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3 years ago

An alpha particle

Physics

1 answer:

nydimaria [60]3 years ago

6 0

An alpha particle is identical to a helium nucleus ... 2 protons, 2 neutrons. <em>(1)</em>

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What is the mass of a bicycle moving at 8ms with ke of 384j ?

Olegator [25]

Answer:

12kg

Explanation:

m = ?

ke =384j

V^2 = 8*8=64ms

using

ke=1/2mv^2

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3 years ago

Which of these components is not necessary for current to flow in a series or parallel circuit?

Zielflug [23.3K]

All the components (D) ie, wire, switch and resistor are needed for current to flow in a series or parallel circuit.
In a simple series circuit, all the components are connected end-to-end to form a single path for the electrons or electric current to flow through the circuit. A simple parallel circuit is where all the components in the circuit are connected between the same two sets of common points, creating a more than one path for the electrons or electric current to flow around the circuit.

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3 years ago

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Sandra is having difficulty with her reading assignment because she does not fully understand the language. Which online tool wo

Ede4ka [16]

Answer:

The answer is a TRANSLATION TOOL or D

Explanation:

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3 years ago

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A research van de graaff generator has a 2.30 m diameter metal sphere with a charge of 1.10 mc on it. (a) what is the electric p

juin [17]

The potential on the surface of the charged sphere is 3.9 × 10⁷ volts.

Given:

The diameter of the sphere is 2.30 m and the charge of 1.10 mc.

The potential on the surface of a charged sphere is given by,

$V=k\frac{Q}{R}$

Where V is the potential on the surface, Q is the charge, R is the radius and k is the Coulomb's constant.

V = 8.99×10⁹×5×10⁻³/(2.30÷2)

V = 3.9 × 10⁷ volts

To learn more about van de graaff generator: brainly.com/question/9987015

#SPJ4

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2 years ago

A futuristic train rushes past you at an incredible, relativistic speed such that it appears to only be 80% as long as you know

Fed [463]

Answer:

v = 0.6c = 1.8 x 10⁸ m/s

Explanation:

From Einstein's theory of relativity, we know that the length of an object contracts while traveling at a speed relative to speed of light. The contraction is according to following equation:

$L = L_{0}\sqrt{1 - \frac{v^2}{c^2}}$

where,

L = Relative Length

L₀ = Rest Length

According to given:

L = 0.8 L₀

c = speed of light = 3 x 10⁸ m/s

v = relative speed of train = ?

Therefore,

$0.8L_{0} = L_{0}\sqrt{1 - \frac{v^2}{c^2} } \\\\0.8 = \sqrt{1 - \frac{v^2}{c^2} }$

squaring on both sides:

$0.64 = 1-\frac{v^2}{c^2}\\\\\frac{v^2}{c^2} = 1-0.64 \\v^2= 0.36c^2\\$

taking square root on both sides:

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3 years ago