Explanation:
The scale under her feet exerts an equal force but opposite in direction.
This principle aligns with Newton's third law of motion, which says that "for every action, there is an equal and opposite reaction."
As the girl’s weight presses down on the scale with a force of 42N, the scale responds with an equal upward force in the opposite direction.
The resulting net force is zero, which explains why her weight does not break the scale.
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Force
Answer:
Atoms consist of protons, neutrons, and electrons.
Explanation:
Dalton's atomic theory represented an early effort to describe atom properties. It maintained that atoms were the smallest indivisible elements of a substance and that chemical reactions happen through the joining or separation of atoms. All atoms of a single element were identical and distinct from those of other elements. The theory asserted that atoms can neither be created nor destroyed.
[[TAG_13]]With advancement in time, modern insights began to revise the initial tenets of Dalton's atomic theory, which did not include the notion that atoms were made of subatomic particles: electrons, neutrons, and protons. Previously, Dalton's view was that the atom was 'indivisible'. However, the electron was discovered by J.J. Thomson in 1897, leading to the later identification of protons and neutrons, indicating that atoms comprise even smaller components.[[TAG_14]]
The "Chemical Energy" present in gasoline is converted into mechanical energy within a motorcycle engine. Hope this assists!
We can calculate kinetic energy with the formula KE = 1/2 M V^2 and potential energy using PE = M g H
We can equate the kinetic energy at the base of the fall with the potential energy at the top, resulting in KE = PE
1/2 MV^2 = M g H
1/2 V^2 = g H
where V is the velocity, g represents the acceleration due to gravity (9.8 m^2/s), and H is the height of the fall (8 m).
Therefore, v^2 = 2 * 9.8 * 8 = 156.8
So, v = √156.8 = 12.5 m/s
