13:28

4.32 Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 220°F, with a velocity of 120

16:40

4.29 Refrigerant 134a flows at steady state through a horizontal tube having an inside diameter of

14:46

Three forces act on the bracket. Determine the magnitude and direction θ of F so that the resultant

10:41

4.18 Refrigerant 134a enters the evaporator of a refrigeration system operating at steady state at

06:14

Express F1, F2, and F3 as Cartesian vectors.

12:18

4.110 A tank whose volume is 0.01 m3 is initially evacuated. A pinhole develops in the wall, and air

08:13

Determine the magnitude of the resultant force FR= F1+ F2 and its direction, measured clockwise from

06:31

The force acting on the gear tooth is F = 20 N. Resolve this force into two components acting along

06:05

If F1=30N and F2=40N, determine the angles θ and φ so that the resultant force is directed along the

11:52

4.39 Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of

05:46

4.6 If a kitchen-sink water tap leaks one drop per second, how many gallons of water are wasted

11:17

4.34 Air with a mass flow rate of 2.3 kg/s enters a horizontal nozzle operating at steady state at

07:46

Determine the magnitude and direction θ of FA so that the resultant force is directed along the

13:02

6.40 Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 4 bar, 40°C

07:40

If the resultant force acting on the support is to be 1200 N, directed horizontally to the right,

13:04

4.24 Refrigerant 134a enters a horizontal pipe operating at steady state at 40°C, 300 kPa, and a

06:29

If the resultant force of the two tugboats is 3kN, directed along the positive x axis, determine the

09:40

Determine the magnitude of the resultant force and its direction, measured counterclockwise from the

12:23

Determine the magnitude of the resultant force FR = F1 + F2 and its direction, measured

05:59

6.25 Water within a piston–cylinder assembly, initially at 10 lbf/in2, 500°F undergoes an internally

13:12

4.68 As shown in Fig. P4.68, a power washer used to clean the siding of a house has water entering

08:11

3.21 As shown in Fig. P3.21 0.1 kg of water is contained within a piston–cylinder assembly at 100°C.

09:19

4.36 Nitrogen, modeled as an ideal gas, flows at a rate of 3 kg/s through a well-insulated

13:42

4.57 At steady state, a well-insulated compressor takes in nitrogen at 60°F, 14.2 lbf/in.2, with a

09:45

4.93 A horizontal constant-diameter pipe with a build-up of debris is shown in Fig. P4.93.

07:12

4.72 Oil enters a counterflow heat exchanger at 450 K with a mass flow rate of 10 kg/s and exits at

11:54

4.75 An air-conditioning system is shown in Fig. P4.75 in which air flows over tubes carrying

19:43

A system consisting of 1 kg of water undergoes a power cycle composed of the following processes:

07:01

6.145 Air enters the compressor of a gas turbine power plant operating at steady state at 290 K, 100

05:14

4.59 Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is compressed at

07:48

4.51 Steam at 1800 lbf/in.2 and 1100°F enters a turbine operating at steady state. As shown in Fig.

04:57

6.18 Steam enters a turbine operating at steady state at 1 MPa, 200°C and exits at 40°C with a

06:11

6.30 One-tenth kg of a gas in a piston–cylinder assembly undergoes a Carnot power cycle for which

04:24

4.52 Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.2

05:16

4.42 Steam enters a well-insulated turbine operating at steady state at 4 MPa with a specific

08:23

4.65 As shown in Fig. P4.65, a pump operating at steady state draws water from a pond and delivers

05:59

4.49 Water vapor enters a turbine operating at steady state at 500°C, 40 bar, with a velocity of 200

06:36

4.37 As shown in Fig. P4.37, air enters the diffuser of a jet engine operating at steady state at 18

06:39

4.47 Steam enters a turbine operating at steady state with a mass flow of 10 kg/min, a specific

12:45

Determine the magnitude and direction of the resultant force. Give the direction as an angle

14:46

4.35 Helium gas flows through a well-insulated nozzle at steady state.

08:44

4.58 Air enters a compressor operating at steady state with a pressure of 14.7 lbf/in2 a temperature

12:07

4.46 A well-insulated turbine operating at steady state develops 28.75 MW of power for a steam flow

09:55

4.17 As shown in Fig. P4.17, air with a volumetric flow rate of 15,000 ft3/min enters an

03:26

4.15 Liquid water flows isothermally at 208°C through a one-inlet, one-exit duct operating at steady

09:02

6.22 A system consisting of 2 kg of water initially at 160°C, 10 bar undergoes an internally

15:06

3.63 A closed, rigid tank filled with water, initially at 20 bar, a quality of 80%, and a volume of

06:22

3.33 Two kg of Refrigerant 134A undergoes a polytropic process in a piston–cylinder assembly from an

14:11

2.76 Figure P2.76 shows a power cycle executed by a gas in a piston–cylinder assembly.

07:04

2.75 The following table gives data, in Btu, for a system undergoing a power cycle consisting of

21:04

3.78 A system consisting of 1 kg of H2O undergoes a power cycle composed of the following processes:

05:50

2.58 A closed system of mass 10 kg undergoes a process during which there is energy transfer by work

10:46

4.100 Separate streams of air and water flow through the compressor and heat exchanger arrangement

09:37

4.87 A well-insulated tank in a vapor power plant operates at steady state.

11:13

6.42 A rigid, insulated container fitted with a paddle wheel contains 5 lb of water, initially at

08:51

2.59 As shown in Fig. P2.59, a gas contained within a piston–cylinder assembly initially at a volume

08:04

A particular power generation system operates on the simple ideal Brayton cycle, across a pressure

06:04

4.60 Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at

05:40

4.53 Air enters a compressor operating at steady state at 1.05 bar, 300 K, with a volumetric flow

10:04

4.31 Steam enters a nozzle operating at steady state at 20 bar, 2808°C, with a velocity of 80 m/s.