If you were able to make a 3 dimensional model of magnetic force, using a magnet and magnetic field lines, which 2 characteristics might your model have? a) The arrows on the field lines would point from the magnet's south pole to its north pole. b) The field lines would cross paths between one pole of the magnet and the other pole. c) the field lines would exist all around the magnet. d) the field lines near the magnet would be close together.

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.)