Which statements accurately describe Earth's magnetuc field? Check all that apply

o The magnetic field lines flow from Earth's geographic South Pole to Earth's geographic North Pole.

o The magnetic field is created by magnetic rocks on the surface.

o The magnetic poles line up exactly with Earth's geographic poles

o The magnetic field is generated in Earth's core

o The magnesc Feld is similar to the magnetc Field of a bar magnet

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?

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.)