A stone of mass 0.6kg attached to a string of 0.5m is whirled in an horizontal circle of a constant speed. if the maximum tension (force) in the spring is 30N before it breaks. calculate (1) The maximum speed of the stone (2) The maximum number of revolution it can make.​

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.

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery