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Newton Force Meter Spring Scale - Maximum Capacity 10N, 1 kg, Dual Scale Labeled. Dynamometer Bar Physics Mechanical Experiment Instrument: Amazon.com: Industrial & Scientific
Why is the speed of an aircraft measured as mach x? The speed of sound is dependent on air pressure hence at ground level it's faster than at say 30,000 ft -
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Amazon.com: Sci-Supply Newton Force Meter Spring Scale - Max Capacity 3000g/30N, Dual Scale Labeled White Scale (1) : Industrial & Scientific
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