The object must move with the speed of 
times to approximately seeing that it is contracted to exactly half of its actual length.
<h3>How is this calculated?</h3>
The length contraction experimented by the object as it approaches lightspeed, in meters per second, is described by Lorentz contraction formula:
Here, v is the current speed m/s
c is the speed of light in m/s
L' is the length of the object at rest in m
L is the length of the object at the current speed in m
Now we know that
and 
then,
Hence, r = 
Therefore, the answer is the object must travel at a speed of times the lightspeed to be contracted to one-half its proper length.
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Living in a way that allows people to meet present needs, without compromising the ability of future generations to do the same, is known as sustainability.
<h3>
What is sustainability ?</h3>
Sustainability is a social ideal that, in general, seeks for long-term human coexistence on Earth in safety. Since there is no universally accepted definition of sustainability, there are many different ones in the literature and over time. Meeting our needs today without sacrificing the potential of future generations to do the same is what is meant by sustainability. Along with natural resources, we also require economic and social resources. Sustainability goes beyond environmental concerns.
<h3>
What makes a lifestyle sustainable?</h3>
Living sustainably is a practical attitude that attempts to lessen societal and individual environmental impact by implementing actions to combat climate change and other serious environmental issues. Living sustainably is, to put it another way, a way of lessening one's "carbon footprint".
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Law making power--this article gives Congress the power to create laws which are "necessary and proper".
This power of Congress is one that impacts the day-to-day of Americans' lives. This is why the votes for congressional representatives are so important as they are creating the laws dictating the rights of citizens.
Answer:
B. False.
Explanation:
Stage 2 of the Demographic Transition Model (DTM) is characterized by a rapid decrease in a country’s death rate while the birth rate remains high. As such, the total population of a country in Stage 2 will rise because births outnumber deaths, not because the birth rate is rising. The decrease in death rate is commonly attributed to significant improvements in overall health, specifically access to pediatric care, which affects the life expectancy of the most at-risk demographic group — children. But along with basic healthcare, an expanded education system, gender equality, and technological advances in the areas of food production and sanitation also work to decrease the death rate.
