Physics, 17.01.2022 17:50 jetblackcap
an electromagnetic wave travels in a straight line through a vacuum. The wave has a frequency of 6.0THz. What is the number of wavelengths in a distance of 1.0m along the wave?
Answers: 2
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 02:00
In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong
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Physics, 22.06.2019 05:30
What are similarities and differences of reflection, refraction, diffraction and absorption?
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Physics, 22.06.2019 07:30
The slope of a velocity time graph over any interval of time gives the during that interval
Answers: 1
an electromagnetic wave travels in a straight line through a vacuum. The wave has a frequency of 6.0...
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