Barnard’s Star is located 5.582 x 1013 km from the Sun. A) Which unit of measurement would be more appropriate to use when measuring this distance?

B) Convert 5.582 x 1013 km into the unit you chose from part A

(this Is from astronomy) ​

Apiano tuner uses a tuner to create a tone of 5.00 x 10² hz. when a key on the piano is struck he hears 5 beats per second. what is a possible frequency of vibration for the piano string? 2500 hz 1300 hz 605 hz 495 hz

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

What are the theoretical properties of a gas at a temperature of 0 kelvin?