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Engineering

Katherine Forbes

You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. counts after 66.7 minutes, what is the half-life of this substance? Express your answer with the appropriate units.

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Engineering

Angelo Mendez

Justify with proper description why low cost automation is required to improve productivity in small scale

industries. List out some examples.

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Engineering

Vivian Blevins

A particular op amp using ±15-V supplies operates linearly for outputs in the range-14 V to+14 V. If used in an inverting amplifier configuration of gain - 100, what is the rms value of the largest possible sine wave that can be applied at the input without output clipping?

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Engineering

Mini

Write the definition of a method named countPos that receives a reference to a Scanner object associated with a stream of input consisting of integers only. The method reads all the integers remaining to be read in standard input and returns the number that are positive. So if the input were:

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Engineering

Kiera Cooley

1. A car mechanic had a sealed bucket containing a substance in the gas phase.

She left the bucket outside over the weekend. When she returned, the substand

had changed phase, and the substance was in the liquid phase. What happened

to the molecules of this substance?

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Engineering

Kole Malone

Determine the phase or phases in a system consisting of H2O at the following conditions, sketch p-v and T-v diagrams showing the location of each state and determine the specified property at at the indicated state.

a.) p = 5 bar, T = 151.83C; and find the values of v and u at this state if x=0.6

b.) p = 1.25 MPa, T = 200C; and find the values of v and u at this state (Interpolation may be needed)

c.) p = 5 psia, T=124F; and find the values of v and u at this state (Interpolation may be needed)

d.) p=500 psia, T = 320F; and find the values of v and u at this state (Interpolation may be needed)

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Engineering

Essence Ford

A team of engineers has decided to design a new shoe for people suffering

from a painful foot condition. Each of the following tasks is necessary for the

engineers to undertake during the beginning phase of the project except

which?

A. Estimate the price potential consumers would be willing to pay for

this product.

B. Do research on orthopedic shoes that have already been designed

for this condition.

O

C. Look into the available materials and weigh the advantages and

disadvantages of each.

O

D. Have subjects wear the shoes in an experimental trial to see if

symptoms improve.

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Engineering

Marcos Ayala

Characterize the risk for a chronic daily exposure by the water pathway (oral) of 1.34 x 10-4 mg/kg/day of tetrachloroethylene, 1.43 x 10-3 mg/kg/day of arsenic, and 2.34 x 10-4 mg/kg/day of dichloromethane (methylene chloride).

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Engineering

Arely Valenzuela

Why isn't flexible flexibility the most obvious benefit of road transportation select all that apply

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Engineering

Guest

What does the General Duty Clause require employers to do?

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Engineering

Sierra Cline

A keyboard, monitor and mouse are all considered as computer hardware and a program is known as a software.

True

False

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Engineering

Kailey Howell

Explain under what circumstances earthworm channels might increase downward saturated water flow, but not have much effect on the leaching of soluble chemicals applied to the soil.

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Engineering

Doofus

Air is compressed in the compressor of a turbojet engine. Air enters the compressor at 270 K and 58 kPa and exits the compressor at 465 K and 350 kPa. Take the average specific heat at constant pressure (cp, avg) of air as 1.015 kJ / kg. K and Rair = 0.287 kJ / kg. K. Find the mass specific entropy change associated with the compression process

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Engineering

Maren Mendez

Estimate the endurance strength of a 1.5-in-diameter rod of AISI 1040 steel having a machined finish and heat-treated to a tensile strength of 110 kpsi, loaded in rotating bending.

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Engineering

Guest

A reversible heat pump and a Carnot heat pump operate between the same two thermal reservoirs. Which heat pump has higher COP?

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