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NARA [144]
3 years ago
5

A notebook is on a desk the force of the notebook weight pushing down on the table is 10 in the force of the table normal force

pushing back up on the notebook with 10 in is this balanced
Physics
1 answer:
Mamont248 [21]3 years ago
5 0

Answer:

Yes it is balanced

Explanation:

Because 10-10= a net force of 0N

Its equal (balanced)

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The velocity of a wave is 500 m/s . The wavelength of the wave is 3.2 m . What is the frequency of the wave ?
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Explanation:

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500=fx3.2

500=3.2f

divide both sides by 3.2

f=156.25Hz

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A square coil (length of side = 24 cm) of wire consisting of two turns is placed in a uniform magnetic field that makes an angle
dalvyx [7]

Explanation:

It is given that,

Length of side of a square, l = 24 cm = 0.24 m

The uniform magnetic field makes an angle of 60° with the plane of the coil.

The magnetic field increases by 6.0 mT every 10 ms. We need to find the magnitude of the emf induced in the coil. The induced emf is given by :

\epsilon=N\dfrac{d\phi}{dt}

\dfrac{d\phi}{dt} is the rate of change if magnetic flux.

\phi=BA\ cos\theta

\theta is the angle between the magnetic field and the normal to area vector.

\theta=90-60=30

\epsilon=NA\dfrac{dB}{dt}\times cos30

\epsilon=2\times (0.24\ m)^2\times \dfrac{6\ mT}{10\ mT}\times cos(30)

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or

EMF = 60 mT

So, the magnitude of  emf induced in the coil is 60 mT. Hence, this is the required solution.

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