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NeTakaya
2 years ago
12

Why is an element considered a pure substance?

Physics
1 answer:
anastassius [24]2 years ago
3 0

Answer:

An element is a pure substance and is made of only one type of atom.

Explanation:

It cannot be broken down into a simpler substance.

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If a force of 40N is applied for 0.2 sec to change the momentum of a volleyball, what is the impulse?
Montano1993 [528]

Answer:

8ns

Explanation:

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3 years ago
What is the output voltage from a step up transformer with 25 turns in the primary coil and 75 turns in the secondary coil if th
Greeley [361]

Answer:

360 V

Explanation:

We can use the transformer equation:

\frac{V_p}{N_p}=\frac{V_s}{N_s}

where

V_p is the primary (input) voltage

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V_s is the secondary (output) voltage

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In this problem,

V_p = 120 V\\N_p = 25\\N_s = 75

Substituting into the equation, we can find the output voltage:

V_s = N_s \frac{V_p}{N_p}=(75)\frac{120}{25}=360 V

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