- #1
azler
- 2
- 0
Homework Statement
Can some one please help me out on this, i can't seem to get my head around it.
Regards,
Rob
How Effective Are Human-Powered Chargers for Everyday Use?
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Homework Help Overview
The discussion revolves around the effectiveness of human-powered chargers, particularly in the context of efficiency and energy transfer. The original poster expresses difficulty in understanding the problem and seeks assistance in approaching it.
Discussion Character
- Exploratory, Assumption checking
Approaches and Questions Raised
- Participants inquire about the original poster's progress and understanding of efficiency equations. There is a suggestion to derive the efficiency equation and explore the relationship between input power and stored energy.
Discussion Status
The discussion is ongoing, with participants providing guidance on concepts related to efficiency. The original poster has not yet made progress and is considering assumptions about the type of charger to analyze.
Contextual Notes
The original poster notes a lack of specific information about the type of human-powered charger, leading to uncertainty about how to proceed with the problem.
Can some one please help me out on this, i can't seem to get my head around it.
Regards,
Rob
- #2
arkofnoah
- 124
- 1
tell me what you've done so far.
- #3
xcvxcvvc
- 392
- 0
do you know the equation for efficiency? if not, do you think you can derive it? if a system were 0 percent efficient(0.00), you'd need to supply infinite energy to reach any finite stored energy. If the system were 100% efficient (1.00), you'd need to supply Z joules to store Z joules. Can you think of a relationship between P_in and P_stored that relies on the 0 to 1.00 representation of efficiency that would produce the end behavior we just explored?
- #4
azler
- 2
- 0
Hi Sorry about the late reply i have been away.
I have not managed to do any thing on this question it has stumped me from he start.
It says a human power charger is used but not what charger so i am assuming i can make on up? for instance a bike powered charger?
Any info to get me started would help me a lot.
Regards,
Rob
I have not managed to do any thing on this question it has stumped me from he start.
It says a human power charger is used but not what charger so i am assuming i can make on up? for instance a bike powered charger?
Any info to get me started would help me a lot.
Regards,
Rob