Why is "work done/time taken" correct over "force × velocity" as a ...
Aug 9, 2021 · Both seem to be correct, as another answer also points out. Meaning, both formulas can be used to calculate power. But the fundamental definition of power is the latter, namely energy per …
Confusing definition of proper time – which is correct?
Dec 4, 2019 · The time that elapses on a single clock is the proper time for that clock. If a clock moves between two stationary clocks, the proper time it measures will be different from the time interval …
Why is the time of flight of a projectile on an inclined plane equal to ...
Jul 16, 2021 · For a projectile fired over horizontal ground, the time of flight is double the time taken for it to get to the highest point. This time can be found by considering vertical components only - it is the …
Time dilation in Einstein's train example (lightning strike)
Jul 10, 2024 · In your first paragraph, you assume that for an observer on the platform, the two lightning strikes are simultaneous --- that is, the time difference between them is zero. In your second, you say …
How exactly does energy transformation take place?
Feb 24, 2025 · But how does that happen exactly? Am I correct in assuming that it is different in every case? For instance, if chemical energy is being transformed into mechanical energy in the body, it …
Why is momentum defined as mass times velocity?
Sep 3, 2020 · 18 At the time Newton and Leibniz were working, both were trying to understand what was happening when mechanical systems changed speeds as a result of forces, that is, trying to find …
quantum mechanics - Understanding derivation Klein-Gordon equation ...
Nov 14, 2023 · However, is my derivation valid? For example, I squared the time-dependent Schrodinger equation, but this feels off to me, because I am not squaring the wave function but only …
Special Relativity: Which is the correct time taken for a pion ...
Apr 12, 2018 · 0 I'm struggling to ascertain which reference frame (pion or detectors) has the 'longer time taken' in the following example: Consider a pion which is travelling at 0.95c. It passes two …
Was Aristotle Actually Correct About Gravitation? [duplicate]
Nov 27, 2014 · Well, it suddenly occurred to me this morning that Aristotle was actually correct, and Galileo's experiment was incapable of discerning any difference in arrival times between the two …
Static friction when rolling with constant speed
Nov 30, 2023 · Is it correct that these forces are equal and opposite during start-up at the contact point in the first place? Also, I'm confused that "the normal force causes acceleration" but at the same time …