Arigid copper tank, initially containing 1 m3 of air at 295k, 5 bar, is connected by a valve to a large supply line carrying air at 295k, 15 bar. the valve is opened only as long as required to fill the tank with air to a pressure of 15 bar, at which point the air in the tank is at 310k. the copper tank, which has a mass of 20 kg, is at the same temperature as the air in the tank, both initially and finally. the specific heat of the copper is c = 0.385 kj/kg-k. assuming ideal gas behavior for the air, determine (a) the initial and final mass of air within the tank, each in kg, and (b) the heat transfer to the surroundings from the tank and its contents, in kj, ignoring kinetic and potential energy effects. (630)

Domain eukarya; kingdom plantae should be the answer.

What does the start look like

Answer: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same sign as the  -4.0  µc charge.======electricstatic force between two point charges  is given by    where k is coulomb's constant,  8.99×10⁹  n·m²/c², q₁ and q₂ are the point charges, and r is the distance between the two point charges.assign positive to q₁let q₁ =  6.0 µc, q₂ = -4.0  µc, q₀ represent the charge at the origin, and q₃ represent this new charge to place.the charge at the origin q₀ would experience the following force f₀₁ from q₁, with r = 6.0 m (note that 1  µc = 10⁻⁶ c)    the force from q₂    the force from q₃    the net force on the origin charge, q₀, has to be zero for no electrostatic forcehaving an equation where k and q₀ can be divided out of the equation will allow us to solve for q₃    isolating:     a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same as the  -4.0  µc charge

Answer choice a test prep