Answer:
V = 266.23 m/s
Explanation:
The speed of the wave can easily be given by the following formula:
V = S/t
where,
V = Speed of the Wave = ?
S = Distance Covered by Wave = 3920 km
S = Distance Covered by Wave = (3920 km)(1000 m/1 km)
S = Distance Covered by Wave = 3.92 x 10⁶ m
t = Time taken by the wave to cover the distance = 4.09 h
t = Time taken by the wave to cover the distance = (4.09 h)(3600 s/1 h)
t = Time taken by the wave to cover the distance = 14724 s
Therefore,
V = (3.92 x 10⁶ m)/(14724 s)
<u>V = 266.23 m/s</u>
Current estimates place the age of the universe at about 14 billion years.
The age of the universe is approximately 13.77 billion years, about 14 billion years. The age is calculated by measuring the distances and radial velocities of other galaxies, most of which are flying away from our own at speeds proportional to their distances.
Answer with Explanation:
We say "work done" because it is the <em>amount of force</em> that causes an object's movement or displacement.<u> Without movement or displacement, there is </u><u>"no work done."</u> So, it has to happen first or you have to push or pull something first in order to say that work has been done.
We say "energy change" because <u>one form of energy is being transformed into another form of energy.</u> For example, chemical energy can be transformed or changed into light energy through the<em> combustion of coal. </em>Energy can<em> never be destroyed nor created</em> and this follows the<u> "Law of Conservation of Energy."</u>
Answer: Earth's tilted axis causes the seasons.
Explanation: Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.
You can determine wavelength with “x”
