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konstantin123 [22]
1 year ago
9

If the number of turns in a primary coil is 200 and the voltage is 120 V, then how many turns are needed in a secondary coil of

a transformer to produce an output voltage of 24,000 V?
Physics
1 answer:
MatroZZZ [7]1 year ago
6 0

Np/Ns = Vp/Vs

200/Ns=120/24000

Ns=40,000

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Answer:

The atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus

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3 years ago
This glass of lemonade is sitting in the hot summer sun. As time passes, in which direction will heat transfer take place?
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4 0
2 years ago
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 523 Hz and has a spe
Firdavs [7]

To solve this problem it is necessary to apply the concepts related to Dopler's Law. Dopler describes the change in frequency of a wave in relation to that of an observer who is in motion relative to the Source of the Wave.

It can be described as

f = \frac{c\pm v_r}{c\pm v_s}f_0

c = Propagation speed of waves in the medium

v_r= Speed of the receiver relative to the medium

v_s= Speed of the source relative to the medium

f_0 =Frequency emited by the source

The sign depends on whether the receiver or the source approach or move away from each other.

Our values are given by,

v_s = 32.2m/s \rightarrow Velocity of car

v_r = 14.8 m/s \rightarrow velocity of motor

c = 343m/s \rightarrow Velocity of sound

f_0 = 523Hz \rightarrowFrequency emited by the source

Replacing we have that

f = \frac{c + v_r}{c - v_s}f_0

f = \frac{343 + 14.8}{343 - 32}(523)

f = 601.7Hz

Therefore the frequency that hear the motorcyclist is 601.7Hz

8 0
3 years ago
9. When making a circuit, why is gold wiring not used?
daser333 [38]

Answer:

Gold is not used for making electric wires because it is too rare, and too costlier than Copper. Silver and copper are used for making wires. Copper is almost used in electric lines

4 0
3 years ago
Pls help ASAP!! Thank you
GaryK [48]

Answer:

Explanation:

The answer you should pick is A. Two magnets will attract each other when their poles are opposite and they are close together.

5 0
3 years ago
Read 2 more answers
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