How long mailbag reach the ground
The height of a helicopter above the ground is given by h = 2.95t^3, where h is in meters and t is in seconds. At t = 2.50 s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground?
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Adcock Corp. had $500,000 net income in 2007. On January 1, 2007 there were 200,000 shares of common stock outstanding. On April 1, 20,000.
A student in a laboratory course on quality control methods measures the length of a bolt several times. When would it be reasonable to consider these measurement a random sample? What is the population?
A truck covers 42.0 m in 8.10 s while smoothly slowing down to final speed of 2.70 m/s. (a) Find its original speed. (b) Find its acceleration. (Indicate the direction of the acceleration with the sign of your answer.)
An employee earns $ 40 per hour and 1.75 times that rate for all hours in excess of 40 hours per week. Assume that the employee worked 60 hours during the week.
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The frequncy doubled output of a laser has a wavelength of 532nm. If each pulse of light has a total energy of 0.550J and the repetition rate of the laser is 30Hz, how many photons does the laser emit at 532 nm in 3 minutes?
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