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3 years ago

In the paper throwing activity, what motion did you observe when tossing the paper in the trash can?

Physics

2 answers:

Olegator [25]3 years ago

7 0

The type of motion was Kinetic energy at use! hope this helps! :D

Ratling [72]3 years ago

4 0

That would be kinetic energy because kinetic energy is <span>energy that a body possesses by virtue of being in motion.</span>

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Question 10 (2 points)

Stella [2.4K]

Answer:

gamma rays

Explanation:

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3 years ago

Two identical cars, one on the moon and one on the earth, have the same speed and are rounding banked turns that have the same r

Naily [24]

Answer:

The value of the centripetal forces are same.

Explanation:

Given:

The masses of the cars are same. The radii of the banked paths are same. The weight of an object on the moon is about one sixth of its weight on earth.

The expression for centripetal force is given by,

$F_{c} = \dfrac{mv^{2}}{r}$

where, $m$ is the mass of the object, $v$ is the velocity of the object and $r$ is the radius of the path.

The value of the centripetal force depends on the mass of the object, not on its weight.

As both on moon and earth the velocity of the cars and the radii of the paths are same, so the centripetal forces are the same.

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3 years ago

A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.40 T is perpendicular to the loop. The field

vazorg [7]

The magnitude of the induced emf is given by:

ℰ = |Δφ/Δt|

ℰ = emf, Δφ = change in magnetic flux, Δt = elapsed time

The magnetic field is perpendicular to the loop, so the magnetic flux φ is given by:

φ = BA

B = magnetic field strength, A = loop area

The area of the loop A is given by:

A = πr²

r = loop radius

Make a substitution:

φ = B2πr²

Since the strength of the magnetic field is changing while the radius of the loop isn't changing, the change in magnetic flux Δφ is given by:

Δφ = ΔB2πr²

ΔB = change in magnetic field strength

Make another substitution:

ℰ = |ΔB2πr²/Δt|

Given values:

ΔB = 0.20T - 0.40T = -0.20T, r = 0.50m, Δt = 2.5s

Plug in and solve for ℰ:

ℰ = |(-0.20)(2π)(0.50)²/2.5|

ℰ = 0.13V

3 0

3 years ago

Determine the smallest thickness of the film for which reflected green light of wavelength 540 nm interfere destructively. Expre

Andre45 [30]

Answer:

Explanation:

Given

Wavelength of green light $\lambda =540\ nm$

For destructive interference by reflection the path difference is an integral multiple of wavelength so

$t=\frac{\lambda '}{2}$

where $\lambda '=\frac{\lambda }{n}$

n=refractive index of medium

suppose water is the medium

$n=\frac{4}{3}$

$t=\frac{540\times 3}{4\times 2}$

$t=202.5\ nm$

4 0

4 years ago

Which theory is a famous for quantum physics

crimeas [40]

The quantum mechanics theory

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3 years ago