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Alborosie
3 years ago
5

The electromagnetic spectrum consists of various ranges of electromagnetic waves. Between which of the following does the visibl

e portion of the electromagnetic spectrum fall?
A. between the radio and microwave ranges
B. between the microwave and infrared ranges
C. between the x-ray and gamma ray ranges
D. between the infrared and ultraviolet ranges
Physics
1 answer:
lisabon 2012 [21]3 years ago
7 0
The answer is D, it falls between the infrared and ultraviolet.
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A portable x-ray unit has a step-up transformer. The 120 V input is transformed to the 100 kV output needed by the x-ray tube. T
slega [8]

Answer:

 N_s\approx41667 \hspace{3}lo ops

Explanation:

In an ideal transformer, the ratio of the voltages is proportional to the ratio of the number of turns of the windings. In this way:

\frac{V_p}{V_s} =\frac{N_p}{N_s} \\\\Where:\\\\V_p=Primary\hspace{3} Voltage\\V_s=V_p=Secondary\hspace{3} Voltage\\N_p=Number\hspace{3} of\hspace{3} Primary\hspace{3} Windings\\N_s=Number\hspace{3} of\hspace{3} Secondary\hspace{3} Windings

In this case:

V_p=120V\\V_s=100kV=100000V\\N_p=50

Therefore, using the previous equation and the data provided, let's solve for N_s :

N_s=\frac{N_p V_s}{V_p} =\frac{(50)(100000)}{120} =\frac{125000}{3} \approx41667\hspace{3}loo ps

Hence, the number of loops in the secondary is approximately 41667.

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