A uniform magnetic field of 0.50 T is directed along the positive ...

[kshipps]

A uniform magnetic field of 0.50 T is directed along the positive x axis. A proton moving with a speed of 60 km/s enters this field. The helical path followed by the proton shown has a pitch of 5.0 mm. Determine the angle between the magnetic field and the velocity of the proton.
 
   

   
  a.
  39
   
  b.
  51
   
  c.
  44
   
  d.
  34
   
  e.
  71

Question 2

A wire (mass = 50 g, length = 40 cm) is suspended horizontally by two vertical wires which conduct a current I = 8.0 A, as shown in the figure. The magnetic field in the region is into the paper and has a magnitude of 60 mT. What is the tension in either wire?
 
   

   
  a.
  0.15 N
   
  b.
  0.68 N
   
  c.
  0.30 N
   
  d.
  0.34 N
   
  e.
  0.10 N

[Jsherida]

Answer to Question 1

b

Answer to Question 2

d

[kshipps]

Thank you!

[Jsherida]

Always glad to help...