contestada

A motor expends a given amount of energy in a certain period of time. If twice the energy is expended in half the time, its power is:

Respuesta :

Energy per unit of time is known as power

so here let say initial power is P in which energy E expended in time interval t

so we can say

[tex]P = \frac{E}{t}[/tex]

now energy expended is double while it took half time

so new power expended will be

[tex]P' = \frac{2E}{t/2}[/tex]

[tex]P' = \frac{4E}{t}[/tex]

so here we can say that now the power expended will be 4 times the initial power

Answer:

Energy per unit of time is known as power

so here let say initial power is P in which energy E expended in time interval t

so we can say

now energy expended is double while it took half time

so new power expended will be

so here we can say that now the power expended will be 4 times the initial power

Explanation:

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