The sun converts fusion energy into radiant (electromagnetic) energy.
<u>Explanation:
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The energy which we get from the sun is called Solar Energy. The Solar Energy is nothing but, a form of energy, which is left out from an exothermic reaction. The radiant energy is the solar energy. The sun gets its energy through nuclear fusion.
High temperature causes the sun’s nuclei to separate from electrons. And with these electrons, the hydrogen ions combine to form Helium, which is the source of energy for the sun. As the nuclear fusion continues, the energy is derived and we get solar energy.
Answer:
Explanation:
Given
Diameter of sphere is
Charge on the sphere is
Nearest distance electron can reach to sphere is
Here, kinetic energy of electron is converted into electrostatic energy between the two i.e.
Thus, the initial speed of electron is .
Answer:
Earth science or geoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical and chemical constitution of the Earth and its atmosphere. Earth science can be considered to be a branch of planetary science, but with a much older history. Earth science encompasses four main branches of study, the lithosphere, the hydrosphere, the atmosphere, and the biosphere, each of which is further broken down into more specialized fields.
There are both reductionist and holistic approaches to Earth sciences. It is also the study of Earth and its neighbors in space. Some Earth scientists use their knowledge of the planet to locate and develop energy and mineral resources. Others study the impact of human activity on Earth's environment, and design methods to protect the planet. Some use their knowledge about earth processes such as volcanoes, earthquakes, and hurricanes to plan communities that will not expose people to these dangerous events.
The Earth sciences can include the study of geology, the lithosphere, and the large-scale structure of the Earth's interior, as well as the atmosphere, hydrosphere, and biosphere. Typically, Earth scientists use tools from geology, chronology, physics, chemistry, geography, biology, and mathematics to build a quantitative understanding of how the Earth works and evolves. Earth science affects our everyday lives. For example, meteorologists study the weather and watch for dangerous storms. Hydrologists study water and warn of floods. Seismologists study earthquakes and try to understand where they will strike. Geologists study rocks and help to locate useful minerals. Earth scientists often work in the field—perhaps climbing mountains, exploring the seabed, crawling through caves, or wading in swamps. They measure and collect samples (such as rocks or river water), then they record their findings on charts and maps.
Explanation:
Given,
The force applied to lift the tree, F=150 N
The work done in lifting the tree, W=250 J
The work done in lifting the tree is the product of the force applied and the height through which the tree was lifted.
Thus,
Where d is the height through which the tree was lifted.
On substituting the known values,
Thus the tree was lifted through a height of 1.67 m