Suppose two stars are in an orbit with a period of 10 years, and each star has a mass of one solar mass. a) if the orbit is circular and has a maximum separation of 1" between the stars, how distant is the binary? b) explain qualitatively how you would determine that the orbit is circular if the trace of the orbit on the sky is 1" in the long direction and 0.1" in the short direction, and explain one other quantitative thing you know about the binary based on that ratio

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

What are similarities and differences between refraction, reflection, diffraction and absorption?

** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils