A photon and a mass m move directly toward each other. They collide head-on and create a new particle. If the total energy of the system is E, how should it be divided between the photon and the mass m so that the mass of the resulting particle is as large as possible

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

What is the final velocity of the initial velocity of 25 and -50?

Which describes increasing the efficiency of energy resource