(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>
<span>July 6: Carnegie Mellon Researchers Find Social Security Numbers Can Be Predicted from Publicly Available Information
</span>
1. the invasion of neutral Belgium and stories of German atrocities in the country which shocked and outraged the Americans
2. In May 1915, a German U-boat sunk the British passenger ship Lusitania off the coast of Ireland. Over 1,000 passengers were killed, including 128 Americans
3. In 1917, Germany sent a telegram to Mexico suggesting that if the US should declare war on Germany, Mexico should declare war on the US In return, Mexico would get back the territory lost in the Mexican-American War Unfortunately for Germany, the telegram was intercepted by the British and hurriedly given to the Americans
Here are 3 goals of foreign policy,
1.For the exchange rate to be the same in all countries,
2.There to be so same numbers on the bills, ( 1,5,10,20,50,100 ) And not ( 1000,2000 and so on )
3.For it to all be the same currency,
Venture Smith. Venture Smith (Birth name: Broteer) (c. 1729 – 1805) was captured when he was a 6 and a half-year-old boy in West Africa and was taken to Anomabo on the Gold Coast (today Ghana) to be sold as a slave. As an adult in Rhode Island (Connecticut), he purchased his freedom and that of his family.
