Solving Physics Question: Frequency & Period, Time to Reach 8A

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Homework Help Overview

The discussion revolves around a physics question related to alternating currents, specifically focusing on the sinusoidal representation of current and its characteristics such as frequency, period, and specific current values.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants inquire about the original poster's progress and understanding of the standard form of a sine function. There are suggestions to analyze the parameters of the given equation to facilitate finding the required answers.

Discussion Status

The discussion is in an early stage, with the original poster expressing a need for assistance and not having started the problem. Some participants are encouraging exploration of the equation's parameters to guide the original poster's understanding.

Contextual Notes

The problem is framed within the topic of Alternating Currents, which may imply specific constraints or assumptions relevant to the discussion.

salvatorecaine
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Here is a practical but slightly advanced physics question. i just need some help solving it.Well here goes

The instantaneous value, i, of a sinusoidal current may be
represented by the equation

i = 10sin 942.5tamperes

(a) Determine the frequency and the period of the waveform.

(b) Determine the time taken from t = 0 for the current to reach a value of 8 amperes.
 
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Can you show us what you have done?

Do you know the standard form for a sin function?
 
I haven't started working on it, i was hoping someone could give me a hand.
If its any help it under the Topic Alternating Currents.
 
salvatorecaine said:
I haven't started working on it, i was hoping someone could give me a hand.
If its any help it under the Topic Alternating Currents.

You should determine what the parameters given in
i = 10sin 942.5tamperes
stand for. Then you can easily find the answers you are looking for.
 

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