Amass is bouncing up and down (oscillating) on a spring. It takes 0.6 sec to go from the highest to the lowest position, a distance of 8 cm. 1. What is the amplitude of the motion? 2. What is the period of the motion? 3, What is the frequency of the motion? 4. How many oscillations does it make in 9 seconds? Some red light has a wavelength of 620 nm (nanometers). 5. What is the speed of the light? 6. What is the frequency of the light? 7. Some blue light has wavelength 460 nm. Is it faster, slower, or the same speed as the red light? 8. Does the blue light have higher, lower, or the same frequency as the red light? 9. Do red light or blue light photons have more energy, or are they the same? You generate a sound wave of420 Hz with a speaker. The speed of sound is 342 m/s. 10. What is the wavelength of the sound? 11. You are 2 m from the speaker. You back up until you are 6 m from the speaker. What happens to the intensity of the sound you hear? Does it decrease by a factor of 2, 3, 6, or something else? 12. You are 2 m from the speaker. You hear a loudness of 48 dB. You back up until you are 4 m away. The loudness you hear now is a) 24 dB b) 12dB e) 45 dB d) 42dB l3. Apolice car with its siren emitting sound at 440 Hz is moving away from you at 30 m/s. The frequency of the sound you hear is a) 440 Hz b) less than 440 Hz c) greater than 440 Hz 14. Some light from a distant star is emitted with wavelength 570 rim. The star is moving toward us at very high speed. The wavelength of the light we see is a) 570 rim b) less than 570 nm "blue-shifted" c) greater than 570 rim \"red- shifted" 15. A sound has a loudness of54 dB. You double the intensity of the sound. The new loudness is a) 108 dB b) still 54 dB c) 57 dB (1) 51 dB 16. Nuclei that undergo alpha decay have their atomic number a) increase by two b) increase by four c) decrease by two (1) decrease by fOur e) not change 17. For a nucleus to increase its atomic number, it must undergo a) alpha decay b) beta minus decay c) beta plus decay (1) alpha decay