Which part of the ear vibrates at the frequency of sound waves

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Why do electron microscopes have higher resolving power than light microscopes?

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.