What was the speed of the straw when it hit the tree
After a tornado, a 0.50 straw was found embedded 3.0 into the trunk of a tree.If the average force exerted on the straw by the tree was 85 , what was the speed of the straw when it hit the tree?
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An intergalactic rock star bangs his drum every 1.50 s. A person on earth measures that the time between beats is 2.10 s. How fast is the rock star moving relative to the earth?
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A 6.20-g lead bullet traveling at 480 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in
The mass flow rate is 1.25 kg/s. Using the ideal gas model, and neglecting potential energy effects, determine the exit area. Take cp,He to be 5.193 kJ/kg·K. Answer in m².
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