Asimple pendulum has a period of 3secs. if the value of g is 9.9m/s^2. calculate the length of the pendulum

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

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.

Select the correct answer. what does the process of natural selection involve?