THAT LINK IS A VIRUS NEVER GO TO A LINK and if you go to “goggle” you should see a camera icon and take a picture of the question and get the answer there
F=ma. So if you have the Force and the Acceleration you can find the mass. m=F/a. So the mass is 25kg
Explanation:
(a) The period of a wave is the time required for one complete cycle. In this case, we have the time of five cycles. So:
![T=\frac{t}{n}\\\\T=\frac{50.2s}{5}\\T=10.04s](https://tex.z-dn.net/?f=T%3D%5Cfrac%7Bt%7D%7Bn%7D%5C%5C%5C%5CT%3D%5Cfrac%7B50.2s%7D%7B5%7D%5C%5CT%3D10.04s)
(b) The frequency of a wave is inversely proportional to its period:
![f=\frac{1}{T}\\f=\frac{1}{10.04s}\\f=0.01Hz](https://tex.z-dn.net/?f=f%3D%5Cfrac%7B1%7D%7BT%7D%5C%5Cf%3D%5Cfrac%7B1%7D%7B10.04s%7D%5C%5Cf%3D0.01Hz)
(c) The wavelength is the distance between two successive crests, so:
![\lambda=30.2m](https://tex.z-dn.net/?f=%5Clambda%3D30.2m)
(d) The speed of a wave is defined as:
![v=f\lambda\\v=(0.1Hz)(30.2m)\\v=3.02\frac{m}{s}](https://tex.z-dn.net/?f=v%3Df%5Clambda%5C%5Cv%3D%280.1Hz%29%2830.2m%29%5C%5Cv%3D3.02%5Cfrac%7Bm%7D%7Bs%7D)
Additionally, the coefficient of thermal expansion of the restorative material should be comparable to the coefficient of thermal expansion of the tooth structure, since a significant difference between the two could result in thermal-induced stress at the cavity wall and subsequent marginal failure.
This study's objective was to assess how thermal stress affected the marginal integrity of restorative materials with various adhesive and thermal characteristics. As an alternative to clinical trials, which are expensive and time-consuming, evaluation of restorative materials under laboratory simulations of clinical function is frequently carried out. Thermal cycling regimens, which are in vitro techniques that subject the restoration and the tooth to extremely high temperatures, are frequently used in laboratory simulations to replicate thermal stresses that naturally occur in vivo.
Learn more about Thermal Stress here-
brainly.com/question/20309377
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Answer:
D = 26.97 m
Explanation:
given,
you walk 12.5 m in a direction exactly 19° south of west
after that 19.5 m in a direction exactly 39° west of north.
distance calculation from the starting point = ?
D₁ = d₁ cos θ
D₁ = 12.5 x cos 19°
D₁ = 11.82 m
D₂ = d₂ cos θ
D₂ = 19.5 x cos 39°
D₂ = 15.15 m
distance from the starting point
D = D₁ + D₂
D = 11.82 + 15.15
D = 26.97 m
Distance from the starting point is equal to 26.97 m