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(1). A 10.6-kg iron block at 203°C is quenched in an insulated 18.4-kg water bath initially at 18°C. After the iron and water reach thermal equilibrium with each other, what is the total change in entropy of the entire system (iron and water), in units ofkJ/K?
(2) Steam is compressed in an adiabatic, isentropic compressor at a mass flow rate of 14.9 lbm/s. Inlet conditions are 20 psia and 240°F, and the outlet pressure is 120 psia. Calculate the work power to this turbine in Btu/s.
Three resistors {R1 = 12.0 ?, R2 = 18.0 ?, and R3 = 36.0 ?} are connected in parallel, and in turn connected to a 70.0 V source with an internal resistance of 1.00 ?. What is the terminal potential of the source
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. calculate the heat lost by each body from the vaporization of sweat
a block is connected between two springs on a frictionless, horizontally level track. the other end of each spring is respectively anchored to a vertical pin set at opposite ends of the track. what is the spring constant of the other spring
at very low signal frequencies will the maximum values of i current through the resistor and v voltage across the
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, What is the magnitude of the electric field in the membrane
A uniform thin rod of length 0.778 m is hung from a horizontal nail passing through a small hole in the rod located 0.043 m from the rod\'s end
q1. a certain car battery with a 14.0 v emf has an initial charge of 195 abullh. assuming that the potential across the
Compute the speed of the water just before striking the turbine blades (neglect air resistance).
An electric power plant that would make use of the temperature gradient in the ocean has been proposed. What is the maximum efficiency of such a system
A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air through a 1.60 cm thick flat piece of crown glass and back to air again. The beam strikes the glass at a 35.0° incident angle.
A solid, uniform ball roll without slipping up a hill as shown. Initially, at the bottom of the hill, the ball has a linear speed of 25.0 m/s. How far from the foot of the cliff does the ball land
What is the magnitude of the force on an electron at a distance of 3.86 Angstrom from the thorium nucleus? What would the magnitude of the force be if the distance of the electron from thenucleus were doubled?
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