C if im not mistaken if im wrong im sorry i do not know alot about that info only my mother does
(a)
<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>
<u>Answer</u>: These apply as goals of the United Nations:
- To promote human rights
- To solve international disputes
- To maintain international peace and security
- To solve economic, social, and humanitarian problems
The UN does not seek to take over aggressive nations in a military way, nor does it set up an international military tribunal. It will provide peacekeeping forces to regions of conflict.
The UN Charter, signed in 1945, lists the purposes of the organization in Chapter I, Article 1. Here's the official wording as found in the Charter:
<em>The Purposes of the United Nations are:</em>
- <em>To maintain international peace and security,</em><em> and to that end: to take effective collective measures for the prevention and removal of threats to the peace, and for the suppression of acts of aggression or other breaches of the peace, </em><em>and to bring about by peaceful means, and in conformity with the principles of justice and international law, adjustment or settlement of international disputes or situations which might lead to a breach of the peace;
</em>
- <em>To develop friendly relations among nations based on respect for the principle of equal rights and self-determination of peoples</em><em>, and to take other appropriate measures to strengthen universal peace;
</em>
- <em>To achieve international co-operation in solving international problems of an economic, social, cultural, or humanitarian character, and in promoting and encouraging respect for human rights and for fundamental freedoms for all</em><em> without distinction as to race, sex, language, or religion; and
</em>
- <em>To be a centre for harmonizing the actions of nations in the attainment of these common ends.</em><em> </em>
The main reason why the United States largely shied away from imperialism prior to 1890 was because there was plenty of potential raw materials and resources located in North America, so the US had no real reason to begin searching in other places like Africa.
