Recent questions tagged engineering

+2 votes

1 answer

Write the heat equation for each of the following cases: a. A wall, steady state, stationary, one-dimensional, incompressible and no energy generation. b. A wall, transient, stationary, one-dimensional, incompressible, constant k

asked Jun 4 by answerscourse (100 points)

+4 votes

1 answer

5. After a long period of pumping from an unconfined aquifer at a constant rate of 850 m3/day, the cone of depression reaches equilibrium. The aquifer has an initial saturated thickness of 20m and a hydraulic conductivity of 8.65

asked Jun 3 by answerscourse (100 points)

+7 votes

1 answer

A direct-coupled amplifier has a low-frequency gain of 40 dB, poles at 2 MHz and 20 MHz, a zero on the negative real axis at 200 MHz, and another zero at infinite frequency. Express the amplifier gain function in the form of Equat

asked Jun 3 by answerscourse (100 points)

+10 votes

1 answer

How much we can expect to earn by having petroleum engineer degree with phd?

asked Jun 2 by answerscourse (100 points)

+15 votes

1 answer

Determine the voltage drop from the top terminal to the bottom terminal, vab, in the right hand branch and, vcd, in the left hand branch of the circuit. Determine each voltage drop based on the elements in the corresponding branch

asked Jun 2 by answerscourse (100 points)

+10 votes

1 answer

What prevented this weld from becoming ropey? A lower ampera A higher voltage The position of the weld The stepping motion of the weld

asked Jun 2 by answerscourse (100 points)

+11 votes

1 answer

A westbound section of freeway currently has three 12-ft wide lanes, a 6-ft right shoulder, and no ramps within 3 miles upstream and downstream of the segment midpoint. It is on rolling terrain with 10% heavy vehicles and is opera

asked Jun 2 by answerscourse (100 points)

+4 votes

1 answer

Consider a vertical piston/cylinder system. The piston has a mass of 35 kg and has an unknown radius. There is a pressure gauge to output the pressure inside the cylinder. If the piston is compressed and the pressure gauge reads 3

asked Jun 1 by answerscourse (100 points)

+14 votes

1 answer

Se tiene tres ciudades M, N y P. Un empresario que viaja en aviÃ³n, cuando va de M hacia N tiene que atrasar su reloj 2 horas al llegar a N y cuando va de M hacia P debe adelantarlo 3 horas al llegar a P. Si sale de P hacia N, a l

asked May 31 by answerscourse (100 points)

+12 votes

1 answer

26 points!! Why did Tesla switch to permanent magnetic motors in model 3 from the AC induction motors used model S?

asked May 31 by answerscourse (100 points)

+4 votes

1 answer

An alloy has a yield strength of 805 MPa and an elastic modulus of 107 GPa. Calculate the modulus of resilience for this alloy (in J/m3, which is equivalent to Pa) given that it exhibits linear elastic stress-strain behavior. J/m3

asked May 29 by answerscourse (100 points)

+4 votes

1 answer

22.5-4. minimum liquid flow in a packed tower. the gas stream from a chemical reactor contains 25 mol % ammonia and the rest are inert gases. the total flow is 181.4 kg mol/h to an absorption tower at 303 k and 1.013 Ã— 105 pa pre

asked May 29 by answerscourse (100 points)

+14 votes

1 answer

Which of the following men was the first to use graphs to analyze statistical data? CopernicusEscherPlayfairAldrin

asked May 29 by answerscourse (100 points)

+7 votes

1 answer

(30 points) Consider the turbocharger of an internal combustion engine. The exhaust gases enter the turbine at 450C at a rate of 0.02 kg/s and leave at 400C. Air enters the compressor at 708C and 95 kPa at a rate of 0.018 kg/s and

asked May 29 by answerscourse (100 points)

+14 votes

1 answer

Which statement regarding vessel maintenance is true? When storing a vessel for a long time, it is best to keep it in the sun and uncovered. B When cleaning a vessel, use regular household detergents and cleaners. Ñ When replaci

asked May 29 by answerscourse (100 points)

+10 votes

1 answer

The procedure for determining the presence of Non-Condensable Gasses in refrigerant contained in an external recovery tank utilizes the principle that noncondensable gases the pressure of the refrigerant (compared to the saturati

asked May 28 by answerscourse (100 points)

+3 votes

1 answer

The minimum fresh air requirement of a residential building is specified to be 0.35 air changes per hour (ashrae, standard 62, 1989). that is, 35 percent of the entire air contained in a residence should be replaced by fresh outdo

asked May 28 by answerscourse (100 points)

+3 votes

2 answers

When fire extinguishers are available for employee use, it is the employer's responsibility to educate employees on the principles and practices of using a fire extinguisher and the hazards associated with fighting small or develo

asked May 27 by answerscourse (100 points)

+5 votes

1 answer

10. To cut 1/4" (6 mm) thick mild steel at a rate of 40 inches per minute, the current would be set to approximately???

asked May 26 by answerscourse (100 points)

+15 votes

1 answer

A random experiment consists of selecting two balls in succession from an urn containing two black balls and and one white ball. (a) Specify the sample space for this experiment. (b) Suppose that the experiment is modified so that

asked May 26 by answerscourse (100 points)

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