Physics, 27.06.2019 05:00 kevin72836
Read the question, and then use the drop-down menus to complete the paragraph. what is earth’s atmosphere made of? the most abundant gas in earth’s atmosphere is , followed by , which is needed to burn wood and fuel. the third-most abundant gas is . the amount of in the atmosphere is very small, making up just 0.33% of the atmosphere, but it is very important because plants use it to make simple sugars. another important gas is water vapor, which condenses around in the atmosphere to form clouds and then rain.
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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.
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Physics, 22.06.2019 12:00
If the new moon happens on january 15th, what shape will it be on february 6th?
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Physics, 22.06.2019 16:00
What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.
Answers: 3
Read the question, and then use the drop-down menus to complete the paragraph. what is earth’s atmos...
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