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AveGali [126]
3 years ago
11

You put a new battery into your MP3 player and listen to a song. What are the energy transformations taking place in this system

?

Physics
1 answer:
otez555 [7]3 years ago
5 0

Answer:

B. Chemical energy to electric energy to kinetic energy to sound energy

Explanation:

A battery is a device that converts chemical energy, stored in the chemical substance contained inside the battery, into electric energy, by pushing electrons along the circuit at which the battery is connected.

In an MP3 player, this electron (which form an electric current) pass through a sound transducer, which is a device that converts the electric energy of the current into kinetic energy, by producing the vibrations of the loudspeaker (or of the headphones).

As a result, the air surrounding the loudspeakers/headphones start to vibrate, producing sound waves, and the sound that we hear: in this last stage, therefore, kinetic energy has been converted into sound energy.

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1. List one way mitosis and meiosis are the same and one way they are different.
kolbaska11 [484]
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6 0
3 years ago
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MariettaO [177]

Answer:

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Explanation:

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8 0
2 years ago
An astronaut on Earth notes that in her soft drink an ice cube floats with 9/10 of its volume submerged. If she were instead in
riadik2000 [5.3K]

Answer:

B) with 9/10 submerged

Explanation:

m = mass of ice cube

\rho = density of soft drink

V = Volume of soft drink displaced

ice cube floats in the soft drink when the force of buoyancy on it balances its weight. Force of buoyancy acting on the cube in upward direction is same as the weight of the soft drink displaced. hence we can write

weight of ice cube = weight of soft drink displaced

mg = \rho V g

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8 0
3 years ago
Read 2 more answers
for an ideal monoatomic gas, the internal energy U os due to the kinetic energy and U=3/2RT per mole.show that cv=3/2R per mole
sladkih [1.3K]

Answer:

i. Cv =3R/2

ii. Cp = 5R/2

Explanation:

i. Cv = Molar heat capacity at constant volume

Since the internal energy of the ideal monoatomic gas is U = 3/2RT and Cv = dU/dT

Differentiating U with respect to T, we have

= d(3/2RT)/dT

= 3R/2

ii. Cp - Molar heat capacity at constant pressure

Cp = Cv + R

substituting Cv into the equation, we have

Cp = 3R/2 + R

taking L.C.M

Cp = (3R + 2R)/2

Cp = 5R/2

3 0
3 years ago
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