(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>
Answer:
France And Russian Empire.
Answer:
False
Explanation:
The global economies that can exist in a country are divided into three:
a. Pure market ( free market economy
b. Command economy
c. Mixed economy which consists of both the pure market and command economy).
The pure market( free market ) economy is also referred to as the economy that has capitalism present in it.
Pure market economy is the economy practised by a country whereby owners of businesses can make their own decisions independent of the government. The government has no influence on the running of the firms or the value been placed in the products the firm produces. In a pure market economy, goods and services are exchanged voluntarily. Buying and Selling of goods and services are carried out in a competitive markets.
The raw materials or resources needed, are given to firms with high prices and a high production capacity that meets the needs of the country.
Pure market economy is not regulated by the government and it occurs in Democratic governments.
Not all global economies practise the pure market economy. An example of a country or global economy that practises the pure market economy is the United States of America.
Answer:
On April 18, 1775, British troops march out of Boston on a mission to confiscate the American arsenal at Concord and to capture Patriot leaders Samuel Adams and John Hancock, known to be hiding at Lexington. ... Two lanterns were hung, and the armed Patriots set out for Lexington and Concord accordingly. Paul Revere was instructed by the Sons of Liberty to ride to Lexington, Mass., to warn Samuel Adams and John Hancock that British troops were marching to arrest them
Explanation:
The <u>EPA</u> also ensures that all communities have access to accurate information about the environment.
