Apendulum has 312 j of potential energy at the highest point of its swing. how much kinetic energy will it have at the bottom of its swing?

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.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

The energy released by a nuclear fusion reaction is produced when