It is said that Galileo dropped objects off the Leaning Tower of Pisa to determine whether heavy or light objects fall faster. If Galileo had dropped a
5.0-kg cannon ball to the ground from a height of 12 m, what would have
been the change in PE of the cannon ball?​

What are igneous intrusions and extrusions

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j