Which of the following transitions in hydrogen produces the photons with the longest wavelengths in the Balmer series?
1. n = 6 to n = 2
2. n = 6 to n = 3
3. n = 3 to n = 2
4. n = 2 to n = 1
3
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Indicate whether the statement is true or false
In alpha decay, the Q-value and the kinetic energy of the alpha particle
A) have no trend in the relative size. B) are different with the Q-value larger. C) are different with the kinetic energy larger. D) are the same. E) cannot be determined.
A baseball player is running to second base at 5.03 m/s. When he is 4.80 m from the plate he goes into a slide. The coefficient of kinetic friction between the player and the ground is 0.180. What is his speed when he reaches the plate?
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When the input piston of a hydraulic press is depressed 20 cm, the output piston is observed to move 1 cm. An input force of 1 N can raise no more than
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