Answer:
Definitive
Explanation:
Definitive estimate should be done very early in a project or even before a project is officially started and is used for making many purchasing decisions for which accurate estimates are required and for estimating final project costs. Therefore, if the cost estimate for a project is a basis for contract awards and performance reporting, it should be definitive estimate and as accurate as possible.
Answer:
Explanation:
The correct formula for the potential energy between two atoms in a particular molecule is:
Where 
is the distance.
According to the definitions of potential energy and work, as well as the Work-Energy Theorem and the Principle of Energy Conservation. The relation between that and related force is:
The function is derived in terms of distance:
Then, it is needed to find at least of x so that F(x) equals to 0.
![x=\sqrt[4]{\frac{84}{104} }](https://tex.z-dn.net/?f=x%3D%5Csqrt%5B4%5D%7B%5Cfrac%7B84%7D%7B104%7D%20%7D)
<span>Old age and hundreds of thousands to millions of member stars.</span>
Scientific law are proven scientific fact a theory isn’t it could be if you provide details of how it is a fact with investigations and observations,data and etc
Answer:
The maximum kinetic energy of the photoelectrons ejected from the surface is 5.22×10^-20 J.
Explanation:
let h = 6.626×10^-34 J×s be the planck constant.
let f be the frequency of light.
let Ф = 2.20×1.60×10^-19 = 3.52×10^-19 J be the work function.
then, the relationship between the kinetic energy of photoelectrons K, the energy provided by the light E and the work function of the material is given by:
K = h×f - Ф
= (6.626×10^-34)×(6.10×10^14) - 3.52×10^-19
= 5.22×10^-20 J
Therefore, the maximum kinetic energy of the photoelectrons ejected from the surface is 5.22×10^-20 J.
