What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 23 km/h and the coefficient of static friction between tires and track is 0.24?

According to the tide table below what time of day will the highest tide occur?

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Diamond will scratch quartz. true or false