Rae_4 said:Homework Statement
A moving particle encounters an external electric field that decreases its kinetic energy from 8560 eV to 6770 eV as the particle moves from position A to position B. The electric potential at A is -50.5 V, and the electric potential at B is +25.9 V. Determine the charge of the particle. Include the algebraic sign (+ or −) with your answer.
Homework Equations
V=EPE/q, EPE=qEx=KE
The Attempt at a Solution
ΔKE/ΔV=q
The energy is given in eV. The charge of an electron is 1.6021765 × 10 −19 coulomb. That's pretty small.Rae_4 said:nothing I have in that formula would give me a number that small. Are my formulas incorrect?
The value of q for a moving particle can be found by using the equation q = m*v, where q is the charge of the particle, m is the mass of the particle, and v is the velocity of the particle. This equation is based on the concept of charge-to-mass ratio, which is a fundamental property of all particles.
Yes, q for a moving particle can change over time. This can happen if the particle interacts with other particles or fields, which can cause changes in its charge or velocity. Q can also change if the particle undergoes a nuclear reaction or decays into other particles.
The unit of q for a moving particle is coulombs (C). This is the standard unit of electric charge in the International System of Units (SI). It is defined as the amount of charge that passes through a point in an electrical circuit in one second when a current of one ampere is flowing.
The value of q can affect the motion of a particle in several ways. If the particle has a positive charge, it will be attracted to negatively charged particles and repelled by positively charged particles. The opposite is true for a particle with a negative charge. Additionally, the magnitude of q can affect the strength of the force acting on the particle, which can impact its acceleration and velocity.
Finding q for a moving particle is important because it allows us to understand and predict the behavior of particles in electric and magnetic fields. This knowledge is crucial for various scientific and technological applications, such as designing electronic devices and studying the properties of matter.