When a man walks across the carpet and reaches for the door knob, why does he get shocked? doorknob Question 3 options: There is an electric current in the door knob The carpet was exposed to electricity. Atoms are moving faster in the door knob than in his hand When he drags his feet across the carpet he gains an electric charge, and then the electrons jump from his hand to the doorknob.

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.)