Response:
65.14 g
Clarification:
The entropy change resulting from mixing two metals is
![\delta S= R[(n_{cu}+n_{Ni})ln(n_{cu}+n_{Ni})-n_{cu}lnn_{cu}-n_{Ni}lnn_{Ni}]](https://tex.z-dn.net/?f=%5Cdelta%20S%3D%20R%5B%28n_%7Bcu%7D%2Bn_%7BNi%7D%29ln%28n_%7Bcu%7D%2Bn_%7BNi%7D%29-n_%7Bcu%7Dlnn_%7Bcu%7D-n_%7BNi%7Dlnn_%7BNi%7D%5D)
Here, R is the real gas constant, n_{cu} denotes the moles of copper, while n_{Ni} signifies the moles of nickel.
Therefore, determining the moles of Nickel yields
=1.7 moles
Then substituting n_{Ni} = 1.7 into the equation produces ΔS= 15,
with R= 8.314, and solving gives
![15= R[(n_{cu}+1.7)ln(n_{cu}+1.7)-n_{cu}lnn_{cu}-1.7ln1.7]](https://tex.z-dn.net/?f=15%3D%20R%5B%28n_%7Bcu%7D%2B1.7%29ln%28n_%7Bcu%7D%2B1.7%29-n_%7Bcu%7Dlnn_%7Bcu%7D-1.7ln1.7%5D)
Upon resolving, the quantity of moles of copper in the mixture equals
n_cu= 1.025
Thus, the copper mass is calculated as n_cu×M_cu = 1.025×63.55 = 65.14 g
Consequently, the required mass is found to be = 65.14 g
According to Newton's second law, Force equals the rate of change of momentum over time. Momentum change is equal to Force times time. So, F=ma can be rearranged to a=F/m, a more recognizable formulation of Newton's second law
Using a relevant kinematic equation for mass m: V=u+at; where initial speed u=0; thus, acceleration a=F/m gives V=(F/m)xt, which translates to t=mV/F. For mass 2m, applying the same formula: V=u+at; u=0; a=F/2m indicates V=(F/2m)xt, leading to t=2mV/F (possibly double the initial time)
I might have erred somewhere along the line, but the fundamental concept seems valid... using another kinematic equation for m: s=ut + (1/2)at²; with s=d; and initial speed u=0; a=F/m; t=1; results in d=(1/2)(F/m) = F/2m. Similarly, for 2m: s=ut + (1/2)at²; s=d; u=0; a=F/2m; and t=1 gives d=(1/2)(F/2m)=F/4m (half the distance perhaps???? WHAT???!)
These plants were utilized to eliminate harmful substances from the environment. In today's world, such crops have evolved into a significant asset and can be a source of profit when managed properly, creating multiple job opportunities along the way. Hope this information is useful.
The charge on the plastic cube is determined as follows.
The calculation for the horizontal component is performed as follows:
Vhorizontal = V · cos(angle)
For your instance, Vhorizontal = 16 · cos(40) equates to 12.3 m/s
Conclusion: 12.3 m/s
