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2 years ago

Which of these convert electric energy into kinetic energy?

Physics

2 answers:

Anna007 [38]2 years ago

8 0

Answer:

The answer is Electric Motors .

Explanation:

As Electric motors take in electrical energy in order to operate it. So it change from electrical energy to kinetic emergy.

Natasha_Volkova [10]2 years ago

7 0

Answer:A vibration powered generator is a type of electric generator that converts the kinetic energy from vibration into electrical energy.

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How do you calculate density?

Mashcka [7]

Mass per cubic metre so kg/m3. Temperature may give different results.

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3 years ago

An 80-cm-long steel string with a linear density of 1.0 g/m is under 200 N tension. It is plucked and vibrates at its fundamenta

icang [17]

Answer:

Wavelength of the sound wave that reaches your ear is 1.15 m

Explanation:

The speed of the wave in string is

$v=\sqrt{\frac{T}{\mu} }$

where T= 200 N is tension in the string , $\mu$ =1.0 g/m is the linear mass density

$v=\sqrt{\frac{200}{1\times 10^{-3} }$

$v=447.2 m/s$

Wavelength of the wave in the string is

$\lambda =2L=2\times 0.8=1.6 m$

The frequency is

$f=\frac{v}{\lambda} \\f=\frac{447.2}{1.6}\\f=298.25 Hz$

The required wavelength pf the sound wave that reaches the ear is( take velocity of air v=344 m/s)

$\lambda=\frac{v_{air}}{f} \\\lambda=\frac{344}{298.25} \\\lambda=1.15 m$

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3 years ago

In which type of circuit does charge move in only one direction?

mihalych1998 [28]

Answer:

<h2>the ans...is dc circuit...</h2>

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3 years ago

Read 2 more answers

An object starts from rest and slides with negligible friction down an air track tipped at an angle theta from the horizontal. A

Alex Ar [27]

Answer:

The value of θ can be determined by slope of graph as function of square of time.

Explanation:

Lets take

Mass = m

Angle of inclination =θ

From diagram

mg sinθ = m a

a=g sinθ

We know that

$S=ut+\dfrac{1}{2}at^2$

Given that block is in rest position initially.

u= 0

$S=\dfrac{1}{2}(gsin\theta ) t^2$

We can say that

S∝ t² If we assume that t and x and S as y y= m x

$S=\dfrac{1}{2}(gsin\theta ) t^2$

Here slope ,m

$m=\dfrac{1}{2}(gsin\theta )$

So the value of θ can be determined by slope of graph as function of square of time.

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2 years ago

A rescue plane spots a survivor 132 m directly below and releases an emergency kit with a parachute. If the package descends at

borishaifa [10]

Answer: 19.15 meters on the waves away from the survivor.

Explanation:

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3 years ago