Answer:
The mass of the radioactive sample after 40 minutes is 12.8 g.
Step-by-step explanation:
The mass of the sample can be found by using the exponential decay equation:
Where:
N(t): is the amount of the sample at time t =?
N₀: is the initial quantity of the sample = 120 g
t = 40 min
λ: is the decay constant = 0.056 min⁻¹
Hence, the mass of the sample after 40 min is:
Therefore, the mass of the radioactive sample after 40 minutes is 12.8 g.
I hope it helps you!
<span>Volume of the pyramid = (1/3) * base area * height
Base area = 230</span>² = 52,900 m²
<span>Volume of the pyramid = (1/3) * 52,900 * 138 = 2,433,400 m</span>³
Answer:
Chinese traditional filial piety is the core of Chinese traditional culture.
The Culture of the Chinese nation is extensive and profound. From the three emperors and five emperors in ancient Times to the hundred princes, there have been changes of profit and loss in all dynasties and dynasties. However, the thought and tradition of filial piety has always led the development direction of The Chinese culture for thousands of years, and is the main content of the Chinese social ideology for thousands of years, permeating every aspect of social life. Chinese culture is the most important difference between Chinese civilization and other cultural civilizations.
1. <span>C) Inverse Property of Multiplication
2. </span><span>B) Inverse Property of Addition
3. </span><span>C) Inverse Property of Multiplication
</span>4. Your answer is not listed (The answer is Associative Property of Multiplication)
Answer:
Step-by-step explanation:
The volume of a cone is given as:
where r = radius
h = height of cone
The height of the cone is 17.7 cm and its base radius is 7.9 cm (diameter is 15.8 cm).
Its volume is:
