Ablock of mass 3 kg slides down an inclined plane inclined at 30° with respect to horizontal. the frictional force between the block and the plane is 8.7 n and the length of the plane is 1 m. what is the work done by the net force when the block reaches the bottom of the plane?

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.)