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poizon [28]
3 years ago
13

Question 1.) Match the parent nuclei with the daughter nuclei.

Physics
2 answers:
Dima020 [189]3 years ago
7 0
Question 1
Adding an electron has no effect on the mass number but it reduces the atomic number by 1. 
So, 234 91 Protactinium plus 0 negative 1 electron results to Thorium234 and 
      <span>7 4 Beryllium plus 0 negative 1 electron will result to </span><span>Lithium7
</span>Adding a Helium particle increases the mass number of the daughter nuclei by 4 and the atomic number by 2.
So, <span>234 90 Thorium plus 4 2 Helium will results to </span><span>Uranium238 and 
     </span>222 86 Radon plus 4 2 Helium will result to <span>Radium226.

<span>Question 2
</span>
The mass number is  the sum of protons and neutrons. If an element has y protons and x neutrons, then its mass number will be (y+x).<span>

</span>
</span><span>88 38 Strontium. This element has a mass number of 88 and atomic number(number of protons) 38. Neutrons  = 88 - 30 = 50.
Doing the same for the other elements we have;
</span>14 6 Carbon ⇒ Neutrons = 14 - 6 = 8
<span> 127 53 Iodine </span>⇒Neutrons = 127 - 53 = 74<span>
4. 39 19 Potassium </span>⇒ Neutrons = 39 - 19 = 20
wlad13 [49]3 years ago
3 0
Give me some answer choices and i would be happy to help
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65 Points! 9 Questions!
alekssr [168]

Answer:

energy : the ability to cause change

work : is force x distance or when an object moves a distance due to a specific force (measured in units of newtons-meters)

potential energy  : is stored energy

kinetic energy : is energy in motion

mechanicle energy : the energy of motion such as a moving vechile

thermal energy : total kinetic energy in moving partsticles, like in boiling water (energy of heat)

chemical : energy stored in chemical bonds, like in plants

electromagnetic : waves with electric and magnetic properties , such as light

nuclear energy : energy stored in the nuclear atoms

all dish was from mah brain u better mark meh brainliest >:}

~batmans wife dun dun dun...aka ~serenitybella

5 0
4 years ago
A pitcher hurls a 0.25kg ball around a vertical circular path of radius 0.6 m, applying a tangential force of 30N, before releas
Sever21 [200]
Thank you for posting your question here at brainly. Below is the solution:

Ke up top = 1/2*.25 *225 
<span>gain of Pot energy = .25*9.81*1.2 </span>
<span>work input = (1/4)(2 pi *.6)*30 </span>

<span>so </span>
<span>sum of those 3 energies = </span>
<span>(1/2)(.25)v^2</span>
3 0
4 years ago
The weight of an astronaut on the moon is the same as on Earth.<br> True<br> False
Vaselesa [24]

Answer:

False

Explanation:

This is due to the gravitational pull, since the moon does not have the same force or gravity like Earth, your weight would change.

☆anvipatel77☆

•Expert•

Brainly Community Contributor

5 0
3 years ago
Read 2 more answers
Un móvil que viaja a 40 m/s aplica los frenos y desacelera a razón de -0,25 m/seg 2 , ¿Cuánto tiempo le llevo
aivan3 [116]

Answer:

Where is a picture?

Explanation:

4 0
3 years ago
As the wavelength increases, the frequency (2 points) Select one:
LiRa [457]
A.
According to the equation: v=λ*f
λ stands for wavelength. wavelength increases, the frequency will decrease. lower frequency deserves low energy.
7 0
4 years ago
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