A microwave oven is powered with an electron tube called a magnetron, which generates electromagnetic waves of frequency2.75 GHz. The microwaves enter the oven and are reflected with the walls. The standing wave pattern produced in the oven can cook food unequally, with hot spots in the food at antinodes and cool spots at nodes, so a turntable is often utilized to rotate the food and distribute the energy. If a microwave oven intended for utilize with a turntable is instead used by a cooking dish in a fixed position, the antinodes can appear as burn marks on foods such as carrot strips or cheese. The separation distance among the burns is measured to be 5cm ± 5%. From these data, compute the speed of the microwaves.