Oxygen is needed by all cells of most organisms for the release of energy from what in photosynthesis?

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.