Answer:
<u>Mould board plough, disc plough, soil stirring plough, ridger plough,</u> tool frames/carriers with mouldboard plough or tillage sweeps, etc. are improved implements designed for breaking soil. Ploughs are used to break soil and invert furrow slice to control weeds, etc.
Answer:
The age of the rock = 2800.6 million years = 2.8 billion years.
A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.
Explanation:
Half life of Uranium-235 = 700 million years (from literature)
The decay of radioactive substances follow first order reaction kinetics.
The general equation is given as
A(t) = A₀ e⁻ᵏᵗ
A(t) = Amount of radioactive substance left after a particular time = 6.25%
A₀ = initial amount of radioactive substance = 100%
t = time that has passed since the beginning = age of the rock = ?
k = decay constant
The decay constant is related to the half life (T) through the relation,
k = (In 2)/T
k = (0.693/700) = 0.00099 /million years
A(t) = A₀ e⁻ᵏᵗ
6.25 = 100 e⁻ᵏᵗ
0.0625 = e⁻ᵏᵗ
In e⁻ᵏᵗ = In 0.0625 = -2.7726
-kt = - 2.7726
t = (2.7726/0.00099) = 2800.6 million years
t = 2.8 billion years.
Hope this Helps!!!
Explanation:
Mauryan empire, in ancient India, a state centred at Pataliputra (later Patna) near the junction of the Son and Ganges (Ganga) rivers. It lasted from about 321 to 185 BCE and was the first empire to encompass most of the Indian subcontinent.
Gupta Empire of Chandragupta II
After gaining power, Chandragupta II expanded the Gupta Empire through conquest and political marriages until the end of his reign in 413 CE. By 395 CE, his control over India extended coast-to-coast. Just like Ashoka, Chandragupta II made Pataliputra the capital of his empire and centralized the government there. He used tribute money from allies to fund government projects and salaries. Unlike Ashoka, Chandragupta did not rely on a network of spies or closely monitor the affairs of foreigners or allies. Instead, he let regions make their own decisions about administration and local governance.
Some scholars have argued that the Gupta empire was a golden age of India. The empire was marked by peace and public safety, and scholars flourished in this environment. Kalidasa, a poet of the time, is considered the greatest poet and dramatist of the Sanskrit language. Aryabhata, who lived during Gupta empire, was the first of the Indian mathematician-astronomers who worked on the approximation for Pi. Vishnu Sharma is thought to be the author of the Panchatantra fables, one of the most widely-translated non-religious books in history.
The Gupta empire ended with the invasion of the White Huns, a nomadic tribe of people from central Asia, at the end of the fifth century CE. Until the sixteenth century, there was no unifying empire; regional political kingdoms ruled India.
Answer:
A few million, So about 5 million!
Explanation:
