If the displacement, velocity and acceleration at an instant of a particle describing S. H.M are respectively 7.5m, 7.5m/s, 7.5m/s?. Calculate the
maximum velocity of the particle.

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.

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

During the past 150 years in the united states, how did energy consumption compare to population growth