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.
2.
1.
Tube Rating
Charts
Name:
Directions: For the given information state if the technique is safe or unsafe and why.
60 Hertz Stator Operation
Effective Focal Spot Size- 0.6 mm
Peak Kilovolts
MA
2
150
140
130
120
110
100
90
80
70
2501
60
50
40
30
.01 .02 .04.06 .1
.2
.4.6 1
8 10
Maximum Exposure Time In Seconds
Is an exposure of 80 kVp, 0.1 second and 200 mA within the limits of the single
phase, 0.6 mm focal spot tube rating chart above?
Is an exposure of 100 kVp, 0.9 second and 150 mA within the limits of the single
phase, 0.6 mm focal spot tube rating chart above?
Q: You have a CO2 laser resonator (λ = 10.6 μm). It has two curved mirrors with
R₁=10m, R2= 8m, and mirror separation /= 5m. Find:
R2-10 m
tl
Z-O
12
R1-8 m
1. Confocal parameter. b= 21w2/2 =√1 (R1-1)(R2-1)(R1+R2-21)/R1+R2-21)
2. Beam waist at t₁ & t2-
3. Waist radius (wo).
4.
5.
The radius of the laser beam outside the resonator and about 0.5m from R₂-
Divergence angle.
6. Radius of curvature for phase front on the mirrors R₁ & R2-
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
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