Engineering » Page 35

Engineering

Isaac

Where did fossil fuels come from

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Engineering

Kellen Cunningham

Discuss the representation of cultural diversity in video games today. Then, analyze the use of symbols in video game designs featuring diverse cultures.

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Engineering

Aurora Huerta

Hydrogen enters the turbine of an Ericsson cycle at 1040 K, 5 bar with a mass flow rate of 1 kg/s. At the inlet to the compressor the condition is 300 K and 1.5 bar. Assuming the ideal gas model and ignoring kinetic and potential energy effects, determine: a. the net power developed, in KW.

b. the thermal efficiency.

c. the back work ratio.

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Engineering

Madelynn Forbes

Technician A says that as wheelbase becomes shorter in a highway truck, its resistance to yaw is

reduced. Technician B says that an ABS add-on called directional stability control uses the brake

system to avoid tracking yaw. Who is correct?

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Engineering

Albert Huffman

2.) A plane wall is made of brick with a thermal conductivity of 1.5 W / (m⸳K). The wall is 20 cm thick and has a surface area of 10 m2. One side of the wall is exposed to outside air blowing against the wall resulting in a heat transfer coefficient of 20 W / (m2 ⸳K). The other side is exposed to an air-conditioned room with a convective heat transfer coefficient of 5 W / (m2 ⸳K). a. What are the thermal resistances corresponding to conduction through the wall and convection at each wall surface? b. For every 1 o C of temperature difference between the outside and inside air, how much additional cooling power is required from the air conditioner?

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Engineering

Monica

Identify which sound type each line contains.

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Engineering

Katie Meyer

Engineering controls are the physical changes that employers make to the work environment or to equipment that make it safer to use.

A) True B) False

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Engineering

Joseph Sheppard

Find the equivalent impedance Zeq seen by the source when Vs = 5 cos (5t) v, C = 2 F, R = 3 Ω and L = 0.5 H. (Give angles in degrees and round final answers to two decimal places.) Calculate the voltage across the capacitor. (Give angles in degrees and round final answers to two decimal places.) complex impedance The equivalent impedance seen by the source is 3 + j 2.4 Ω = 3.84 at an angle of 38.66 Ω. The voltage across the capacitor is at an angle of - 128.66 v.

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Engineering

Wu

Should the ship breaking business continue why or why not?

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Engineering

Madeline Snow

An 18-in.-long titanium alloy rod is subjected to a tensile load of 24,000 lb. If the allowable tensile stress is 60 ksi and the allowable total elongation is not to exceed 0.05 in., compute the required rod diameter. Assume the proportional limit to be 120 ksi.

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Engineering

Melody Garza

What are the hiring requirements to be a biomedical egineer

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Engineering

Jaylynn Mccann

Assume that the number of seeds a plant produces is proportional to its aboveground biomass. Find an equation that relates number of seeds and above ground biomass if a plant that weighs 225 g has 26 seeds. Use the variables s for number of seeds and w for weight in grams.

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Engineering

Kristin Decker

If a tail light circuit is drawing 6 amperes of current from the 12 volt battery, then

the tail light circuit resistance is (A) 2 watts (B) 2 ohm (C) 2 ohms (D) 1 watt.

A vehicle may use (A) diodes in the alternator (B) transistors in the ignition system (C) integrated circuits in the engine control module (D) All of these.

For each of the following, circle T if the statement is true, circle F if it is false.

T

F

An automotive shop is subject to safety regulations regarding employee exposure

to hazardous chemicals; however, used transmission fluid, antifreeze, and brake

fluid may legally be poured down a drain.

37. T

F

High performance engines may be designed with larger intake valves, an efficient

exhaust system, and use a supercharger to raise the volumetric efficiency for more

torque at higher rpms.

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Engineering

Guest

Problem 4: Air flows into an open system and carries energy at the rate of 100 kW. When the air leaves the system, the energy rate it carries is 250 KW. In the meantime, the system receives 350 kW power and negligible heat flux. If the system operates in a steady state and no power done by the system, determine the heat loss of the system in unit kW.

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Engineering

Harper Braun

12. Suppose 0.562 g of graphite is placed in a calorimeter with an excess of oxygen at 25.00˚C and 1 atm pressure. On reaction, the calorimeter temperature rises from 25.00˚C to 25.89˚C. The heat capacity of the calorimeter and its contents was determined in a separate experiment to be 20.7 kJ/˚C. What is the heat of reaction at 25.00˚C and 1 atm pressure?

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