How to solve this photoelectric equation involving specific heat capacity

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The discussion focuses on calculating the rate at which cooling fluid must circulate through an x-ray tube's anode to maintain a temperature of 35 degrees Celsius, given specific parameters. The relevant equation incorporates voltage, current, number of electrons, electron velocity, speed of light, mass of the electron, Planck's constant, and specific heat capacity. Substituting the provided values into the equation yields a circulation rate of 17.3 x 10^5 kg/s. The calculation neglects the kinetic energy converted into x-rays. This result is essential for ensuring the proper functioning of the x-ray tube.
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We have the parameters,current =10^-3A,V=15kv,number of electrons=6.25 X 10^15,velocity=7.3 X 10^7,specific heat capacity of the liquid=2 X 10^3,c=3 X 10^8,h=6.63 X 10^-34,mass of electron = 9.11 X 10^-31. Now the question says,in an x-ray tube having those parameters,find the rate at which cooling fluid entering at 10 degree centigrade must circulate through the anode temperature if the anode temperature is to be maintained at 35 degree centigrade. Neglect box of the kinetic energy which is converted into x-rays.
 
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The rate at which cooling fluid must circulate through the anode is given by:Q = (V*I*N*V*c*m)/(h*Specific Heat Capacity)Where Q is the rate at which cooling fluid must circulate through the anode, V is the voltage, I is the current, N is the number of electrons, V is the velocity of the electrons, c is the speed of light, m is the mass of the electron, h is Planck's constant, and Specific Heat Capacity is the specific heat capacity of the liquid.Substituting the given values into the equation, we get:Q = (15000V*10^-3A*6.25 x 10^15*7.3 x 10^7m/s*3 x 10^8m/s*9.11 x 10^-31kg)/(6.63 x 10^-34J*s*2 x 10^3 J/kg*K)Q = 17.3 x 10^5 kg/sTherefore, the rate at which cooling fluid must circulate through the anode is 17.3 x 10^5 kg/s in order to maintain the anode temperature at 35 degree centigrade.
 
Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?

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