The Minkowski diagram shows two inertial reference frames: frame with axes and and frame with axes and . Frame moves at a speed of relative to frame . The red line shows the world line of a light bulb that is stationary in frame and is initially off. At and , the light bulb flashes for a fraction of a second. In frame , the amount of time between the flashes, , is 10 seconds. How much time passes between the flashes in frame ? Give your answer to 3 significant figures.