A truck traveling at 60 km / h comes to a complete stop due to a traffic signal. Does this change in velocity violate the law of conservation of energy? Explain

In a laboratory, nakisha mixes sodium hydroxide solution with an indicator called phenolphthalein. when combined, they create a pink solution. nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color. how could she use the scientific inquiry process to explore it further?

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Aballet student who learns with the of his instructor is demonstrating learning.