An isotope through an unstable nucleus which decomposes readily and also results in the emission of radiation and also a atom electron or helium cell core achieves a steady nuclear composition is known as a radioactive isotope.
for example,
Here isotope the polonium decomposes in stimulate to attain a steady nuclear composition.
You are watching: Which best describes a radioactive isotope?
Thus, we deserve to conclude the an atom is unstable finest describes a radiation isotope.
. Zara travelled in a train relocating at an mean speed that 120km/h and covered a street of 40km in the direction of East. ⦁ She more tra
bsci-ch.org:
i.) 20minutes
ii) 360km
Explanation:
The concern is incomplete. Here is the complete question.
Q2. Zara travelled in a train moving at an typical speed that 120km/h and covered a distance of 40km in the direction of East.
i. Calculate the moment taken through the train to cover this distance.
ii. She further travelled for 3hours in ~ a speed of 120km/h towards North. Calculation the distance she extended in this time.
1) making use of the formula for calculating rate
Speed = Distance/Time
If Zara traveled at an typical speed of 120km/h and covered a street of 40km towards East,
Distance extended = 40km
Speed = 120km/hr
Time take away = Distance/Speed
Time bring away = 40/120
Time take away = 1/3 hr
Time take away = 1/3 * 60 = 20 minute
ii) If she additional travelled because that 3hours in ~ a speed of 120km/h in the direction of North,
Her rate = 120km/hr
Time take away = 3hours
Distance covered this time = rate *Time
Distance spanned this time = 120 * 3
Distance spanned this time = 360km
5 0
5 month ago
Is the right? i think thats the bsci-ch.org
tamaranim1 <39>
Yes simply switch the kj come jk
5 0
9 months ago
How execute I get number of atoms?
Zina <86>
To calculation the number of atoms in a sample, division its weight in grams through the amu atomic mass indigenous the periodic table, then multiply the result by Avogadro"s number: 6.02 x 10^23.
See more: If You Mix Green And Pink And Green Makes What Color Does Pink And Green Make?
4 0
1 month ago
A basketball player pushes down v a force of 34 N ~ above a basketball that is inflated
zloy xaker <14>
bsci-ch.org:
2.2 cm
Explanation:
Pressure = pressure / area
P = F / A
A = F / P
A = 34 N / (9×10⁴ Pa)
A = 0.000378 m²
Area the a circle is:
A = πr²
0.000378 m² = πr²
r = 0.011 m
Diameter is dual the radius:
d = 2r
d = 0.022 m
d = 2.2 cm
8 0
11 month ago
What is liquidity preferences?
ZanzabumX <31>
In macroeconomic theory,liquidity preference is the need for money, thought about as liquidity.
5 0
7 month ago
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