Steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy is u1=2709.9 kj/kg, to state 2, where u2=2659.6 kj/kg. during the process there is heat transfer to the steam with a magnitude of 80 kj. also, a paddle wheel transfer energy to the steam by work in the amount of 18.5 kj. there is no significant change in the kinetic or potential energy of the steam. determine the energy transfer by work from the steam to the piston during the process, in kj. the mass of steam is 5kg.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

i think they are all correct

explanation:

they seem good

your answer is, orbit around the nucleus