Lexy and jin study the diagram shown. lexy says that the diffraction angle is the one labeled r, and jin says that the diffraction angle is the one labeled s. which best explains who is correct? a: lexy is correct because angle r is between the incident wave, n = 0, and a diffracted wave. b: lexy is correct because angle r includes the diffracted wave at n = 1. c: jin is correct because angle s is measured from the barrier and includes n = 2, the wave that has the most diffraction. d: jin is correct because angle s is between the dimmest order bands, n = 1 and n = 2

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?