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Engineering

Qui proposa que el Sol és una estrella?

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Giuliana Ritter

Engineering

A jet impinges directly on to a plate that is oriented normal to the axis of the jet. The mass flow rate of the jet is 50 kg/min and its velocity is 200 m/s. Perform a control volume analysis to calculate the force on the plate.

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Engineering

Payment to beneficiaries who were named by

the insured person

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Isabelle Zamora

Engineering

The Reynolds number, rhoVD/μ is a very important parameter in fluid mechanics. Determine its value for ethyl alcohol flowing at a velocity of 4 m/s through a 2-in.-diameter pipe.

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Engineering

Work done by a system during a process can be considered as a property of the system. a) True b) False

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Engineering

When the compression process is non-quasi-equilibrium, the molecules before the piston face cannot escape fast enough, forming a high-pressure region in front of the piston. It takes more work to move the piston against this high-pressure region. Hence, a non-quasi-equilibrium compression process requires a larger work input than the corresponding quasi-equilibrium one. a. trueb. false

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Engineering

hypothetical A-B alloy of composition 40 wt% B-60 wt% A at some temperature is found to consist of mass fractions of 0.66 and 0.34 for the α and β phases, respectively. If the composition of the α phase is 13 wt% B-87 wt% A, what is the composition of the β phase?

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Engineering

10. Which of these requires a wheel alignment after replacement?

A. Struts

B. Shocks

C. Both

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Engineering

What is the definition of diameter pitch?

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Engineering

List two characteristics of computers.

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Engineering

Which of the following elements of the CIA triad refers to maintaining and assuring the accuracy of data over its life-cycle?

Confidentiality

Integrity

Availability

Authentication

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Engineering

According to the video, what are some of the effects of the increase in the use of automated tools for Loading Machine Operators? Check all that apply. making the job safer making the job slower making the job more efficient increasing the number of jobs reducing the number of jobs preventing workers from communicating

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Engineering

A gas flows through a one-inlet, one-exit control volume operating at steady state. Heat transfer at the rate takes place only at a location on the boundary where the temperature is Tb. For each of the following cases, determine whether the specific entropy of the gas at the exit is greater than, equal to, or less than the specific entropy of the gas at the inlet:

(a) No internal irreversibilities,

(b) no internal irreversibilities,

(c) no internal irreversibilities,

(d) internal irreversibilities,

(e) internal irreversibilities.

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Engineering

An uncharged capacitor and a resistor are connected in series to a source of voltage. If the voltage = 7.41 Volts, C = 11.5 µFarad, and R = 89.4 Ohms, find (a) the time constant of the circuit, (b) the maximum charge on the capacitor, and (c) the charge on the capacitor at a time equal to one time constant after the battery is connected

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Cassandra Christensen

Engineering

The convection heat transfer coefficient for a clothed person standing in moving air is expressed as h 5 14.8V0.69 for 0.15, V, 1.5 m/s, where V is the air velocity. For a person with a body surface area of 1.7 m2 and an average surface temperature of 29°C, determine the rate of heat loss from the person in windy air at 10°C by convection for air velocities of (a) 0.5 m/s, (b) 1.0 m/s, and (c) 1.5 m/s.

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