Someone stuck a piece of chewing gum on the outer edge of a blade on a ceiling fan. The radius (r) of where the gum is from the center of the spinning fan is 0.60m. The period (T) that it takes for the blade to complete one revolution is 0.25seconds on its slowest speed setting. If we estimate the piece of chewed gum to have a mass (m) of 0.0026Kg, then how much centripetal Force (Fc) is on the gum when the fan is spinning at this speed?

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)