Part C is incorrect please show steps for the correct answer An electron has a d

Question

Part C is incorrect please show steps for the correct answer

An electron has a de Broglie wavelength lambda = 5.3 times 10^-10 m. h = 6.626 times 10^-34 J middot s. e = 1.602 times 10^-19 C, m_e = 9.109 times 10^-31 kg. What is its momentum? Express your answer to two significant figures and Include the appropriate units. P = 1.25 times 10^-24 kg m/s What is its speed? Express your answer to two significant figures and include the appropriate units. upsilon = 1.4 times 10^6 m/s What voltage was needed to accelerate it from rest to this speed? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

from energy Conservations

KE = Elecrical P E

0.5 mv^2 = eV

1.6*10^-19 * V = 0.5* 9.11 *10^-31 * 1.4*10^6 *1.4 *10^6

V = 5.57 Volts

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