6. A person lifts a package weighing 75 N. If she lifts it 1.2 m off the floor, what is the packages potential energy?

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.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

If a simple machine reduces the strength of a force, what must be increased?