Physics, 06.12.2019 02:31 alondrasanchezvillan
In a container of negligible mass, 0.400 kg of ice at an initial temperature of -29.0 ∘c is mixed with a mass m of water that has an initial temperature of 80.0∘c. no heat is lost to the surroundings. part aif the final temperature of the system is 26.0 ∘c, what is the mass m of the water that was initially at 80.0∘c?
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Physics, 22.06.2019 02:00
Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.
Answers: 1
Physics, 22.06.2019 12:30
Write a full page that sumerizes thermodynamics it’s from the website visionlearnig
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Physics, 22.06.2019 14:50
Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two
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In a container of negligible mass, 0.400 kg of ice at an initial temperature of -29.0 ∘c is mixed wi...
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