3 years ago

Ayuda porfa es de actividades fisicas

Physics

1 answer:

igor_vitrenko [27]3 years ago

3 0

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The diagram below shows a flat mirror reflecting

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Answer:

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The sound intensity at a distance 2.00 m from a sound source is 5.00 Find the total sound energy emitted by the source in each s

notka56 [123]

Answer:

P = 251, 3 W

Explanation:

The intensity is defined as the power emitted per unit area

I = P / A

Since sound is distributed in all directions spherical shape, the area of a sphere is

A = 4π r²

let's clear the power and replace

P = I A

P = I (4π r²)

let's calculate

P = 5.00 (4π 2²)

P = 251, 3 W

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3 years ago

In which situation is chemical energy being converted to another form of energy?

otez555 [7]

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A burning candle. (chemical energy into energy of heat and light, i.e. thermal and wave)

Explanation:

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3 years ago

An infinitely long straight wire has a uniform linear charge density of Derive the 4. equation for the electric field a distance

marshall27 [118]

Answer:

$E = \frac{\lambda}{2\pi \epsilon_0 r}$

Explanation:

Let the linear charge density of the charged wire is given as

$\frac{q}{L} = \lambda$

here we can use Gauss law to find the electric field at a distance r from wire

so here we will assume a Gaussian surface of cylinder shape around the wire

so we have

$\int E. dA = \frac{q}{\epsilon_0}$

here we have

$E \int dA = \frac{\lambda L}{\epsilon_0}$

$E. 2\pi r L = \frac{\lambda L}{\epsilon_0}$

so we have

$E = \frac{\lambda}{2\pi \epsilon_0 r}$

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3 years ago

PLS ANSWER FAST WILL GIVE BRAINLY!!!!!!

svet-max [94.6K]

Answer:

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3 years ago