Calculate the de broglie wavelength of (a) a mass of 1.0 g traveling at 1.0 m s−1 , (b) the same, traveling at 1.00 × 105 km s−1 , (c) an he atom traveling at 1000 m s−1 (a typical speed at room temperature), (d) yourself traveling at 8 km h−1 , and (e) yourself at rest.

a)

b)

c)

d)m

e)λ=∞

Explanation:

De Broglie discovered that an electron or other mass particles can have a wavelength associated, and that wavelength (λ) is:

with h the Plank's constant () and P the momentum of the object that is mass (m) times velocity (v).

a)

b)

c)

d)

m

e)

λ=∞

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6