Web– The maximum kinetic energy of the photoelectrons is independent of the intensity of the incident radiation – This is because each electron can only absorb one photon – Kinetic energy is only dependent on the frequency of the incident radiation – Intensity is a measure of the number of photons incident on the surface of the metal WebDec 4, 2024 · 0. Nope. Think of the formula for KE. Mass is never negative, and even if the velocity is negative, its squared so the negative sign goes away. Gravitational Potential can be negative depending on where you define your potential to be zero. But really, only changes in potential energy are relevant. Its only when the gravitational potential ...
Can total energy be negative physics? - Reimagining Education
WebW= F•d. W= F * d cosθ. What are the three situations in which the direction of force affects work? 1) Force has a component in SAME direction of displacement= Positive Work. 2) Force has component that is in the opposite direction of displacement= Negative work. 3) Force is perpendicular to displacement= NO work is being done. WebOct 8, 2024 · Nov 7, 2024 at 15:39. 1. No, specific kinetic energy requires specific momentum and since, after measurement, the particle has a very specific position, it … bishop of norwich twitter
What is kinetic energy? (article) Khan Academy
WebThe force exerted back by the spring is known as Hooke's law. \vec F_s= -k \vec x F s = −kx. Where F_s F s is the force exerted by the spring, x x is the displacement relative to the … WebOn the other hand, if the total energy is negative, then the kinetic energy must reach zero at some finite value of r, where U is negative and equal to the total energy. The object can never exceed this finite distance from M , since to do so would require the kinetic energy to become negative, which is not possible. Web7.11. The quantity 1 2 mv 2 in the work-energy theorem is defined to be the translational kinetic energy (KE) of a mass m moving at a speed v. ( Translational kinetic energy is distinct from rotational kinetic energy, which is considered later.) In equation form, the translational kinetic energy, KE = 1 2 mv 2, 7.12. bishop of moray ross and caithness