61. What is the de Broglie wavelength for a proton (m = 1.67x10^-27 kg) moving at a speed of 6.0 x10^6 m/s? (h = 6.63 x10-34 J·s)

a. 2.0 x 10^-13 m

b. 0.33 x 10^-13 m

c. 1.3 x 10^-13 m

d. 0.66 x 10^-13 m

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