What happens to the kinetic energy of a speedy proton when its relativistic mass doubles?

What happens to the kinetic energy of a speedy proton when its relativistic mass doubles?
 
  A) It doubles.
  B) It more than doubles.
  C) It less than doubles.
  D) It must increase, but it is impossible to say by how much.

Question 2

If sunlight of color B is scattered through an angle 16 times greater than sunlight of color A, then the wavelength of color B is
 
  A) twice that of color A.
  B) 1/2 that of color A.
  C) 16 times that of color A.
  D) 1/16 that of color A.
  E) 1/4 that of color A.

Question 3

The index of refraction for a certain material is 1.399 for red light and 1.432 for blue light. Find the angle separating the two refracted colors if the:
 
  (a) angle of incidence is 30.
  (b) angle of incidence is 60.

Question 4

A nearsighted person has a near point of 12. cm and a far point of 17. cm. If the lens is 2.0 cm from the eye:
 
  (a) what lens power will enable this person to see distant objects clearly?
  (b) what then will be the new near point?

Question 5

A 100-W driveway light bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.
 
  A) 3.65
  B) 7.30
  C) 21.40
  D) 36.50
  E) 73.00

Question 6

A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with respect to the magnetic field of strength 0.30 T.
 
  If the wire experiences a force of 0.18 N, what angle does the wire make with respect to the magnetic field?
  A) 20
  B) 25
  C) 30
  D) 35
  E) 60