Answer:
Explanation:
The combined speed after collision can be determined by means of the Principle of the Energy Conservation:
The magnitud of the momentum of the combined mass immediately after the collision:
Answer:
Explanation:
Given
mas of block
speed of block
spring constant
As the mass collides with the spring its kinetic energy is converted to the Elastic Potential energy of the spring
Answer:
Explanation:
Newton's second law of motion is F = ma, or force is equal to mass times acceleration.
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1. Answer:
It allows scientists to predict things about objects that are too small to see.
Explanation:
Atomic models are crucial to the scientific study of atoms. Through models, we represent atoms that we actually cannot see. Observation based study and testing is done through that model which helps us find flaws in one model so that a better model is made. In this way, it is helpful to study about atoms through atomic models.
2. Answer:
The correct step in a scientific experiment involving acids and bases is:
Using an indicator to measure the hydrogen ion concentration of a solution.
Explanation:
Two acids can never neutralize each other. The pH of a neutral solution is 7. Whereas pH of an acid is always less than 7.
Indicators are used to measure the pH of solutions. They give different colors in solutions with different solutions. So, in an experiment to check if the solution is acidic or basic, we need to measure its hydrogen ion concentration for which an indicator is used.