12/16/24

Find g(x), where g(x) is the translation 3 units right and 11 units up of f(x)= – 3|x–7|–9.
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11/19/24

The rental rate at Rent-a-Wreck is a $36.00 fee plus $0.20 per mile driven. Identify the slope and the units of the slope.
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11/17/23

Determine the required cross sectional areas
Determine the required cross-sectional areas of members AB and AD of the given truss shown, if the allowable stress in tension is 120MPa while in compression is 105MPa. A reduced allowable stress... more
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03/02/23

Piston P has a velocity upwards of 68.95 mm/s. Find the angular velocity of arms AB and BD when q=67deg..
https://imgur.com/a/yADcvhq
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08/18/22

power electronics
A dc-dc buck converter has the following design parameters: 𝑉𝑖𝑛 = 120 V, 𝑅 = 25 Ω, 𝑃𝑜𝑢𝑡 = 150 W, 𝑓𝑠𝑤 = 200 kHz, and L = 0.4 mH. What should the load value be changed to in order for the converter... more
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08/03/22

Determine the minimum diamter required for the shaft of a simple torsion-bar.
A simple torsion-bar spring is shown. The shear stress in the steel [G = 11,500 ksi] shaft is not to exceed 11000 psi, and the vertical deflection of joint D is not to exceed 0.650 in. when a load... more
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03/16/22

Propulsion question
A medium sized aircraft with two turbojet engines installed is cruising at an altitude of 10000m at a Mach number of 0.8. At this flight condition, each engine has a net specific work output of 250... more
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03/14/22

Calculate ΔH° for the reaction below: 4NO2(g) 4NO(g) + 2O2(g) ΔH° = ?
Consider the following thermochemical equation:2NO(g) + O2(g)  2NO2(g) ΔH° = -113.2 kJCalculate ΔH° for the reaction below:4NO2(g)  4NO(g) + 2O2(g) ΔH° = ?Answer key: +226.4 kJThis was a complete... more
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02/19/22

Need help understanding how to solve this type of statistics problem.

Five 100ohm resistors, each having a 5% tolerance, are connected in series. What is theoverall nominal resistance and tolerance or the combination?
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12/03/21

After two minutes of cooling, it was at 178 degrees and after five minutes of cooling it was at 154 degrees. At what temperature did the liquid start cooling? Show how you arrived at your answer.
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11/25/21

In the year 2005, a picture supposedly painted by a famous artist some time after 1635 but before 1685 contains 95.4 percent of its carbon-14 (half-life 5730 years).
From this information, could this picture have been painted by this artist?  Approximately how old is the painting? 
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04/12/21

Thermodynamics- Combustion -Conservation of Energy
I was able to figure problem one, but I need help with problem 2. Thank you for the help!Problem #1: Ethane (C2H6) gas at mass flow rate of 1.5 kg/min is mixed with air (O2 + 3.76N2) at mass flow... more
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02/23/21

A airplane is traveling 374mph. How long (in minutes) will it take to travel 6176 miles?

A airplane is traveling 374mph. How long (in minutes) will it take to travel 6176 miles? Round up to the nearest minute. If the answer is 11.2 minutes, then you should type in 12 as the answer.
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02/13/21

a full wave rectifier operated from a 60 hz.. find Vpp
A full-wave rectifier is operated from a 60-Hz 50-V-rms source. It has a 500-uF filter capacitor and a 750-omh load.objective:1- find V_avg2- find V peak to peak3- find percent ripple
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02/04/21

Ratio and Proportions Review
Solve for the missing variable.
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02/04/21

A short, square timber post supports a load of 115 kips. If the allowable unit compressive stress is 1000 psi, what nominal size square timber should be used
A short, square timber post supports a load of 115 kips. If the allowable unit compressive stress is 1000 psi, what nominal size square timber should be used.I don't understand how to get the answer.
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02/04/21

Determine the minimum cross-sectional area of a steel bar required to support a tensile force of 50 kips if the allowable unit tensile stress is 20 ksi.
Determine the minimum cross-sectional area of a steel bar required to support a tensile force of 50 kips if the allowable unit tensile stress is 20 ksi.
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02/04/21

What axial compression load may be placed on a short timber post whose cross-sectional dimensions are 9.5 × 9.5 in. if the allowable unit compressive stress is 1100 psi?
What axial compression load may be placed on a short timber post whose cross-sectional dimensions are 9.5 × 9.5 in. if the allowable unit compressive stress is 1100 psi?
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12/03/20

Clamping Force and Clutch Calculation
A multiple clutch has to transmit 90kW from an engine running at 3500 rpm.Clutch lining outer diameter is 200mm and inside diameter is 160mm. Spring pressure on clutch is 170kPa and it's... more
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05/11/19

How does an AC generator synchronize to the grid?
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04/23/19

Three 60w bulbs are in parallel across a 60 v power line. If one bulb burns open what will happen to the other 2?
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11/18/15

Solar Cells Question
Calculate the power generated by the solar cell which obtained Voc = 0.87 V and Isc = 4.1 mA upon direct exposure to sunlight. Assume a fill factor of 25%.
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