The rule that validates the statement that matter can neither be created nor destroyed is the law of conservation of mass. This principle states that the total mass of a closed system remains constant over time, regardless of any physical ...
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More energy is spent in climbing stairs because the person works against gravity. When climbing stairs, the person must lift their body mass upward, opposing the force of gravity. This requires expending energy to overcome gravity’s resistance, making the task ...
When the speed of a moving object doubles, its kinetic energy quadruples. Kinetic energy is directly proportional to the square of the velocity according to the kinetic energy formula. Therefore, when the speed doubles, the kinetic energy increases by a ...
The drawn bow does not have kinetic energy. Kinetic energy is the energy possessed by an object due to its motion. While the other options involve objects in motion—fired bullet, flowing water, and moving hammer—the drawn bow is not in ...
Ice floats in water, but sinks in alcohol because ice is lighter than water and heavier than alcohol. This buoyancy phenomenon occurs due to differences in density. Ice has a lower density than water but a higher density than alcohol.