3 years ago

Suppose a log's mass is 5 kg. After burning, the mass of the ash is 1 kg. explain what May have happened to the other 4 kg

1 answer:

4 0

I think the "missing mass" may have escaped the site of the
conflagration in the form of hot, invisible gases, and in the form
of all the tiny particles in the smoke.

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A current exists whenever electric charges move. If ΔQ is the net charge that passes through a surface during a time period Δt,

jeka57 [31]

Answer:

It represents the change in charge Q from time t = a to t = b

Explanation:

As given in the question the current is defined as the derivative of charge.

I(t) = dQ(t)/dt ..... (i)

But if we take the inegral of the equation (i) for the time interval from t=a to

t =b we get

Q =∫_a^b▒〖I(t) 〗 dt

which shows the change in charge Q from time t = a to t = b. Form here we can say that, change in charge is defiend as the integral of current for specific interval of time.

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3 years ago

A point on the string of a violin moves up and down in simple harmonic motion with an amplitude of 1.24 mm and frequency of 875

mario62 [17]

Using

V = Amplitude x angular frequency(omega)

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So v= 1.25mm x 5498.5

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