shaylawaldo11
02.08.2019 •
Physics
Military specifications often call for electronic devices to be able to withstand accelerations of 10 g. to make sure that their products meet this specification, manufacturers test them using a shaking table that can vibrate a device at various specified frequencies and amplitudes. if a device is given a vibration of amplitude 9.4 cm, what should be its frequency in order to test for compliance with the 10 g military specification? the acceleration of gravity is 9.81 m/s 2 . answer in units of hz.
Solved
Show answers
More tips
Answers on questions: Physics
- P Physics What is the velocity of a wave with a frequency of 300 Hz and a wavelength of 0.45 m?...
- P Physics What are some changes that can be caused. by sound energy...
- P Physics Which formulas have been correctly rearranged to solve for radius? check all that apply. r = gm central/v^2 r =fcm/v^2 r =ac/v^2 r =vt/2pi r =act/pi...
- P Physics Juils what step of the scientific method immediately follows state the problem ?...
- P Physics What is the independent variable on the graph below...
- P Physics Can someone me it is just really hard and im tryna get the work done before the end of the day. ps.. mods idk if its chemistry or physics so if i got the title wrong...
- P Physics Hold a pencil in front of your eye at a position where its blunt end just blocks out the moon. make appropriate measurements to estimate the diameter of the moon,...
- P Physics Aflask weights 45.4 g when it is empty and 121.8 g when filled with water. when the same flask is filled with another liquid, the mass is 91.39 g. what is the density...
- P Physics Aparallel-plate capacitor is constructed of two square plates, size l×l, separated by distance d. the plates are given charge ±q. let s consider how the electric field...
- P Physics Suspend a u tape from a thread or a hair. hold the thread or hair in your hand, or use a short piece of tape to stick the upper end of the thread or hair to the meterstick....
Ответ:
(10 x 9.8) = 98.1 m/sec^2 acceleration. Time, to travel 9.4cm or (.094m.), at acceleration of 98m/sec^2
= sqrt(2d/a), = sqrt (98.1 m/sec^2/0.094m) = 32.3050619 sec per cycle
Frequency = (w/2pi), = 32.3050619/2pi
= 32.3050619/6.28318531
= 5.14 Hz would be the answer
Ответ:
(a) Increasing in the interval (-623, 2) and (623, ∞)
f is decreasing in the interval (∞, -623) and (2, - 623).
(b) Local maximum is f = 2 .
2 local minima f = -623.
Step-by-step explanation:
f(x) = x^4 - 50x^2 + 2
Finding the derivative:
f'(x) = 4x^3 - 100x
This = 0 at a turning point:
4x(x^2 - 25) = 0
x = 0, x + -5, 5.
Find the second derivative:
f"(x) = 12x^2 - 100
When x = 0 f(x) = 2
When x = 0, f"(x) is negative so the point (0, 2) is a maximum .
When x = -5, f"(x) is positive . Also positive when x = 5.
So the 2 local minimums are (-5, (-5)^4 - 50(-5)^2 + 2) = (-5, -623) and
(5, -623).