Continuation of the previous problem (b) How much work is performed as the system moves from A B C A per cycle, that is, what is w for the cycle? Report your answer in J.
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- Please help meDetermine the reactions at pin A and roller B.Assume M0 = 500 lb(ft) and L = 10ft.FBD drawn with straight edge required.Two blocks are connected by a very light string passing over a massless and frictionless pulley (Figure 1). Traveling at constant speed, the 20.0 N block moves 80.0 cm to the right and the 12.0 N block moves 80.0 cm downward. Part E During this process, how much work is done on the 20.0 N block by friction? Express your answer with the appropriate units. HẢ ? Wf, 20.0 N = Value Units Figure 1 of 1 Submit Request Answer Part F 20.0 During this process, how much work is done on the 20.0 N block by the normal force? N Express your answer with the appropriate units. ? 12.0 N Wn, 20.0 N = Value Units
- I need help with hw problem #3 please.A section of a roller coaster is designed like the picture below. A roller coaster car with a mass of 230.0kg is released from rest at the top of the hill at Point A to begin the ride. Assume that the reference level is set to the ground, and that energy is not lost to other forms (i.e. heat, sound, etc.). What is the total mechanical energy of this roller coaster car (at any point)?Please help me with these questions a. What is the name given to this cycle, and why is it important? The volume of the ideal gas at point 1 is V1, etc. By analysing the adiabatic processes, we find that: V_2/V_1 = V_4/V_3 b. The work done during the isothermal processes is WC (between points 1 and 2) and WH (between points 3 and 4). Find an expression for the fraction WC / WH in terms of TC and TH. c. Apply the First Law of Thermodynamics to the isothermal processes to show that the efficiency of this cycle is (please see the image with the corresponding formula for question c) d. Use the Second Law of Thermodynamics to explain why no heat engine can be more efficient than a perfectly reversible engine. You may wish to include a heat flow diagram in your answer.