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Schach [20]
3 years ago
11

when in object moves stop moving changes speed or changes direction how do scientist describe that condition?

Physics
2 answers:
earnstyle [38]3 years ago
8 0

i think the right answer is unbalanced

Kruka [31]3 years ago
6 0

im taking test rn nd this question was on there, im saying unbalanced force, if it not correct i will put right answer, but im pretty sure the answer is unblanced

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A 5-turn square loop (10 cm along aside, resistance = 4.0 ) is placed in a magnetic field that makes an angle of30o with the pla
andreev551 [17]

Answer:

Explanation:

Area A of the coil = .1 x .1 = .01 m²

no of turns n = 5

magnetic field B = .5 t²

Flux  Φ perpendicular to plane passing through it.= nBA sin30

rate of change of flux

dΦ/dt = nAdBsin30 / dt

= nA d/dt (.5t²x .5 )

= nA x 2 x .25 x t

At t = 4s

dΦ/dt = nA x 2

= 5x .01 x 2

= .1

current = induced emf / resistance

= .1 / 4

= .025 A

= 25 mA.

4 0
3 years ago
The greenhouse effect is
telo118 [61]
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere. Radiatively active gases in a planet's atmosphere radiate energy in all directions
6 0
2 years ago
How is the size of the mri signal related to the applied b0 field?
lianna [129]

Answer:

Intensity Of MRI signal is related as square of B_{0}

or

Intensity is related as B_{0}^{2}.

Explanation:

MRI simply means Magnetic Resonance Imaging. In this process by the resonance of magnetic field the frequency is produced which is used to image the body parts (Mainly the brain).

The signal Strength is the rate of change of Magnetization (M) with respect to the time. For the calculation of Intensity we use Bloch equation which is given by

\frac{dH}{dt} = M \times \gamma B

On further solving

\frac{dH}{dt} =\mu B \times \gamma B \\\frac{dH}{dt} = \mu \times \gamma B^{2}

So, Intensity is related as B_{0}^{2}.

8 0
3 years ago
What is the thinnest film of MgF₂ (n = 1.38) on glass that produces a strong reflection for orange light with a wavelength of 60
marysya [2.9K]

Answer:

Thickness is 217 nm

Explanation:

For a thin film, constructive and destructive interference each has its own effects. Here constructive interference causes the light to be strongly reflected.  The thickness can be determined from

2\times t\times n \times sin\theta=m\lambda

here n is refractive index 1.38, m=1 , \theta=0, \lambda=600 nm

t=\frac{600 \times 10^{-9}}{2\times 1.38} \\t=217 nm

4 0
3 years ago
Why are mineral bands in metamorphic rocks light and dark colored?
Lera25 [3.4K]

Answer:Dark minerals rich in iron and magnesium separate from light minerals rich in silica and aluminum.

Explanation: Metamorphic rocks are rocks formed as a result of the transformation of other existing rocks which can be Igneous or Sedimentary rocks,this transformation process is called METAMORPHISM. During metamorphism,rocks under Serious levels of stress which can lead to the separation of materials.

During this separation process,Dark minerals rich in iron and magnesium are separated from light minerals rich in silica and aluminum.

4 0
3 years ago
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