Explanation:
(coal burned transforming chemical to thermal)
(steam turns turbines, transforming thermal into mechanical)
Potential energy always leads to kinetic energy when it is released.
Answer:
7.6427m/s
Explanation:
Given:
#Applying the conservation of momentum along the x-axis:
#And along y-axis:
#Solving for :
#By substitution in the x-axis equation:
Hence the original speed of the ball before impact is 7.6427m/s
Thus, dark matter constitutes 85% of total mass, while dark energy plus dark matter constitute 95% of total mass–energy content. Because dark matter has not yet been observed directly, if it exists, it must barely interact with ordinary baryonic matter and radiation, except through gravity.
108 681(nearest whole day)
Here are the Brief summary of the evolution :
- After earth formed, Volcanoes emtted gas and meteroite brought ice
- Earth cooled and the atmosphere thicken, meanwhile the ocean is also formed
- Cyanobacteria increased the amount of O2
- O2 released into atmosphere and Eukaryotes evolved
hope this helps