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lutik1710 [3]
3 years ago
11

What is the wavelength associated with an electron with a velocity of 4.8x10*5 m/s?

Physics
1 answer:
jarptica [38.1K]3 years ago
8 0

Answer:

Explanation:

Given the following data;

Mass = 9.1 X 10^{-31} kg

Velocity = 4.8x10⁵ m/s

Planck’s constant ( h ) = 6.6262 * 10^{-34}

To find the wavelength;

Applying de broglie's equation;

Wavelength = h/mv

Wavelength = ) = 6.6262 * 10^{-34}/(9.1 X 10^{-31} * 4.8x10⁵)

Wavelength = 1.52 * 10^{-71} meters

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From the the question, the mass of the man =70.0 kg and the speed at which the man is walking =2.0 m/s.

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By substitution,

K.E =  \frac{1}{2} \times 70 \times  {2}^{2}

\implies \: K.E = \frac{280}{2}

\implies K.E =140

Hence the kinetic energy of the man is 140J

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