What is the result of the calculation (0.410 + 0.021 ) (2.20 ...

[jake]

What is the result of the calculation (0.410 + 0.021 )  (2.20  103 )?
 
  A) 880
  B) 946
  C) 948
  D) 950

Question 2

A laser beam has a wavelength of 633 nm and a power of 0.500 mW spread uniformly over a circle 1.20 mm in diameter.
 
  This beam falls perpendicularly on a perfectly reflecting piece of paper having twice the diameter of the laser beam and a mass of 1.50 mg. (c = 3.00  108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)
  (a) What are the amplitudes of the electric and magnetic fields in this laser beam?
  (b) What acceleration does the laser beam give to the paper?

[Sammyo]

Answer to Question 1

C

Answer to Question 2

(a) 577 N/C, 1.92 T (b) 2.22 m/s2