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Engineering

What steps should Ben follow to prepare for a hurricane?

O A. All the answers are correct

O B. Assemble a disaster supply kit

C. Follow the instructions of local officials

OD. Prepare a personal evacuation plan

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Addyson Elliott

Engineering

design a semiconductor resistor with specified resistance to handle a given current denisty a semiconductor at T=300k Nd=5*10^15 cm^-3 acceptors are to be added to form a compensated p type material. the resistor is to have resistance 10kohm and handle a current denisty of 50A/cm^2 when 5v is applied

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Engineering

The hot combustion gases of a furnace are separated from the ambient air and its surroundings, which are at 25 oC, by a brick wall 0.15 m thick. The brick has a thermalconductivity of 1.2 W/m. K and a surface emissivity of 0.8. Under steady state conditions an outer surface temperature of 100 oC is measured. Free convection heat transfer to the air adjoining this surface is characterized by a convection coefficient h = 20 W/m2. K. What is the inner surface temperature of the brick?

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Jaylynn Maldonado

Engineering

Represent edges that cannot be seen

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Engineering

4. An adiabatic tank of negligible heat capacity and 1 m3 volume is connected to a pipeline containing steam at 10 bar and 200°C, filled with steam until the pressure equilibrates, and disconnected from the pipeline. How much steam is in the tank at the end of the filling process, and what is its temperature if the following occurs: a. The tank is initially evacuated. b. The tank initially contains steam at 1 bar and 150°C

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Engineering

Adjust the formatting of the word Blooming so the font is Arial Black and the font size 72 pts.

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Engineering

A fatigue test is performed with a mean stress of 105 MPa and a stress amplitude of 116 MPa. Calculate the maximum stress. You will only have 1 attempt to answer this question. The answer should be in MPa with 0 decimals of accuracy.

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Engineering

A 100 kmol/h stream that is 97 mole% carbon tetrachloride (CCL) and 3% carbon disulfide (CS2) is to be recovered from the bottom of a distillation column. The feed to the column is 16 mole% CS2 and 84% CC14, and 2% of the CC14 entering the column is contained in the overhead stream leaving the top of the column. (a) Draw and label a flowchart of the process and do the degree-of-freedom analysis. (b) Calculate the mass and mole fractions of CCl4 in the overhead stream, and determine the molar flow rates of CCl4 and CS2 in the overhead and feed streams. (c) Suppose the overhead stream is analyzed and the mole fraction of CS2 is found to be significantly lower than the value calculated in Part (b). List as many reasons as you can for the discrepancy, including possible violations of assumptions made in Part (b).

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Engineering

A composite wall is to be used to insulate a freezer chamber at - 350C. Two insulating materials are to be used with conductivities of 0.04 W/mK and 0.1 W/mK. If the outside surface temperature of the inner layer (0.04 W/mK) should not go below zero and if the exposed surface temperature should not go below (the expected wet bulb temperature) 220C determine the insulation thicknesses. The heat gain is to be limited to 10 W/m^2. Also estimate the value of convection coefficient at such a situation. Outside is at 250C.

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Engineering

The fins of a rocket are a part of which subsystem? *

O

Guidance

O

Structural

O

Payload

O

Propulsion

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Engineering

A car is alone at a red light. When the lights turn green, it's starts at constant acceleration after traveling 100. M, it's is traveling at 15m/s. What is it's acceleration

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Engineering

A. 02 kg of R-134a fills a 0.14-m3 weighted piston-cylinder device at a temperature of - 26.4°C. The container is now heated until the temperature is 100°C. Determine the final volume of R-134a. Use data from the refrigerant tables.

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Engineering

What engine does chrysler 300c have?

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Engineering

A single light window is designated 16 R UP. each riser is 6" high. What is the total rise of the stairs

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Engineering

Define a public static method named s2f that takes two String arguments, the name of a file and some text. The method creates the file and writes the text to it. If all goes well the method returns true. If, however, either of its arguments are null or if there is any problem in creating or writing to the file, the method returns false.

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