Author Question: How slow must a 200-g ball move to have a de Broglie wavelength of 1.0 mm? (h = 6.626 10-34 J s) ... (Read 27 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
How slow must a 200-g ball move to have a de Broglie wavelength of 1.0 mm? (h = 6.626  10-34 J  s)
 
  What will be an ideal response?

Question 2

In an electroplating process, copper (ionic charge +2e, atomic weight 63.6 g/mol) is deposited using a current of 10.0 A. What mass of copper is deposited in 10.0 minutes? Avogadro's number is 6.022  1023 molecules/mol and e = 1.60  10-19 C.
 
  A) 3.96 g B) 1.98 g C) 0.99 g D) 2.52 g E) 2.53 g



jackie

  • Sr. Member
  • ****
  • Posts: 324
Answer to Question 1

3.3  10-30 m/s

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

sjones

  • Hero Member
  • *****
  • Posts: 520
Both answers were spot on, thank you once again



jackie

  • Sr. Member
  • ****
  • Posts: 324

 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

For a complete list of videos, visit our video library