<span>The density of water is the greatest at a temperature of "277 Kelvin"
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The the magnitude of the average acceleration during the impact is 9.8 m/s² and the time of motion is 1.11 s.
<h3>Average acceleration of the lead weight during the impact</h3>
The lead weight will fall under the influence of gravity with magnitude of 9.8 m/s².
<h3>Time of motion of the lead weight</h3>
t = √2h/g
where;
- h is the total height of fall, h = 6 m + 0.4 cm = 6.004 m
- g is acceleration due to gravity
t = √((2 x 6.004)/9.8)
t = 1.11 s
Thus, the the magnitude of the average acceleration during the impact is 9.8 m/s² and the time of motion is 1.11 s.
Learn more about time of motion here: brainly.com/question/2364404
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Answer:
The influence of Media and Information over elections, politics and, governance.
Explanation:
Once we used to have politicians travel to interact with citizens and meet them face to face. That is slowly fading away in place of townhalls that take place online.
Video conferencing, video calls, social media apps, and technology now make it easy to connect with a lot of people at once, across various timezones, without changing location.
Once upon a time, the Television media, Radio Media, Cable Television (all categorized as traditional media) used to be the custodian of information, hence, the chief influencers of politics and governance.
Today, the internet has made it possible for individuals or a group of people without much tech-spend to set up and garner a following that has enough power to influence governance.
Online petitions and Wikileaks, the proliferation of terrorist organizations that have strong information and technology as well as social media skills have modified forever, the way public office holders and other stakeholders involved used to look at governance.
Answer:
<em>5) The approximate height is about 80 m. Choice (c)</em>
<em>6) The stone takes about 3 seconds to rise to its maximum height</em>
Explanation:
<u>Free Fall Motion
</u>
A free-falling object falls under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall.
If an object is dropped from rest in a free-falling motion, it falls with a constant acceleration called the gravitational acceleration, which value is .
The distance traveled by a dropped object is:
Question 5
Given the stone reaches the ground in t=4 seconds, the height of the tower is:
The approximate height is about 80 m. Choice (c)
Question 6
Vertical Motion
The vertical motion of an object is controlled by the force of gravity. This means that there is a non-zero net force acting on the object that makes it accelerate downwards.
If the object is thrown upwards at speed vo, its speed at time t is:
The stone reaches its maximum height when the final speed is zero, thus:
Solving for t:
The stone is thrown vertically upwards with vo=30 m/s, thus:
The stone takes about 3 seconds to rise to its maximum height