Which one is the full moon?

Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tig

TEA [102]

Answer: $I=2.27\times 10^3 A$

Explanation:

Given

Magnetic Field Strength $B=1.5 T$

Length of solenoid $L=1.8 m$

Diameter of Solenoid $D=75 cm$

diameter of wire $d=1.90 mm$

No of turns $N=\frac{Length\ of\ solenoid}{diameter\ of\ wire}$

$N=\frac{1.8}{1.90\times 10^{-3}}=947.36 turns$

Magnetic Field is given by

$B=\frac{\mu _0NI}{L}$

where $\mu _0=magnetic\ permeability\ of\ free\ space=4\pi \times 10^{-7}$

$I =current$

Thus $I=\frac{BL}{\mu _0N}$

$I=\frac{1.5\times 1.8}{4\pi \times 10^{-7}\times 947.36}$

$I=2270 A$

$I=2.27\times 10^3 A$

6 0

3 years ago

For free convection from a surface to the ambient fluid, an increase in Grashof number

Kipish [7]

Answer: Option(d) is the correct option

Explanation:

Grashof number (Gr) is the ratio that is between buoyant force to viscous force persist on fluid on layer of velocity boundary.It is in dimensionless form.

According to the question ,

Laminar flow has $10^{3}$ < (Gr) < $10^{6}$ as range of boundary layer for free convection.

For transition to take place into turbulent form, it has range of $10^{8} < Gr < 10^{9}$ in terms of free convection.

So, if Grashof number (Gr) is increased then it might tend to change flow from laminar form into turbulent form for free convection.

Other options are incorrect because increasing in Grashof number does not always change the flow mechanism from laminar to turbulent or vice versa neither may cause to laminar flow. Therefore, the correct option is option(d).

4 0

3 years ago

What is the difference between a mechanical wave and an electromagnetic wave? A mechanical wave travels through empty space, whi

sertanlavr [38]

Answer: The correct answer is "A mechanical wave travels through matter, while an electromagnetic wave travels through empty space".

Explanation:

The difference between a mechanical wave and an electromagnetic wave are as follows:

Electromagnetic waves are produced by the vibrations of the charged particles while the mechanical waves are caused by the wave amplitude.

Electromagnetic wave does not need medium while the mechanical wave need medium to travel. Mechanical wave can travel in solid, liquid and gas. Electromagnetic wave travels in vacuum.

Therefore, a mechanical wave travels through matter, while an electromagnetic wave travels through empty space.

7 0

4 years ago

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A person on another planet shines a flashlight at you. The planet and the earth are both in the same reference frame and are not

Nat2105 [25]

Assuming that they were at the exact distance away from you when they both turned on their lights your answer would be C. no matter how fast the person is moving light still travels at the same speed. please give brainliest

6 0

4 years ago

Which organisms were first responsible for depleting carbon dioxide from the atmosphere, replacing it with oxygen?

fgiga [73]

C) Cyanobacteria is the answer

6 0

3 years ago

Read 2 more answers

Which one is the full moon?​

Which one is the full moon?