Predict/Calculate The Longitude Problem In 1759, John Harrison (1693-1776) completed his fourth precision chronometer, the H4 which eventually won the celebrated Longitude Prize. (For the human drama behind the Longitude Prize, see Longitude , by Dava Sobel.)When the minute hand of the H4 indicates 10 minutes past the hour, it extends 3.0 cm in the horizontal direction. (a) How long is the H4’s minute hand? (b) At 10 minutes past the hour, is the extension of the minute hand in the vertical direction more than less than, or equal to 3.0 cm? Explain. (c) Calculate the vertical extension of the minute hand at 10 minutes past the hour. Not just a watch! The Harrison H4. (Problem 79)
Predict/Calculate The Longitude Problem In 1759, John Harrison (1693-1776) completed his fourth precision chronometer, the H4 which eventually won the celebrated Longitude Prize. (For the human drama behind the Longitude Prize, see Longitude , by Dava Sobel.)When the minute hand of the H4 indicates 10 minutes past the hour, it extends 3.0 cm in the horizontal direction. (a) How long is the H4’s minute hand? (b) At 10 minutes past the hour, is the extension of the minute hand in the vertical direction more than less than, or equal to 3.0 cm? Explain. (c) Calculate the vertical extension of the minute hand at 10 minutes past the hour. Not just a watch! The Harrison H4. (Problem 79)
Predict/Calculate The Longitude Problem In 1759, John Harrison (1693-1776) completed his fourth precision chronometer, the H4 which eventually won the celebrated Longitude Prize. (For the human drama behind the Longitude Prize, see Longitude, by Dava Sobel.)When the minute hand of the H4 indicates 10 minutes past the hour, it extends 3.0 cm in the horizontal direction. (a) How long is the H4’s minute hand? (b) At 10 minutes past the hour, is the extension of the minute hand in the vertical direction more than less than, or equal to 3.0 cm? Explain. (c) Calculate the vertical extension of the minute hand at 10 minutes past the hour.
At point A, 3.20 m from a small source of sound that is emitting uniformly in all directions, the intensity level is 58.0 dB. What is the intensity of the sound at A? How far from the source must you go so that the intensity is one-fourth of what it was at A? How far must you go so that the sound level is one-fourth of what it was at A?
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