500 GIMPa. The ル プ now coulo down the entropy

1.5 m- Figure 2 The -red-brass rod AB of 1.5 m and the aluminium rod BC of 1 m, shown in Figure 1, are joined at the collar B and fixed to the walls at their ends. If there is no intemal force in the members when the temperature T1 = 10°C, determine the average normal stress in each member when the temperature rises to T2 50°C. Apply the sign conventions. Will the collar be displaced and if yes, how far will it be displaced and in what direction? The cross-sectional area of each member is 1000 mm?. The modulus of elasticity for brass Eir = 100 GPa and for aluminum Eai = 70 GPa. The coefficient for thermal expansion for brass is abr = 18(10)/°C, and for aluminum a.1 = 23(10)/°C.

1. Compared to gasoline, hydrogen has (A) higher energy density per unit volume and per unit mass (B) higher energy density per unit volume but lower energy density per unit mass density per unit mass (C) lower energy density per unit volume but higher energy (D) lower energy density per unit volume and per unit mass 2. A new hydroelectric power plant proposed for the Mississippi River near St. Louis is advertised as "delivering 438,000 megawatt-hours of renewable electricity to the region annually". What is the average power output of the plant? (A) 50 MW (B) 1.2 GW (C) 438 GW (D) 438 MW 3. A car accelerates from 0 to 60 miles/hour in 6 seconds. What is a good estimate of the power output of the engine? (A) the mass of the car divided by 60 miles (B) the chemical energy of the gasoline consumed during the acceleration (C) the thermal energy produced by the engine during the acceleration (D) the final kinetic energy of the car divided by 6 seconds

6 thermodynamics

6. thermodynamics

Differentiate zeroth, first, and second law of thermodynamics

4.5 thermodynamics

Derive the seven general property equation of the following thermodynamics processes:   a. POLYTROPIC PROCESS

8. thermodynamics

What is the thermodynamic system? Explain in detail taking two examples.