Recent content by anzgurl

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    What Do p and l Represent in the Resistance Formula R = pl/A?

    thank you But if i had a distance of 100 km ,do i replace "l" with d and convert it to metres?
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    What Do p and l Represent in the Resistance Formula R = pl/A?

    R= pl/A what does p and l stands for?
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    When Does the Particle Pass Through the Origin?

    5 A particle moves horizontally in a straight line according to the rule x(t) = t^3 − 5t^2 + 3t − 5, 0 ≤ t ≤ 7 where x metres is its displacement to the right of the origin at time t seconds. a What is the initial position of the particle? b After how many seconds does the particle pass...
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    Modelling with polynomials and rational functions

    4 The height, x metres, of a diver above a swimming pool at time t seconds after he has bounced from the diving board can be modeled by the function x(t)= 3- 3t (3t^2/2) a How long, in seconds, after he has bounced from the diving board does the diver reach his maximum height? b What is the...
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    How many joules of electric energy are there in 1 kilowatt-hour?

    How many joules of electric energy are there in 1 kilowatt-hour?
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    Energy is neither created nor destroyed in a chemical reactions.

    Energy is neither created nor destroyed in a chemical reactions. Explain where the energy released by the reactions comes from.
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    Chemical equation ammonium nitrate with water

    If i added ammonium nitrate with water, what is the chemical equation? is it NH4NO3 + WATER = NO2H + HNO3
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    Why is copper wire preferred over iron wire for solenoids?

    1.Why is a copper wire was used in a solenoid rather than a iron wire ?