Answer:
If by 1.5 MJ you mean 1.5E6 Joules then
W = P t = power X time
W / t = P power
P = 1.5E6 J / 600 sec = 2500 J / s
P = I V
a) I = 2500 J/s / (240 J/c) = 10.4 C / sec = 10.4 amps
b) Q = I t = 10.4 C / sec * 300 sec = 3120 Coulombs
c) E = P * t = 2500 J / sec * 100 hr * 3600 sec / hr = 9.0E8 Joules
Answer:
The steam engine of James watt is more efficient than Newcomen ans more suitable for the industrial revolution.
Explanation:
James Watt is more widely know for working steam engine because Watt has created better engine which is suitable for the industrial revolution. The steam engine of James watt is more efficient than Newcomen. Watt developed the condensing arrangement by using piston which lessen the initial pressure leading to effectively worked than Newcomen's
Answer:heat brings it up then down
Explanation:
Answer:
A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption.
Explanation:
A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption.
Answer:
![v = 3.5 \times 10^5 m/s](https://tex.z-dn.net/?f=v%20%3D%203.5%20%5Ctimes%2010%5E5%20m%2Fs)
Explanation:
At some distance from the Earth the force of attraction due to moon is balanced by the force due to Moon
so we will have
![\frac{GM_em}{r^2} = \frac{GM_m}{(d-r)^2}](https://tex.z-dn.net/?f=%5Cfrac%7BGM_em%7D%7Br%5E2%7D%20%3D%20%5Cfrac%7BGM_m%7D%7B%28d-r%29%5E2%7D)
now we have
![\frac{d - r}{r} = \sqrt{\frac{M_m}{M_e}}](https://tex.z-dn.net/?f=%5Cfrac%7Bd%20-%20r%7D%7Br%7D%20%3D%20%5Csqrt%7B%5Cfrac%7BM_m%7D%7BM_e%7D%7D)
![\frac{3.844\times 10^8 - r}{r} = \sqrt{\frac{7.36 \times 10^{22}}{5.9742\times 10^{24}}}](https://tex.z-dn.net/?f=%5Cfrac%7B3.844%5Ctimes%2010%5E8%20-%20r%7D%7Br%7D%20%3D%20%5Csqrt%7B%5Cfrac%7B7.36%20%5Ctimes%2010%5E%7B22%7D%7D%7B5.9742%5Ctimes%2010%5E%7B24%7D%7D%7D)
so we will have
![r = 3.46 \times 10^8 m](https://tex.z-dn.net/?f=r%20%3D%203.46%20%5Ctimes%2010%5E8%20m)
Now by energy conservation
![-\frac{GM_e}{R_e} - \frac{GM_m}{d - (R_e + R_m)} + \frac{1}{2}v^2 = -\frac{GM_e}{r} - \frac{GM_m}{d - r}](https://tex.z-dn.net/?f=-%5Cfrac%7BGM_e%7D%7BR_e%7D%20-%20%5Cfrac%7BGM_m%7D%7Bd%20-%20%28R_e%20%2B%20R_m%29%7D%20%2B%20%5Cfrac%7B1%7D%7B2%7Dv%5E2%20%3D%20-%5Cfrac%7BGM_e%7D%7Br%7D%20-%20%5Cfrac%7BGM_m%7D%7Bd%20-%20r%7D)
![-6.26 \times 10^{8} - 13046 + \frac{1}{2}v^2 = -1.15 \times 10^6 - 1.28 \times 10^5](https://tex.z-dn.net/?f=-6.26%20%5Ctimes%2010%5E%7B8%7D%20-%2013046%20%2B%20%5Cfrac%7B1%7D%7B2%7Dv%5E2%20%3D%20-1.15%20%5Ctimes%2010%5E6%20-%201.28%20%5Ctimes%2010%5E5)
![v = 3.5 \times 10^5 m/s](https://tex.z-dn.net/?f=v%20%3D%203.5%20%5Ctimes%2010%5E5%20m%2Fs)