Please Answer The Following Will Rate 1 (108.16 KiB) Viewed 26 times
In Rutherford's famous scattering experiments that led to the planetary model of the atom, alpha particles (having charges of +2e and masses of 6.64 x 10-27 kg) were fired toward a gold nucleus with charge +79e. An alpha particle, initially very far from the gold nucleus, is fired at 2.25 107 m/s directly toward the nucleus, as in the figure below. How close does the alpha particle get to the gold nucleus before turning around? Assume the gold nucleus remains stationary. x 79e + + 2e + + v=0 ++ + + + 1 m
The figure below shows a battery connected to a circuit. The potential difference across the battery and the resistance of each resistor is given in the figure. b + 25.0 V 3.00 12 3.00 Ω 12.0 12 12.0 Ω. 20.0 Ω a (a) What is the magnitude of the potential difference (in V) between points a and b in the circuit? V (b) What is the current (in A) in the 20.0 resistor? A
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