If 241 g of water is contained in a 347 g aluminumvessel at 14!C and an additional 104 gof water at 92!C is poured into the container,what is the final equilibrium temperature ofthe mixture? The specific heat of aluminumis 900 J/kg ·!C and of water 4186 J/kg ·!C.

 

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This is a communication theory problem.

Can you show the steps clearly? Thank you

If3 ) A random process * ( + ) has power density spectrum , SY ( f ) =COS2 BOIf I BOO ,otherwiseWe pass the random process through a low- pass filter having frequency response ,H ( F ) = }| 1, If KBp10 , otherwise, to produce a random process , * ( + ) .a ) Find and sketch ( precise labels ! ) the power density spectrum of * ( + ) , whenB = BO 1 2 .b ) Find Var ( Y ( t ) as a function of By .

 

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If 5 bulbs on an average of all the electric bulbs manufactured by a company are defective. Find the probability that:

a) None are defective

b) 5 bulbs are defective

c) At most two bulbs are defective

d) At least two bulbs are defective

 

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If 500mL of 1M Ba(NO3)2 (aq) solution at temperature of 25C is mixed with 500mL of 1M Na2SO4 (aq) solution at 25C in a “coffee cup” calorimeter, the temperature of the mixture rises to 28.1C and the white precipitate BaSO4 forms according to the net ionic reaction:

Ba (aq) + SO4 (aq) –> BaSO4 (s)

Calculate enthalpy change for this reaction per mole of BaSO4 formed. Assume no heat is lost to calorimeter and both the specific heat and density of this mixture is the same as that of water.

 

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