With what speed will helicopter hit the ground
A helicopter is traveling at 40 m/s at a constant altitude of 100 m over a level field. If a wheel falls off the helicopter, with what speed will it hit the ground? (air resistance negligible)
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7 g helium at 50 kPa and 200 K (ideal gas, M = 4, k = 5/3) are compressed polytropically in a quasistatic process with pv1.8 to 600 kPa. Find the final temperature of helium. find the work and heat interactions.
A jogger runs halfway around a circular path with a radius of 60 m. What are the magnitude of the displacement and the distance jogged?
Show that heat transfer during a process in which there is no work done by or on a system is independent of path.
The ball is in its trajectory for a total interval of 3.00 s before the third baseman catches it at an equal shoulder-height level. (Assume air resistance negligible.) What is the ball's horizontal displacement?
Why is the world record greater than the apparent ability of the pole-vaulter on the basis of a simplified conservation-of-energy analysis?
Estimate the length of time that the U.S. coal reserves of 2.5 × 1015 kg will last if they are used exclusively to provide 100 percent of the U.S. energy demand at a thermal efficiency of 35 percent.
The highest mountain on Mars is Olympus Mons, rising 22 000 m above the Martian surface. If we were to throw an object horizontally off the mountain top, how long would it take to reach the surface? (ignore atmospheric drag forces and use g Mars =
A large midwestern state administers a statewide mathematics exam that has an average of 500. A researcher is designing a study to test the idea that students from charter schools score higher than average on the test.
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