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myrzilka [38]
3 years ago
13

A speed-time graph is a horizontal line with a y-value of 4. Which describes the objects motion?

Physics
1 answer:
taurus [48]3 years ago
5 0
It means the speed is constant with a value of 4 units.
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How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns
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Complete Question

How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns.

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Answer:

The value  is  N_s  =  21 \  turns

Explanation:

From the equation we are told that

   The input voltage is  V_{in}  = 120 \ V

   The number of turns of the primary coil is N_p =  210 \  turn

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From the transformer equation

   \frac{N_p}{V_{in}}  =\frac{N_s}{V_o}

Here N_s is the number of turns in the secondary coil

=> N_s  =  \frac{N_p}{V_{in}}  *  V_s

=>N_s  =  \frac{210}{120}  *  12

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