Tag Archives: 40

(Clouds at) 40 (,000 feet)

20,000 feet = 6,096 meters (10+3 ) 40,000 feet = 12,192 meters (10+4 ) 60,000 feet = 18,288 meters (10+4 ) Cirrus (Ci), Cirrostratus (Cs) and Cirrocumulus (Cc) are always the highest out of low, middle and high clouds.  The temperature of the air (polar ice cap vs. equator) determines the elevation of the clouds.   [...]

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71 (BPM)

Is a heart rate (or pulse rate) of 71 BPM (beats per minute) considered healthy for a human body (100) ?  Yes. From the Mayo clinic… “For an adult, a normal resting heart rate ranges from 60 to 100 beats a minute. For a well-trained athlete, a normal resting heart rate may be closer to [...]

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  • Countdown to Powers of Ten Day

    • 10/10/10 1410 days ago