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Andrej [43]
3 years ago
12

PLEASE HELP!!!

Physics
1 answer:
ololo11 [35]3 years ago
4 0

Answer:

asd

Explanation:

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Identify which best describes the energy used to pluck guitar strings to make sound.
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<span>The correct answer is: Mechanical Energy

Explanation:
As the guitar strings are plunked, the potential energy stored in the strings has an ability to make them vibrate. When the strings are vibrating, that potential energy is actually converted to the kinetic energy. Hence, the whole phenomena contains both the kinetic energy and the potential energy. The sum of kinetic energy and the potential energy is called Mechanical energy. Therefore, the correct answer is Mechanical Energy.</span>
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A vertical bar magnet is dropped through the center of a horizontal loop of wire, with its north pole leading. At the instant wh
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Answer:

The induced current will be counterclockwise.

Explanation:

Magnetic field lines always begin on north poles and end on south poles. This means that there is an increase of magnetic field lines going into the plane of the loop. The induced current will be counterclockwise to oppose this change.

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Is sound potential or kinetic energy
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Answer:

Sound energy (that is, mechanical vibrational waves passing through an elastic medium) is a combination of kinetic and potential energies. As the wave compresses the medium (storing elastic potential energy) the medium comes to rest (no motion so no kinetic energy).

Explanation:

Hope this helps :D

3 0
3 years ago
After touchdown a fighter jet passes a marker on the runway at an instantaneous speed of 100 m/s and constant negative accelerat
daser333 [38]

Given that,

Deacelectration = -15 m/s²

Negative sign shows the declaration

Slowly speed = 25 m/s

Acceleration = 35 m/s²

Speed = 170 m/s

We need to calculate the time

Using equation of motion

v=u+at

Where, v = final velocity

u = initial velocity

a = acceleration

t = time

Put the value into the formula

25=0+15\times t

t=\dfrac{25}{15}

t=1.66\ sec

We need to calculate the distance from the original runway

Using equation of motion

s=ut+\dfrac{1}{2}at^2

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s=48.2\ m

Hence, The distance from the original runway is 48.2 m.

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4 years ago
How can we find velocity?*
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There is a formula for velocity which is given above

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