Assignment #7

help with the question pls

Determine for the following heat engine a) The thermal efficiency nb) The maximum thermal efficiency Nmax

As indicated, three blocks were suspended in the air by massless strings that passed through massless and fixed pulleys. m (middle mass) = 5.00 [kg]. When the system reached equilibrium, it was discovered that a = 60.0° and y = 30.0 Draw the free body diagrams of block A, B, and C. MA 1. Write down Newton's 2nd law along the x and y directions for all three blocks. You must have six equations total. 2. What is the magnitude of mA? 3. What is the magnitude of mc? 4. What would be the magnitude of mA and mc when a = y? MB mc

In an expansion phase for an existing system Engineers determined that they need Q=1.20 [m^3/s] of flow from Reservoir_A to Reservoir_B. Surface Water level at "A" 55.0 [m]; Surface Water level at "B" 80.0 [m]. PipeLine_length: 1500 [m], Desired Discharge = 1.20 [m^3/s]; Darcy-Weisb fric fact = 0.015 Min losses: K_inlet = 0.5 K_valve = 5.5 K_bend = 0.3 K_exit = 1.0 Pump charact.: see below. You are allowed 1) to add a second pump (same characteristics) 2) to adjust the System Curve: H_syst=H_static + H_dynamic all other parameters remain the same, i.e. length of pipe, roughness coefficient, minor loss coefficients. What is it that you can manipulate/change and what is the new dimension; in [m]? Q[m^3/s] H [m] 0.00 128.0 0.15 125.7 0.30 117.2 0.45 108.1 0.60 92.3 0.75 73.6 0.90 50.8 1.05 22.0 1.20 0.0

Fill in the chart.  The total mass is 505g.

Help with this please, thank you!

weight = 60 air resistance = 5.5 initial speed = 2.5

2.2 Types of Forces Challenge What is the magnitude of the resultant force due to the distributed load in the diagram? The use of significant figures is not required. Report you answer to the ones-place. Units taken as [N]. y [N] 400.- w [N/m²] 300.- 200.- 100.- 1.0 x [m] z [m] 3.0 2.0 1.0 2.0 3.0 4.0 5.0 Figure References: All figures created by author(s) using Adobe Illustrator with permission. Type your numeric answer and submit 800 Х You are incorrect

Find the characteristic frequencies and the characteristic modes of vibration for systems of masses and springs as in Figure 12.1 and Examples 3, 4, and 6 for the following arrays. 14. k, m, 2k, m, k 5k, m, 2k, m, 2k 15.

Tow question