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3 years ago

What question was asked by Faraday that the narrator calls a leap

Physics

2 answers:

snow_lady [41]3 years ago

8 0

<span>If electricity and magnetism can create motion</span>

masha68 [24]3 years ago

4 0

<span> If electricity and magnetism can create motion, can the reverse be true? Can motion and magnetism create electricity?</span>

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astone is thrown upwards with an initial velocity of 25m/s at ange of 30 to the ground. work out the stones horizantal range?

Vadim26 [7]

Explanation:

$R = \dfrac{v_0^2}{g}\sin{2\theta} = \dfrac{(25\:\text{m/s})^2}{9.8\:\text{m/s}^2}\sin{60°}$

$\:\:\:\:=55.2\:\text{m}$

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3 years ago

Explain how height,acceleration,and speed would affect the movement of a roller coaster

Lady_Fox [76]

The effective acceleration or deceleration due to gravity depends on the inclined angle of the track relative to ground; the steeper the slope is the greater the effective acceleration.

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3 years ago

A concert loudspeaker suspended high off the ground emits 32.0 W of sound power. A small microphone with a 1.00 cm^2 area is 52.

lesya [120]

Answer:

Sound Intensity at microphone's position is $9.417\times 10^{- 4} W/m^{2}$

The amount of energy impinging on the microphone is $9.417\times 10^{- 8} W/m^{2}$

Solution:

As per the question:

Emitted Sound Power, $P_{E} = 32.0 W$

Area of the microphone, $A_{m} = 1.00 cm^{2} = 1.00\times 10^{- 4} m^{2}$

Distance of microphone from the speaker, d = 52.0 m

Now, the intensity of sound, $I_{s}$ at a distance away from the souce of sound follows law of inverse square and is given as:

$I_{s} = \frac{P_{E}}{Area} = \frac{P_{E}}{4\pi d^{2}}$

$I_{s} = \frac{32.0}{4\pi (52.0)^{2}} = 9.417\times 10^{- 4} W/m^{2}$

Now, the amount of sound energy impinging on the microphone is calculated as:

If $I_{s}$ be the Incident Energy/ $m^{2}/s$

Then

The amount of energy incident per 1.00 $cm^{2} = 1.00\times 10^{- 4} m^{2}$ is:

$I_{s}(1.00\times 10^{- 4}) = 9.417\times 10^{- 4}\times 1.00\times 10^{- 4} = 9.417\times 10^{- 8} J$

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3 years ago

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IgorLugansk [536]

Copper conducts electricity

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Which is the best example of Newton's first law of motion

Svet_ta [14]

Object will remain without motion unless some kind of force forces it to change. Hope this helps

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