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kati45 [8]
2 years ago
12

How does the nucleus of an atom change when it emits an alpha or beta particle?

Physics
1 answer:
maria [59]2 years ago
5 0
First of all, an alpha particle consists of two protons and two neutrons (similar to a Helium atom). When an atom emits an alpha particle, its nucleus loses two protons and two neutrons. And its total mass decreases by 4 atomic mass units.(As mass of a proton or a neutron is 1 amu)

There are two kinds of beta emissions (or particles) positron or electron. 

When an atom emits a { \beta  }^{ + } (positron) particle, actually one if its protons releases the particle. Since a positron's charge is positive, when the atom releases a positron it loses its positive charge and turns into a neutron.

When an atom emits a { \beta  }^{ - } (electron) particle, one of its neutrons releases a { \beta  }^{ - } (electron). And since an electron's charge is negative (-) the neutron loses its negative charge (since neutron's electrical charge is neutral) and turns into a proton.

This is simply explained ^ 

There are some other details but this should be enough :)
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Answer:

Explanation:Assume you are lifting an object with mass 20 kg from the ground to a height of 1.5 m.  Assume that you are exerting a constant force in the upward direction and that you are moving the object upward with uniform velocity.  The net force on the object is zero.  The force you are exerting is equal in magnitude and opposite in direction to the force of gravity.  As you are lifting the object you are doing work on the object.

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2 years ago
An electric motor has an effective resistance of 22 22 and an inductive reactance of 72 12 when working under load. The voltage
Alecsey [184]

Answer:

Current amplitude, I = 5.57 A

Explanation:

It is given that,

Effective resistance, R = 22 ohms

Inductive reactance, L = 72 ohms

Voltage of the alternating source, V = 420 volt

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Z=\sqrt{R^2+L^2}

Z=\sqrt{(22)^2+(72)^2}

Z = 75.28 ohms

From Ohm's law,

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I = 5.57 A

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6 0
3 years ago
Place the locations of a watermelon in order from MOST to LEAST potential energy.
sattari [20]

Answer:

Aboard a flying airplane

On a roof

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On top of a table

On the ground

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The higher an object is the more gravity wants to pull it down

3 0
2 years ago
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lana66690 [7]
Hello

1) The total distance the light has to cover to go from Earth to the Moon and back is twice the distance between the Earth and the Moon:
S=2d=2\cdot 3.8 \cdot 10^8~m =7.6 \cdot 10^8~m

2) Given the relationship
v= \frac{S}{t}
where v=3\cdot10^8~m/s is the speed of light, S the total distance covered calculate at point 1), and t the time, we can find the time the light needs to go from Earth to the Moon and back again:
t= \frac{S}{v}= \frac{7.6\cdot10^8 m}{3\cdot10^8~m/s}=2.53~s
4 0
3 years ago
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