What element has a K line with wavelength 1.46 10-11 m? A) ...

[burton19126]

What element has a K line with wavelength 1.46  10-11 m?
 
  A) Protactinium B) Niobium C) Uranium D) Zirconium

Question 2

A force on an object is given by F(x) = (2.00 N/m)x + (-3.00 N/m3)x3. What is a potential energy function for this conservative force?
 
  A)
 
  2.00 N/m - 9.00x2
  B)
 
  (-2.00 N/m)x2 + (3.00 N/m3)x4
  C)
 
  -2.00 N/m + (-3.00 N/m3)x2
  D)
 
  (-1.00 N/m)x2 + (0.750 N/m3)x4
  E)
 
  -2.00 N/m + 9.00x2

[jazzlynnnnn]

Answer to Question 1

C

Answer to Question 2

D

[burton19126]

TYSM

[vickybb89]

Excellent