Questions
Why is edge bead more common in thick SU-8 compared to thin Shipley 1827? How can...

Why is edge bead more common in thick SU-8 compared to thin Shipley 1827? How can we minimize the edge bead problem (describe all possible methods)? What kind of issues does edge bead produce in soft bake and exposure?

In: Mechanical Engineering

Submit Book Review Cover of Barriers and Accident Prevention bookSubmit the scholarly book review of Erik...

Submit Book Review Cover of Barriers and Accident Prevention bookSubmit the scholarly book review of Erik Hollnagel’s book title Barriers and Accident Prevention. (current edition).

You should review the following documents associated with writing a book review.

Notice that book reviews are detailed, but succinct. The submission should be 700 words. While there are various ways to write a book review, your review should contain the following sections.

Introduction

Short Summary of Content

Analysis and Evaluation of the Book

Conclusions

In: Mechanical Engineering

what are the aspects that you will consider to evaluate the pressure measuring devices

what are the aspects that you will consider to evaluate the pressure measuring devices

In: Mechanical Engineering

Prove the equivalence of Kelvin-Planck and Clausius statements.

Prove the equivalence of Kelvin-Planck and Clausius statements.

In: Mechanical Engineering

what is firehole furnace, bottom blow down and feedwater pump. parts of a boiler

what is firehole furnace, bottom blow down and feedwater pump. parts of a boiler

In: Mechanical Engineering

What is the difference between the ECI and body frames?

What is the difference between the ECI and body frames?

In: Mechanical Engineering

If 1080 steel was heated to 1000 degree and then aircooled in the room temperature, 1080...

If 1080 steel was heated to 1000 degree and then aircooled in the room temperature, 1080 steel has lower strength, what additional heat treatment do you recommend to gain strength? Explain in terms of microstructure theory why this is the case. How else could we change our material to increase strength? Explain in terms of microstructural theory why this is the case

In: Mechanical Engineering

A steel wire with a cross-section area 2.5X10^-3 m2 and a length of 10 m is...

A steel wire with a cross-section area 2.5X10^-3 m2 and a length of 10 m is used to pull a truck on the road. The truck is 10 tons and the friction coefficient between the tires and road is 0.25N/kg. Steel has a Young’s modulus 250MPa.

Suppose this wire contain surface cracks. Determine the largest linear size of the surface crack so that the wire will not fail due to fracture in this application. Kc = 0.1 MPa m^0.5

In: Mechanical Engineering

(1) Problem 9-33 (show the solution process in detail) 9-33 An ideal Otto cycle has a...

(1) Problem 9-33 (show the solution process in detail)

9-33 An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa and 27°C, and 750 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Taking into account the variation of specific heats with temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. Answers: (a) 3898 kPa, 1539 K, (b) 392.4 kJ/kg, (c) 52.3 percent, (d) 495 kPa

(2) Problem 9-33 but assume constant specific heats.

Please help with problem 2 only. Thank you

In: Mechanical Engineering

List the advantages of using sheet metal parts ? List the advantages and disadvantages of using a lubricant in forging ?

 

List the advantages of using sheet metal parts ?

List the advantages and disadvantages of using a lubricant in forging ?

In: Mechanical Engineering

Two trains of equal weight, moving with velocities of 30 miles an hour each and in...

Two trains of equal weight, moving with velocities of 30 miles an hour each and in opposite directions collide. Show that the loss of energy caused by the impact is the same as in the case of a train moving at 60 miles an hour striking another at rest. In the latter case, find the velocity with which the debris will be moved along the track. Also show that before impact the total energy in the one case is doubled that in the other

In: Mechanical Engineering

Explain SIMPLE INDEXING in Manufacturing of gears with an example

Explain SIMPLE INDEXING in Manufacturing of gears with an example

In: Mechanical Engineering

Complete the following table for H2O. Use data from the steam tables. T, °F P, psia...

Complete the following table for H2O. Use data from the steam tables.

T, °F P, psia u, Btu/lbm Phase description
300 782 (Click to select)  Compressed liquid  Saturated mixture  Saturated liquid  Superheated vapor
40 Saturated liquid
500 120 (Click to select)  Saturated mixture  Superheated vapor  Compressed liquid  Saturated liquid
400 400 (Click to select)  Superheated vapor  Saturated liquid  Compressed liquid  Saturated mixture

In: Mechanical Engineering

A band is playing at the Falls Festival. The stage is 1.5m off the ground and...

A band is playing at the Falls Festival. The stage is 1.5m off the ground and there is a flat wall behind them. The sound radiates out from the band, acting like a spherical sound source, and the audience does not reflect any of the sound. If the sound pressure levels 45m from the band are measured at 120dBA, how far from the band do you need to be standing to have the sound loudness double? *Please note: The Directivity Index for a flat wall at the center of a surface can be approximated as 3

In: Mechanical Engineering

1. True or false. The mass of a closed system cannot change. 2. True or false....

1. True or false. The mass of a closed system cannot change.
2. True or false. Fahrenheit scale cannot be used in thermodynamics relations.
3. True or false. An extensive property can be a function of time and location.
4. True or false. If a system is at steady state, then the density is uniform throughout the system.
5. True or false. All modes of heat transfer between two bodies must occur when the two bodies are in contact.
6. True or false. The volume of a closed system cannot change.
7. True or false. Fahrenheit scale is an absolute temperature scale in English units.
8. True or false. A system is at steady state if no more than one of its properties changes with time.

In: Mechanical Engineering