1. A 30kg mass is lift to height of 1.5mm, calculate: (a) The velocity before it hits the ground if it's dropped ​

Which feature of a heating curve indicates a change ofn state

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.

Which subatomic particle has a negative charge