4 years ago

An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?

Physics

1 answer:

loris [4]4 years ago

7 0

Answer:

Explanation:

Number of neutrons = mass number- atomic number

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Answer: R=24.2Ω

Explanation: <u>Power</u> is rate of work being done in an electric circuit. It relates to voltage, current and resistance through the following formulas:

P=V.i

P=R.i²

$P=\frac{V^{2}}{R}$

The resistance of the system is:

$P=\frac{V^{2}}{R}$

$R=\frac{V^{2}}{P}$

$R=\frac{110^{2}}{500}$

R = 24.2Ω

<u>For the device, resistance is 24.2Ω.</u>

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a girl performed 50j of work lifting a heavy box it took her 5 seconds to lift the box what is her power

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