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Andru [333]
3 years ago
5

A hockey player uses a leaf blower to apply a constant force on a hockey puck. The puck accelerates in a straight line across th

e ice. Then another player applies an equally strong, constant force on the puck in the opposite direction. How will the puck move in response?
It will stop immediately.
It will slow down, then continue moving at constant velocity.
It will not slow down, but continue moving at constant velocity.
It will slow down and eventually stop.
Physics
1 answer:
blagie [28]3 years ago
8 0
I will slow down and eventually stop
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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
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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

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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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