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3 years ago

What are the three subatomic particles that make up an atom

Physics

1 answer:

Harrizon [31]3 years ago

5 0

Answer:

Proton, neutron, electron

Explanation:

The atom consists of a nucleus, where almost all the mass is concentrated, and electrons orbiting around the nucleus.

The nucleus consists of two types of particles:

- Proton: it has a mass of $1.6726\cdot 10^{-27} kg$ , and a positive electric charge of +e ( $1.6\cdot 10^{-19}C$ )

- Neutron: it has a mass of $1.6749 \cdot 10^{-27}kg$ , and it has no electric charge

The third particle that makes an atom is the electron, that orbit around the nucleus:

- Electron: it has a mass of $9.1094\cdot 10^{-31}kg$ , and it has a negative electric charge of -e ( $-1.6\cdot 10^{-19}C$ )

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A car drives around a curve with radius 539 m at a speed of 32.0 m/s. The road is banked at 5.00°. The mass of the car is 1.40 ×

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Answer:

$f_r = 150.47 N$

Explanation:

given,

r = 539 m

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∑ F_x

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∑ F_y = 0

$0 = N cos \theta - f_r sin \theta - mg$

$N = \dfrac{f_rsin \theta + mg}{cos \theta}$

$\dfrac{mv^2}{r}= (\dfrac{f_rsin \theta + mg}{cos \theta})sin \theta + f_r cos \theta$

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$f_r = \dfrac{\dfrac{mv^2}{r}- mg tan\theta}{sin\theta tan \theta + cos \theta}$

$f_r = \dfrac{\dfrac{1.4\times 10^3 \times 32^2}{539}- 1.4\times 10^{3}\times 9.8 \times 0.087}{0.087 \times 0.087 + 0.996}$

$f_r = 150.47 N$

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