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1. A proton is placed at point A, where the electric potential is 200 V ....

1. A proton is placed at point A, where the electric potential is 200 V . The proton is released from rest. Some time later, the proton has reached point B, where the electric potential is -120 V . What is the de Broglie wavelength of the proton when it reaches point B?

2.We then place an electron at point B and release it from rest. What is its de Broglie wavelength when it reaches point A?

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Answer #1

Potential difference Av=2004- (-1201) - 320V mass of Proton m=1.67X10 27 kg Charge of Proton q = 1.6x1019c. de Broglie wavele

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