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Author Question: What mass of 14C (having a half-life of 5730 years) do you need to provide a decay rate of 280.0 Bq? ... (Read 186 times)

leilurhhh

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on: Jul 29, 2018
What mass of 14C (having a half-life of 5730 years) do you need to provide a decay rate of 280.0 Bq? (1 u = 1.6605  10-27 kg)
 
  A) 1.70  10-12 kg
  B) 5.38  10-19 kg
  C) 3.84  10-20 kg
  D) 8.68  10-13 kg

Question 2

A very long thin wire produces a magnetic field of 0.0050  10-4 T at a distance of 3.0 mm. from the central axis of the wire. What is the magnitude of the current in the wire? (0 = 4  10-7 T  m/
 
  A)
  A) 7.5 mA
  B) 1.7 mA
  C) 3300 mA
  D) 24,000 mA


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lkoler

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


leilurhhh

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Reply 2 on: Jul 29, 2018
Gracias!

jomama

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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