A mass-spring-damper system has a mass of 100 kg. Its free response amplitude decays such that the amplitude of the 30th cycle is 20% of the amplitude of the 1st cycle. It takes 60 s to complete 30 cycles. Estimate the damping constant c and the spring constant k.
Answers: 3
Physics, 21.06.2019 22:00, sophiamoser
In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i. e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?
Answers: 2
Physics, 22.06.2019 07:50, babbybronx
Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?
Answers: 1
Physics, 22.06.2019 12:20, cxttiemsp021
Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?
Answers: 2
Physics, 23.06.2019 18:00, candycrush24
Which applications, either for diagnostic purposes or for therapeutic purposes, involve radioactive materials placed in the body? check all that apply. radiopharmaceuticals mri laser eye surgery external beam radiation therapy lithotripsy brachytherapy radioisotope imaging
Answers: 1
A mass-spring-damper system has a mass of 100 kg. Its free response amplitude decays such that the a...
Mathematics, 27.06.2021 23:50
Mathematics, 27.06.2021 23:50
Mathematics, 27.06.2021 23:50
English, 27.06.2021 23:50
Mathematics, 27.06.2021 23:50