The correct answer is (A) 2.0 J
Total energy of the pendulum is the sum of its kinetic and potential energy. At the instant of time, when the pendulum is at a height <em>h</em> and has a speed <em>v, </em>Its energy is given by,
Substitute 2.0 kg for <em>m</em>, the mass of the pendulum, 9.81 m/s² for <em>g</em>, the acceleration due to gravity, 0.10 m for <em>h and 4.0 m/s for </em>v<em>.</em>
The pendulum has an initial energy of 20 J. the energy lost is given by,
Thus, the energy lost by the pendulum is (A) 2.0 J
Answer:
It gives our light which we need for probably everything.
Explanation:
The statement 'both allow citizens to vote for members of the legislature' describes a similarity between presidential and parliamentary democracies. They are different forms of government.
<h3>Presidential and parliamentary democracies</h3>
Democracy refers to a form of government where people vote to choose authorities designed to decide legislation.
A presidential democracy is when the presented is voted to be the head of government (president) separately from the legislative system.
Parliamentary democracy is a form of government where the political party having the greatest representation in the legislature forms the government.
Learn more about presidential and parliamentary democracies here:
brainly.com/question/3069300
