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3 years ago

Identify the energy transformations that take place in an electrical fan heater

Physics

2 answers:

natulia [17]3 years ago

4 0

Answer:

Here the electrical energy is transformed into thermal energy

Explanation:

When electrical heater with fan is used to transmit the energy then in this case the energy supplied by the heater to the air molecules which is then forced to move by convection mode of heat transfer.

Here the transformation of energy is given in the form of electrical energy to thermal energy.

this thermal energy is absorbed by the air molecules which are then forced or pushed away by the fan

This type of energy transfer is known as thermal convection of heat.

So here the energy transformation is as following

Electrical energy to Thermal energy then by fan it is kinetic energy of molecules

Sergio [31]3 years ago

3 0

The energy goes from electric energy and gets converted into thermal energy.

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sladkih [1.3K]

Answer:

1.5m/s2

Explanation:

F=ma

a=F/m

a=15/10

a=1.5m/s2

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3 years ago

A generator contains a coil that spins to produce an electric current. How is energy transformed by using a generator

LiRa [457]

<u>Answer </u>

Mechanical energy ⇒ Electric energy

<u>Explanation </u>

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3 years ago

A 706-N man stands in the middle of a frozen pond of radius 8.0 m. He is unable to get to the other side because of a lack of fr

mariarad [96]

Answer:

t=62 s

Explanation:

Applying the conservation of linear momentum formula:

$(m1+m2)*v_{o1}=m1*v_{f1}+m2*v_{f2}$

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$F_g=m.g\\\\m=\frac{706N}{9.81}\\\\m=72.0kg$

now:

$m*v_{f1}=-m_b*v_b\\\\V_{f1}=-\frac{m_b*v_b}{m}\\\\V_{f1}=-\frac{1.2kg*8.0m/s}{72.0kg}\\\\V_f=-0.13m/s$

That is 0.13m/s due south.

because there is no friction, the man will maintain a constant velocity, so:

$d=v*t\\t=\frac{d}{v}\\t=\frac{8m}{0.13m/s}\\\\t=62s$

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3 years ago

Unpolarized light shines pon a photocell for one hour. then, two polarizers, whose transmission axies are offset by 60, are plac

LenaWriter [7]

Answer:

t = 1.10 h

Explanation:

For this exercise we must calculate the intensity that reaches the cell with the polarizers, for this we use Malus's law

I = I₀ cos² θ

Let's calculate

I = I₀ cos² 60

I = I₀ 0.907

This is the intensity that reaches the cell

To find time, use an inverse proportion rule or rule of three, the intensity Io in

t = I₀ / (0.907 I₀) 1 h

t = 1.10 h

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Ann [662]

I believe strength and direction

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