Physics, 24.03.2020 03:27 rainbowmc6
Which is the best definition of frequency?
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A. The time it takes for one full wave to pass a point
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B. The number of waves that pass a point in one second
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C. The speed at which a wave travels
O D. The distance between waves
Answers: 2
Physics, 22.06.2019 02:00, honeybaby675610
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, 23.06.2019 00:30, SpookyAlex2132
Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.
Answers: 1
Which is the best definition of frequency?
O
A. The time it takes for one full wave to p...
O
A. The time it takes for one full wave to p...
Mathematics, 26.05.2021 03:40
Mathematics, 26.05.2021 03:40
Mathematics, 26.05.2021 03:40