Asmall ice flakewith a mass of 0.1 kg is released from rest at point a. when it reaches point bat the bottom of the hemispherical bowl the ice flakeis observed to have a speed of 1.8 m/s. calculate the work done by friction on the ice flakewhen it moves from ato b.

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.)