Circle true or false and provide beief enplanations to your answers 1true/alse: te identical tanks of ideal gas are at the same pressure volume and tem perature p. k. t both tanks undergo compression to a final volume vy. tank 1 compresses reversibly and adiabatically while tank 2 compresses inothermally. the final pressure of tank 1 is amaller than that of tank 2 2. true/false: under isothermal conditions, an endothermic reaction cannot be used to power an engine to generate work. 2 3 vibrations 10 the cn stretch of ch cn absorbs infrared radiation at -2250 cm" (see fig. la). to a good extent, we can assume that the cn stretch can be represented by a two-level system with energy gap carresponding to the transition, (a) (b) ch, cn w(co) 0 e0 figure 1: vibrational stretch of ch cn and 1w(co%

Follow these directions and answer the questions. 1. set up the ripple tank as in previous investigations. 2. bend the rubber tube to form a "concave mirror" and place in the ripple tank. the water level must be below the top of the hose. 3. generate a few straight pulses with the dowel and observe the reflected waves. do the waves focus (come together) upon reflection? can you locate the place where the waves meet? 4. touch the water surface where the waves converged. what happens to the reflected wave? 5. move your finger twice that distance from the hose (2f = c of c, center of the curvature) and touch the water again. does the image (the reflected wave) appear in the same location (c of c)? you may have to experiment before you find the exact location. sometimes it is hard to visualize with the ripple tank because the waves move so quickly. likewise, it is impossible to "see" light waves because they have such small wavelengths and move at the speed of light. however, both are examples of transverse waves and behave in the same way when a parallel wave fronts hit a curved surface.

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.