Physics, 22.05.2020 22:03, canonmille2
In order to get going fast, eagles will use a technique called stooping, in which they dive nearly straight down and tuck in their wings to reduce their surface area. While stooping, a 6- kg golden eagle can reach speeds of up to 53 m/s . While golden eagles are not very vocal, they sometimes make a weak, high-pitched sound. Suppose that while traveling at maximum speed, a golden eagle heads directly towards a pigeon while emitting a sound at 1.1 kHz. The emitted sound has a sound intensity level of 30 dB when heard at a distance of 5 m .
Part A: Not So Free Fallinā
Model this stooping golden eagle as an object moving at terminal velocity. The eagleās drag coefficient is 0.5 and the density of air is 1.2 kg/m 3 . What is the effective cross-sectional area of the eagleās body while stooping?
Part B: The Doppler Effect
What is the doppler-shifted frequency that the pigeon will hear coming from the eagle?
Part C: Dangerous Decibels?
Consider the moment when the pigeon is 5 m away from the eagle. At the pigeonās position, what is the intensity (in W/m 2 ) of the sound the eagle makes?
Part D: The Catch
The golden eagle slams into the 250- g pigeon, which is initially moving at 10 m/s in the opposite direction (toward the eagle). The eagle grabs the pigeon in its talons, and they move off together in a perfectly inelastic collision. How fast do they move after the collision?
Answers: 1
Physics, 22.06.2019 05:50, Dweath50
Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. youāll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if youāre not sure, write down questions you might have about the features.
Answers: 3
Physics, 22.06.2019 08:00, plshelpme53
A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n
Answers: 2
In order to get going fast, eagles will use a technique called stooping, in which they dive nearly s...
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