Answer:
![g'=9.3345\ m.s^{-2}](https://tex.z-dn.net/?f=g%27%3D9.3345%5C%20m.s%5E%7B-2%7D)
Explanation:
The minimum height of a space shuttle from the surface of the earth is 304 kilometers.
So according to this data we calculate the value to g at that height.
We have the formula:
![g'=g(1-\frac{2h}{R} )](https://tex.z-dn.net/?f=g%27%3Dg%281-%5Cfrac%7B2h%7D%7BR%7D%20%29)
where:
g' = the acceleration due to gravity at the given height 'h' above the earth
R = radius of the earth
g = the acceleration due to gravity at the surface of the earth
Now, using eq. (1)
![g'=9.8(1-\frac{304\times 10^3}{64000\times 10^3} )](https://tex.z-dn.net/?f=g%27%3D9.8%281-%5Cfrac%7B304%5Ctimes%2010%5E3%7D%7B64000%5Ctimes%2010%5E3%7D%20%29)
![g'=9.3345\ m.s^{-2}](https://tex.z-dn.net/?f=g%27%3D9.3345%5C%20m.s%5E%7B-2%7D)
Answer:strength or power to sustain mental or physical activity
Explanation:
Answer:
![-270.321012\ J](https://tex.z-dn.net/?f=-270.321012%5C%20J)
Explanation:
= Heat capacity of Hg = 28 J/mol
= Change in temperature = ![(234.32-(273.15+25))](https://tex.z-dn.net/?f=%28234.32-%28273.15%2B25%29%29)
= Enthalpy of fusion = 2.29 kJ/mol
The number of moles is given by
![n=13.3\times \dfrac{1}{200.59}\\\Rightarrow n=0.0663\ molHg](https://tex.z-dn.net/?f=n%3D13.3%5Ctimes%20%5Cdfrac%7B1%7D%7B200.59%7D%5C%5C%5CRightarrow%20n%3D0.0663%5C%20molHg)
Heat is given by
![Q_1=nC_v\Delta T\\\Rightarrow Q_1=0.0663\times 28\times (234.32-(273.15+25))\\\Rightarrow Q_1=-118.494012\ J](https://tex.z-dn.net/?f=Q_1%3DnC_v%5CDelta%20T%5C%5C%5CRightarrow%20Q_1%3D0.0663%5Ctimes%2028%5Ctimes%20%28234.32-%28273.15%2B25%29%29%5C%5C%5CRightarrow%20Q_1%3D-118.494012%5C%20J)
Heat released is given by
![Q_2=-n\Delta H_{f}\\\Rightarrow Q_2=-0.0663\times 2.29\times 10^3\\\Rightarrow Q_2=-151.827\ J](https://tex.z-dn.net/?f=Q_2%3D-n%5CDelta%20H_%7Bf%7D%5C%5C%5CRightarrow%20Q_2%3D-0.0663%5Ctimes%202.29%5Ctimes%2010%5E3%5C%5C%5CRightarrow%20Q_2%3D-151.827%5C%20J)
Total heat is given by
![Q=Q_1+Q_2\\\Rightarrow Q=-118.494012+(-151.827)\\\Rightarrow Q=-270.321012\ J](https://tex.z-dn.net/?f=Q%3DQ_1%2BQ_2%5C%5C%5CRightarrow%20Q%3D-118.494012%2B%28-151.827%29%5C%5C%5CRightarrow%20Q%3D-270.321012%5C%20J)
The total heat released is ![-270.321012\ J](https://tex.z-dn.net/?f=-270.321012%5C%20J)