Airplane emf A Boeing KC-135A airplane has a wingspan of 39.9 m and flies at con

Question

Airplane emf A Boeing KC-135A airplane has a wingspan of 39.9 m and flies at constant altitude in a northerly direction with a speed of 950 km/h .

#1

If the vertical component of the Earth's magnetic field is 5.1×106 T , and its horizontal component is 1.4×106 T , what is the induced emf between the wing tips?

Express your answer using two significant figures.

mV

A 1.6-m wire is wound into a coil with a radius of 3.2 cm.

#2

If this coil is rotated at 98 rpm in a 7.3×102-T magnetic field, what is its maximum emf?

Express your answer using two significant figures.

A solenoid with a cross-sectional area of 1.85×103m2 is 0.655 m long and has 470 turns per meter.

#3

Find the magnitude of induced emf in this solenoid if the current in it is increased from 0 to 2.20 A in 47.0 ms .

#4

How long does it take for the current in an RL circuit with R = 120 and L = 66 mH to reach half its final value?

Express your answer using two significant figures.

You would like to store 9.5 J of energy in the magnetic field of a solenoid. The solenoid has 540 circular turns of diameter 8.2 cm distributed uniformly along its 32 cm length.

#4- A

How much current is needed?

Express your answer using two significant figures.

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Part B

What is the magnitude of the magnetic field inside the solenoid?

Express your answer using two significant figures.

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Part C

What is the energy density (energy/volume) inside the solenoid?

Express your answer using two significant figures.

Airplane emf A Boeing KC-135A airplane has a wingspan of 39.9 m and flies at constant altitude in a northerly direction with a speed of 950 km/h .

#1

If the vertical component of the Earth's magnetic field is 5.1×106 T , and its horizontal component is 1.4×106 T , what is the induced emf between the wing tips?

Express your answer using two significant figures.

E=

mV

A 1.6-m wire is wound into a coil with a radius of 3.2 cm.

#2

If this coil is rotated at 98 rpm in a 7.3×102-T magnetic field, what is its maximum emf?

Express your answer using two significant figures.

Emax=

A solenoid with a cross-sectional area of 1.85×103m2 is 0.655 m long and has 470 turns per meter.

#3

Find the magnitude of induced emf in this solenoid if the current in it is increased from 0 to 2.20 A in 47.0 ms .

|E|= mV

#4

How long does it take for the current in an RL circuit with R = 120 and L = 66 mH to reach half its final value?

Express your answer using two significant figures.

t =   ms  

You would like to store 9.5 J of energy in the magnetic field of a solenoid. The solenoid has 540 circular turns of diameter 8.2 cm distributed uniformly along its 32 cm length.

#4- A

How much current is needed?

Express your answer using two significant figures.

I= A

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Part B

What is the magnitude of the magnetic field inside the solenoid?

Express your answer using two significant figures.

B=   T  

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Part C

What is the energy density (energy/volume) inside the solenoid?

Express your answer using two significant figures.

uB= kJ/m

Explanation / Answer

As we know that

Use Emf = v*B*L = 263.889*5.0x10^-6*39.9 = 0.05264V

but I believe the Earth's field is 0.5x10^-4T

If so then Emf would be 0.5264V

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