Some of the forms of energy are: heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy <span>and so on. Some examples of this are:
</span>Heat energy: the sun in our solar system. Mechanical energy: a moving car. Gravitational energy: a pen being held above a table. Electrical energy: lightning. Sound energy: musical Instruments. Chemical energy: batteries. Nuclear or atomic energy: the fusion reaction in the sun.
<span> Use the Law of Cosines, where you have a triangle with included angle of 145 degrees and sides of 16 and 18. You are then solving the equation: </span>
<span>d^2 = 16^2 + 18^2 - 2(16)(18)cos(145) </span>
For a ball that starts rolling down a ramp the value of the change in its kinetic energy, ΔEk is: Positive
<h3>Meaning of Kinetic energy</h3>
Kinetic energy can be defined as the ability assumed by an object in motion.
Kinetic energy is also said to be a form of mechanical energy that is possessed by an object to be in motion.
In conclusion, For a ball that starts rolling down a ramp the value of the change in its kinetic energy, ΔEk is: Positive
Learn more about Kinetic energy: brainly.com/question/25959744
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Are there options, because I believe the answer is D.
Answer:
Explanation:
The theory of plate tectonics suggests that the earth is broken into a series of slabs called lithosphere that moves over the weak asthenosphere below it.
This theory has provided insight to many chimerical observations made in earth science like volcanism, earthquakes, orogeny e.t.c.
Theory came into limelight after the second world war based on the precepts of the continental drift theory and sea floor spreading theory.
Mantle convection provides the mechanism of motion for the moving plates.
- We can explain the presence of fossils of the same plants and animals in locations that are different using this theory.
- Once in time, the earth was a united land mass.
- Therefore, geographical distribution of fossils across different terrain was not limited.
- It was after the separation of the plates that diversity started.
