V<span>(a) </span>
<span>Let: </span>
<span>a be the acceleration of the system, </span>
<span>g be the acceleration due to gravity, </span>
<span>T be the tension in the string. </span>
<span>For mA: </span>
<span>T = mA a </span>
<span>For mB: </span>
<span>mB g - T = mB a </span>
<span>Adding to eliminate T: </span>
<span>mB g = (mA + mB)a ...(1) </span>
<span>a = mB g / (mA + mB) </span>
<span>= 7.0 * 9.81 / (11.0 + 7.0) </span>
<span>= 3.815 m/s^2 </span>
<span>= 3.82 m/s^2 to 3 sig. fig. </span>
<span>(b) </span>
<span>Let: </span>
<span>s be the distance to the edge of the table, </span>
<span>t be the time taken. </span>
<span>s = at^2 / 2 </span>
<span>t = sqrt(2s / a) </span>
<span>= sqrt(2 * 1.250 / 3.815) </span>
<span>= 0.810 sec to 3 sig. fig. </span>
<span>(c) </span>
<span>From (1): </span>
<span>(mA + mB)(a / g) = mB </span>
<span>mA(a / g) = mB(1 - a / g) </span>
<span>mA = mB(g / a - 1) </span>
<span>= 4.0(100 - 1) </span>
<span>= 396 kg.</span>
Answer:
A.Union forces staged a surprise attack but were forced to retreat.
Explanation:
Machiavelli believes that <span>the princes can use and should use violence in order to survive or to achieve their aims as rulers, especially when there is a problem in the country ot connected with the country. In such situations the princes should keep the people in fear, so no one would want to attack them or take their power. Otherwise, by providing housing and women, he should keep the peace in the country, In this sense is contradictory how he advises the princes to be more liberal. </span>
Answer: O B. People are born equal and with certain rights.
Explanation: From Locke's Treatise on Government, promoting the natural rights of man.
The African-American unit you are describing are known as the Tuskegee Airmen .
This group of African-American pilots were critical in the success of the United States during World War II. Over the course of the war, these men completed thousands of missions. These men were extremely successful, as they performed 200 escort missions and never lost a bomber in the process.
