How slow must a 200-g ball move to have a de Broglie wavelength ...

[sjones]

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]

Answer to Question 1

3.3  10-30 m/s

Answer to Question 2

B

[sjones]

Both answers were spot on, thank you once again

[jackie]

Great! Please up vote