776 mA B) 30.9 A C) 17.5 A D) 388 mA E) 61.8 A

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Answer to Question 1

A

Answer to Question 2

D

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