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2 years ago

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A single electron has a charge of 2.9×10−15 ZZ . Using zeets and a fictitious unit of mass called the wiggle, ww, the charge-to-

mass ratio of an electron is 2.4×106 Z/wZ/w . What is the mass of an electron in wiggles? Express the mass of an electron in wiggles using two significant figures.

1 answer:

fenix001 [56]2 years ago

7 0

Answer:

m = 1.2 10⁻²¹ w

Explanation:

Despite having other units the laws of physics and comply with all inertial systems, so the charge-mass ratio of the electron is the same

Rel = e / m

m = e / Rel

Where Rel is the ratio, e the charge of the electron and m the masses of the electron

Let's calculate

m = 2.9 10⁻¹⁵ / 2.4 10⁶

m = 1.2 10⁻²¹ w

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A stretched spring has 5184 J of elastic potential energy and a spring constant of 16,200 N/m. What is the displacement of the spring?

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For a spring (or an elastic), the elastic potential energy is calculated by the following expression:

$E_{pe} = \dfrac{k*x^2}{2}$

Where k represents the elastic constant of the spring (or elastic) and x the deformation or displacement suffered by the spring.

Solving:

$E_{pe} = \dfrac{k*x^2}{2}$

$5184 = \dfrac{16200*x^2}{2}$

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$x^{2} = \dfrac{10368}{16200}$

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$x = \sqrt{0.64}$

$\boxed{\boxed{x = 0.8\:m}}\end{array}}\qquad\checkmark$

Answer:

The displacement of the spring = 0.8 m (or 0.80 m)

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Which of the following statements characterizing types of waves are true?

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In general types of wave

1. Transverse wave :

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Ex : Electromagnetic wave , Radio wave .

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