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murzikaleks [220]

4 years ago

11

a model of a plane in different parts of the atmosphere uses a scale of 1:4,000. if a plane flies at an altitude of 2,000 feet,

how high above ground level is the plane in the model?

2 answers:

Hoochie [10]4 years ago

7 0

Answer:

2ft

Explanation:

emmasim [6.3K]4 years ago

4 0

Answer: D, 0.5 ft

Explanation: Apex learning

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3 years ago

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3 years ago

A coil of 40 turns is wrapped around a long solenoid of cross-sectional area 7.5×10−3m2. The solenoid is 0.50 m long and has 500

defon

To solve this problem it is necessary to apply the concepts related to mutual inductance in a solenoid.

This definition is described in the following equation as,

$M = \frac{\mu_0 N_1 N_2A_1}{l_1}$

Where,

$\mu =$ permeability of free space

$N_1 =$ Number of turns in solenoid 1

$N_2 =$ Number of turns in solenoid 2

$A_1=$ Cross sectional area of solenoid

l = Length of the solenoid

Part A )

Our values are given as,

$\mu_0 = 4\pi *10^{-7}H/m$

$N_1 = 500$

$N_2 = 40$

$A = 7.5*10^{-4}m^2$

$l = 0.5m$

Substituting,

$M = \frac{\mu_0 N_1 N_2A_2}{l_1}$

$M = \frac{(4\pi *10^{-7})(500)(40)(7.5*10^{-4})}{0.5}$

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Zarrin [17]

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2 years ago