Asked by jen

Convert 1.00 km/h to m/s using 1 km = 1000 m and 1 h = 3600 s
Answered by bobpursley
1km/hr * 1000m/km * 1hr/3600sec
Answered by stephanie
The Space Shuttle astronauts use a massing chair to measure their mass. The chair is attached to a spring and is free to oscillate back and forth. The frequency of the oscillation is measured and that is used to calculate the total mass m attached to the spring. If the spring constant of the spring k is measured in kg/s^2 and the chair's frequency f is 0.50 s-^1 for a 62-kg astronaut, what is the chair's frequency for a 75-kg astronaut? The chair itself has a mass of 10.0 kg. [Hint: use dimensional analysis to find out how f depends on m and k.]
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