An unmanned submarine is equipped with temperature and depth measuring instruments and has radio equipment that can transmit the output readings of these instruments back to the surface. The submarine is initially floating on the surface of the sea with the instrument output readings in steady state. The depth measuring instrument is approximately zero order and the temperature transducer first order with a time constant of 50 seconds. The water temperature on the sea surface, , is 20 °C and the temperature at a depth of x meters is given by the relation:  If the submarine starts diving at time zero, and thereafter goes down at a velocity of 0.5 meters / second, draw a table showing the temperature and depth measurements reported at intervals of 100 seconds over the first 500 seconds of travel. Show also in the table the error in each temperature reading. What temperature does the submarine report at a depth of 1000 meters?

Figure Q2 shows discrete locations of sampled soil electrical conductivity (dS/m). Estimate the magnitude of electrical conductivity at points P, R and T using inverse distance weighting 24 24 Estimate the accuracy of the estimation based on R² if the actual values at P is 5.2 dS/m, at 11 dS/m, and 6.9 dS/m at R 21 12 18 15 12 11 9 6 3 3 1.5 23 R 0 3 6 9 50 17 T 12 12 15 18 Figure Q2 24 21 24

only first attempt please

Need help with engineering problem.   Match the RTT term with its explanation: A: ddt(∫CVβρdᏉ)   B: ∫CSβρVcosθdAout   C: ∫CSβρVcosθdAin     A.       B.       C.       Match one of the following answers below to each letter.   A change within the control volume   Outflow of B from the ontrol volume   Inflow of B to the control volume

On a chilly day, Mr. Hudson grabs a bulb thermometer from the cabinet to measure his temperature. He places the thermometer under his tongue to get an accurate reading of his body temperature. Determine the following if the temperature of the bulb thermometer changes over time, as shown below a) The temperature of the room and Mr. Hudson b) The time constant c) The equation of temperature as a function of time

The location h of a mass m on the end of a spring with a dampening factor k at time t is described by the following differential equation: m 2²h at² What type of variables are h, m, k, and t? + kh= 0

The rapid progress of engineering design and information technology has caused difficulties in analyzing system reliability. Because of the increased complexity in system reliability structure (component/subsystem interfaces), many unexpected failure modes could occur, and their behaviors are interdependent. At a system’s design and development stage, the main challenge in analyzing a complex system is the failure uncertainty introduced by the incomplete knowledge of the system. This makes it hard to decompose system reliability into subsystem/component reliability in a deterministic manner, such as series or parallel systems. As a result, some common reliability analysis tools such as fault tree (FT) and reliability block diagram (RBD) become inadequate. Do you agree, why or why not? Are there any other approaches to system reliability assessment beside these tools at the early system’s design and development stage (what are these approaches)?