a sound wave has a wavelength of 0.20 m what is the phase difference between the two points along the way which are 0.65 m apart

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.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static