Work is done on an adiabatic system due to which its velocity changes from 10 m/s to 20 m/s, elevation increases by 20 m and temperature increases by 1 K. The mass of the system is 10 kg, Cv = 100 J/kg-K and gravitational acceleration is 10 m/s² .if there is no change in any other component of the energy of the system, find out the magnitude of total work done on the system.

Work is done on an adiabatic system due to which its velocity changes from 10 m/s to 20 m/s, elevation increases by 20 m and temperature increases by 1 K. The mass of the system is 10 kg, Cv = 100 J/kg-K and gravitational acceleration is 10 m/s² .if there is no change in any other component of the energy of the system, find out the magnitude of total work done on the system.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

For a system having a mass of 1 lb whose velocity increasesfrom 50 ft/s to 100 ft/s while its elevation decreases by 40 ft ata location where g= 32.0 ft/s2, Determine: Change in Kinetic Energy in BTU Change in Potential Energy BTU
Three hundred kilojoules of heat is added in a piston cylinder arrangement containing air causing it to expand in a polytropic process. If the polytropic exponent is 1.2 (PV^1.2 = c), determine the work done.
If the energy crossing the boundary of a closed system is not heat, it must be work?
A nonflow system has a mass of 5 lb. in it. The system undergoes a process during which 200 ft.lbf of heat is transferred to the surroundings. If the system does 1000 ft.·lbf of work on the surroundings, determine the change in specific internal energy of the fluid in lbf/lbm.
A fluid flowing in a pipe 1000 ft above the reference line at a pressure of 200 psia, specific volume of 2 ft3 /lb, velocity of 200 ft/sec and internal energy of 100 Btu/lbm. Determine (a) the total energy of the flowing fluid with respect to the reference line and (b) the specific enthalpy in Btu/lbm . Local gravity is 32 ft/sec2 .
Determine the specific kinetic energy of a mass whose velocity is 30 m/s, in kJ/kg.
While the pressure remains constant at 689.2 kPa, the volume of a system of air changes from 0.567 m3 to 0.238 m3. What will be the change in internal energy?
During a process, 50 kJ of work is done on a closed system while 20 kJ of heat is lost from the system. If the initial internal energy of the system is 90 kJ, what is the final internal energy of the system?
The force F required to compress a spring a distance x is given by F – F0 = kx where k is the spring constant and F0 is the preload. Determine the work, in kJ, required to compress a spring a distance of 1 cm when its spring constant is 300 N/cm and the spring is initially compressed by a force of 100 N.
In what forms can energy cross the boundaries of a closed system?
1. A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079 lb/ft^3 and discharge it with density of 0.304 lb/ft^3. At the suction P1=15 psia; at discharge, P2=80 psia. The increase in the specific internal energy is 33.8 BTU/lb and the heat transferred from the air by cooling is 13 BTU/lb. Determine the work on the air in BTU/lb. Neglect change in kinetic energy.
Seventy kilojoules of work is done by each kilogram of fluid passing through an apparatus under steady-flow conditions. In the inlet pipe, which is located 30m above the floor, the specific volume is 3m^3/kg, the pressure is 300 kPa and the velocity is 50 m/s. In the discharge pipe, which is 15 m below the floor, the specific volume is 9 m^3/kg, the pressure is 60 kPa, and the velocity is 150 m/s. Heat loss from the fluid is 3 kJ/kg. Determine the change in internal energy of the fluid passing through the apparatus.