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4 years ago

PLEASE HELP

2 answers:

8 0

The steel becomes a magnet and it would move toward a piece of iron. This is electromagnetism, and is how mechanical work can then be done with this moving piece of steel, like a motor.

Shkiper50 [21]4 years ago

6 0

Answer:

no its D prep said it wasnt a

Explanation:

IT IS D NOT A

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Help with 5 and the question below. BRAINLIEST FOR THE CORRECT ANSWER! Urgent Physics help!

krok68 [10]

Sound level at distance of 15 m is given as 20 dB

so intensity at this distance is given as

$L = 10 Log\frac{I}{I_0}$

$20 = 10 Log{I}{10^{-12}}$

$I_1 = 10^{-10}W/m^2$

now if we move closer to some some distance the sound level is now 50 dB

now the intensity is given as

$L = 10 Log\frac{I}{I_0}$

$50 = 10Log\frac{I}{10^{-12}}$

$I_2 = 10^{-7}W/m^2$

now we know that

$\frac{I_1}{I_2} = \frac{r_2^2}{r_1^2}$

$\frac{10^{-10}}{10^{-7}} = \frac{r_2^2}{15^2}$

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3 years ago

The purpose of a cell (battery) is to: Question 2 options: store chemical energy and transfer it to thermal energy when a circui

xz_007 [3.2K]

Answer:

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Explanation:

A battery (single cell) is a container made of one cell that can produce a particular amount of electrical energy when needed.

It works by converting chemical energy to electric energy which is then used as a power source.

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3 years ago

Technician A says that gears may be used to apply torque to other rotating parts. Technician B says that gears may be used to mu

Goryan [66]

Answer:

Both technicians are right.

Explanation:

Torque is defined as a rotational force that can be calculated by the formula T= F.d. Being F the force applied to a body to make it rotate and d the distance since the force is applied.

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4 years ago

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NARA [144]

Answer:

I believe its C

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4 years ago

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A is only the area of one tile. It wants the area of the whole floor.
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4 years ago