MAT. SCI. & ENG: AN INTO. WILEYPLUS
MAT. SCI. & ENG: AN INTO. WILEYPLUS
10th Edition
ISBN: 9781119472001
Author: Callister
Publisher: WILEY
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Chapter 5, Problem 17QAP
To determine

The time required to achieve the carbon concentration to 0.45 wt% at a 5 mm position from the surface.

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π 3- √³t sin √t sin(+4) dt
explore how frugal innovation can address a specific social or economic challenge in a local community (it does not have to be your own). Frugal innovation emphasizes cost-effective, resource-efficient solutions designed to be accessible to underserved populations by simplifying products, services, or processes.   Your presentation should: Identify a specific challenge faced by an underserved community. This could relate to healthcare, education, clean water, sustainable housing, energy, transportation, or employment opportunities. Develop a frugal innovation solution to address this challenge. Your solution should be practical, affordable, and use local resources or processes that reduce costs while maintaining impact. Analyze feasibility and impact, considering: Available local resources and constraints Key stakeholders (e.g., community members, NGOs, businesses, or government) Barriers to implementation Potential long-term social and economic benefits Ensure alignment with…
An inner-city electric bus with 7,200kg weight and average speed of 72 km/hour operates using a hybrid power source of lithium-ion battery pack and a bank of super capacitor. equipped with a lithium battery pack and a bank of supercapacitor. The energy content of the supercapacitor bank is twice the regenerative breaking energy of the electric bus at average speed. The electric bus commutes 490 km per charged battery and consumes 400 Wh/km.   Design the supercapacitor bank to provide 100V output, based on supercapacitor cells with 3600F capacitance and 2V.                                           Calculate the energy density of the supercapacitor at the cell level, assume cells with 10cm diameter and 15 cm height.                                             3. Design the battery pack for the electric bus by assuming that the energy of regenerative breaking will not be used for commuting but used to run the vehicle’s accessories. The unit cell of the battery pack is a lithium-ion…
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