A charge q = 3 10-6 C of mass m = 2 10-6 kg, and speed v = 5 ...

[amal]

A charge q = 3  10-6 C of mass m = 2  10-6 kg, and speed v = 5  106 m/s enters a uniform magnetic field. The mass experiences an acceleration a = 3  104 m/s2. What is the minimum magnetic field that would produce such an acceleration?
 
  A) 0.1 T
  B) 0.004 T
  C) 0.001 T
  D) 0.01 T
  E) 0.04 T

Question 2

Consider two diffraction gratings; one has 4000 lines per cm and the other one has 6000 lines per cm.
 
  A) The 4000-line grating produces the greater dispersion.
  B) Both gratings produce the same dispersion, but the orders are sharper for the 4000-line grating.
  C) Both gratings produce the same dispersion, but the orders are sharper for the 6000-line grating.
  D) The 6000-line grating produces the greater dispersion.

[ebenov]

Answer to Question 1

B

Answer to Question 2

D

[amal]

Gracias!

[lcapri7]

Excellent