Discussion: 1. Sketch a diagram for the experimental instrumentation, devices. 2. State any possible error source in the experiment. 3. State any suggestions to improve the experiment or another way the estimate the specific heat of solid materials. 4. Compare the exact value with that obtained experimentally. sal
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- In a room 12'-4" by 13'-9" with 8'-0" high ceilings, there is one door 3'x7' and two windows 4' square. Assume there is no waste in materials, and round off your answer to the next larget unit. A. How much wall surface in square feet is there to paint? B. What is the floor area? C. How many gallons of paint will be required to cover the walls with 2 coats of paint if each gallon covers 200 square feet of surface? D. How many lineal feet of cove base floor trim will be required?Hello. Can you please help answer the question shown in the photo? It is a 3-part question which I have attempted many times. I was able to calculate the correct answer for part 2, but part 1 and part 3 still says I am incorrect. Please show how to properly solve the problem. The topic is heat transfer. Thank you.Based on heat capacity data (table below), which of the following materials are best suited to make cookware such as pans and pots? Material Heat Capacity (J/g oC) Iron 0.45 Cement 0.88 Granite 0.79 Wood 1.76
- Please answer the question with steps An unknown material bar having length of 4.3m has 1m cross sectional area. One end is in contact with 373K Thermal conductivity of the material is 197W/mK. The total rate of heat flow is Joules/second. ....... .... (Calculate up to one decimal point accuracy).Calculate the percent error for the heat capacity of steel given that the true value is 0.466 J/g ˚CFor a specified heat input and a given volume which material will have the smallest tempera- ture rise (Use data book if necessary) (a) steel (b) aluminium (c) water (d) copper. When a hot metal piece is left to cool in air the time rate of cooling of the outer layer will be (a) slower at start and faster near the end (b) faster at start and slower near the end (c) both rates will be the same (d) this will depend on the material. (viii) A thin black plate at temperature T receives radiation from a surface at Temperature T1 and radiates to a surface at T2. If all surfaces are black at steady state (a) (T1 – T) > (T – T2) (b) (T1 – T) < (T – T2) (c) (T1 – T) = (T – T2) (d) can be any one of a, b or c. (ix) The temperature profile (in) a slab initially at a constant temperature and then allowed to cool by convection for a short time will be as shown in Fig : (a) E1.2a (b) E1.2b (c) E1.2c (d) E1.2d. Ti
- A brass plug is to be placed in a ring made of iron. At 20°C, the diameter of the plug is 8.755 cm and that of the inside of the ring is 8.741 cm. They must both be brought to what common temperature in order to fit? Given : Required : Illustration: Solution: final answer:1, What does steel have in terms of hot and cold shortness? What led to the Titanic disaster (focus only on the materials engineering component of the disaster in your response)? 2. What are the remedies for steel that is too hot or too cold? Respond succinctly. 3. What does metals and alloys' hydrogen embrittlement entail? What is the cheapest way to prevent hydrogen embrittlement in metals and alloys?Build a spreadsheet to do the step by step method for estimating the temperature of unprotected steel work exposed to the ASTM E119 Standard Fire. Assume a convective heat transfer coefficient of 25 W/m2K and an emissivity of 0.5. Assume the specific heat to remain constant at 600 J/kgK. Use a time step of 30 seconds and an ambient temperature of 20°C. Provide an Excel plot showing the curves of the fire and a steel member through a time of 60 minutes with F/V ratios of: a)25 m-1 b)100 m-1 c)200 m-1 d)300 m-1 Note your plot should contain 5 curves. One for the fire and one for each of the F/V values. Also on the spreadsheet, highlight in green, the cells identifying the temperature of the unprotected steel member with an F/V of 200m-1 at the following times: a)3 minutes b)10 minutes c)20 minutes d)50 minutes
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