C) During the radioactive decay, alpha particles are released. These positive particles are attracted to the negative plate in the electric field
Explanation:
In nuclear reactions, it should be known that the mass and atomic numbers are usually conserved.
²³⁸₉₂U → ²³⁴₉₀Th + ⁿₐX
This implies that:
238 = 234 + n
92 = 90 + a
When this is true, then the nuclear reaction is balanced. Both atomic and mass numbers can be said to be conserved.
Solving for n and a
n = 4
a = 2
Therefore
²³⁸₉₂U → ²³⁴₉₀Th + ⁴₂He
The particle resulting from the decay is an alpha particle. Alpha particles resembles a Helium atom.
Alpha particles are positively charged and they are attracted to the negative plate in the electric field.
Learn more:
Radioactive decay brainly.com/question/10125168
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750W 30mins...750x30x60 joules ... 75000x18 ... about 1,500,000j
D
Answer:
Volume of balloon = 1000 cm^3
Explanation:
The head of a normal person can be assumed as a sphere with radius 10 cm.
Volume of sphere
, where r is the radius.
We have approximate radius = 10 cm.
Approximate volume of head ![=\frac{4}{3} \pi r^3=\frac{4}{3} *\pi* 10^3=4188cm^3](https://tex.z-dn.net/?f=%3D%5Cfrac%7B4%7D%7B3%7D%20%5Cpi%20r%5E3%3D%5Cfrac%7B4%7D%7B3%7D%20%2A%5Cpi%2A%2010%5E3%3D4188cm%5E3)
In the given options the closest value to the approximate volume is 1000 cm^3.
So, volume of head = Volume of balloon = 1000 cm^3