Answer:D. The process of rebuilding society and government in the South
Explanation: After the civil war, the south was more or less in ruins. Abraham Lincoln and Andrew Johnson helped them by providing suplies and schools for the newly freed African Americans.
<span>In 1947, the intense rivalry between the Soviet Union and the United States was called the Cold War. It was a strategic war involving a large number of countries at the world level, divided into two sides, the capitalist and the communist; Led by the United States and the Soviet Union, respectively. This war began right after World War II and with it was sought to achieve the implementation of its own mode of government and economic model worldwide.</span>
Answer:
Answer:
safe speed for the larger radius track u= √2 v
Explanation:
The sum of the forces on either side is the same, the only difference is the radius of curvature and speed.
Also given that r_1= smaller radius
r_2= larger radius curve
r_2= 2r_1..............i
let u be the speed of larger radius curve
now, \sum F = \frac{mv^2}{r_1} =\frac{mu^2}{r_2}∑F=
r
1
mv
2
=
r
2
mu
2
................ii
form i and ii we can write
v^2= \frac{1}{2} u^2v
2
=
2
1
u
2
⇒u= √2 v
therefore, safe speed for the larger radius track u= √2 v
