5. Extension 1: The formula for potential energy is PE = m. g.h. In this formula energy (in joules), m stands for mass (in kilograms), h stands for height (in me
acceleration caused by gravity. On Earth's surface, g is 9.8 m/s2. This means
of a falling object increases by 9.8 m/s.
Calculate the potential energy of a 20-kg sled at 40 meters. / Show
your work

The plum pudding model of the atom state that ?

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.