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Engineering

Which of the following is not a fuel? a) - RP-1 b) - Nitrogen Tetroxide c) - Liquid Hydrogen d) - Methane

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Engineering

Calculate the impedance of a 20 mH inductor at a frequency of 100 radians/s. Calculate the impedance of a 500 µF inductor at a frequency of 100 radians/s. What is the equivalent impedance of the inductor and capacitor connected in series? What is the equivalent impedance of the inductor and capacitor connected in parallel?

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Engineering

Water is the working fluid in an ideal Rankine cycle. The pressure and temperature at the turbine inlet are 1200 lbf / in^2 and 1100°F, respectively, and the condenser pressure is 140 lbf/in^2 The mass flow rate of steam entering the turbine is 1.4 x 10^6 lb/h. The cooling water experiences a temperature increase from 60 to 80°F, with negligible pressure drop, as it passes through the condenser. Determine for the cycle:

(a) the net power developed, in Btu/h

(b) the thermal efficiency.

(c) the mass flow rate of cooling water, in lb/h.

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Engineering

How does a car batteray NOT die?

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Engineering

What is a gearbox ratio

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Cameron Friedman

Engineering

is said that Archimedes discovered his principle during a bath while thinking about how he could determine if King Hiero's crown was actually made of pure gold. While in the bathtub, he conceived the idea that he could determine the average density of an irregularly shaped object by weighing it in air and also in water. If the crown weighed 34.1 N in air and 31.4 N in water, determine if the crown is made of pure gold. The density of gold is 19,300 kg/m3. The density of water is 1000 kg/m3.

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Engineering

If 20 kg of iron, initially at 12 °C, is added to 30 kg of water, initially at 90 °C, what would be the final temperature of the combined system? (Hint: the heat given up by the water will be equal to the heat gained by the iron) Explain how you would represent this problem in the simulation.

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Felicity Benson

Engineering

Your application must generate: - an array of thirteen random integers from 1-99, - then prompt the user to select a sorting option (Bubble Sort, Insertion Sort, Shell Sort, Merge Sort, or Quick Sort)

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Engineering

1. Given that increased temperature will (all things being equal), decrease the amount of pressure required to extrude at a given rate; what limits increasing this process variable to increase process speed?

2. Given that the material we are extruding is a crystalline thermoplastic, if we wanted it to stay clear once it cooled what process step would be added to our extrusion line?

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Virginia Ortega

Engineering

A ball A is thrown vertically upward from the top of a 30-m-high building with an initial velocity of 5 m>s. At the same instant another ball B is thrown upward from the ground with an initial velocity of 20 m>s. Determine the height from the ground and the time at which they pass.

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Engineering

A fan that consumes 20 W of electric power when operating is claimed to discharge air from a ventilated room at a rate of 1.0 kg/s at a discharge velocity of 8 m/s. Is the claim reasonable? What if the electric power is 40 W?

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Engineering

Consider five wireless stations A, B, C, D, E. Station

A can communicate with all other stations.

B can communicate with A, C, E.

C can communicate with A, B, D, and

D can communicate with A, C, E. Also

E can communicate with A, D, B.

1) When A is sending to B, what other communications are possible?

2) When B is sending to A, what other communications are possible?

3) When B is sending to C, what other communications are possible?

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Engineering

The phasor technique makes it pretty easy to combine several sinusoidal functions into a single sinusoidal expression without using trigonometric identities. However, you cannot use the phasor technique in all cases. Select the expressions below for which the phasor technique cannot be used to combine the sinusoids into a single expression. Check all that apply. View Available Hint (s) Check all that apply. - 100sin (10,000t+90∘) + 40sin (10,100t-80∘) + 80cos (10,000t) 100cos (500t+40∘) + 50sin (500t-120∘) - 120cos (500t+60∘) 25cos (50t+160∘) + 15cos (50t+70∘) 45sin (2500t-50∘) + 20cos (1500t+20∘) 75cos (8t+40∘) + 75sin (8t+10∘) - 75cos (8t+160∘)

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Engineering

What might cause a shotgun to explode?

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Esperanza Hernandez

Engineering

The $500 Jamie must pay is called

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