An alpha particle (with a charge of +2 e and a mass of 6.64 x 10-27 kg) is fıred at a fixed gold nucleus (with a charge of +79 e ) from very far away. The alpha particle makes it a point a distance of 2.0 x 106 m away from the gold nucleus before flying backwards away. A. Determine the potential energy of the alpha particle and gold nucleus pair when they are 2.0 x 10-6 m apart. B. What is the kinetic energy of the alpha particle when it reaches this turning point? How do you know? C. What is the potential energy of the alpha particle and gold nucleus pair when they are very far apart? How do you know? D. Determine the initial speed of the alpha particle (when it was very far away from the gold nucleus)

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An alpha particle (with a charge of +2
e
and a mass of 6.64 x 1027 kg) is fired at a fixed gold
nucleus (with a charge of +79
e
) from very far away. The alpha particle makes it a
point a distance of 2.0 x 106 m away from the gold
nucleus before flying backwards away.
A. Determine the potential energy of the alpha
particle and gold nucleus pair when they are 2.0 x
10-6 m apart.
B. What is the kinetic energy of the alpha particle
when it reaches this turning point? How do you
know?
C. What is the potential energy of the alpha particle
and gold nucleus pair when they are very far
apart? How do you know?
D. Determine the initial speed of the alpha particle
(when it was very far away from the gold nucleus).
Transcribed Image Text:An alpha particle (with a charge of +2 e and a mass of 6.64 x 1027 kg) is fired at a fixed gold nucleus (with a charge of +79 e ) from very far away. The alpha particle makes it a point a distance of 2.0 x 106 m away from the gold nucleus before flying backwards away. A. Determine the potential energy of the alpha particle and gold nucleus pair when they are 2.0 x 10-6 m apart. B. What is the kinetic energy of the alpha particle when it reaches this turning point? How do you know? C. What is the potential energy of the alpha particle and gold nucleus pair when they are very far apart? How do you know? D. Determine the initial speed of the alpha particle (when it was very far away from the gold nucleus).
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