A light ray propagates in Material 1 with index of refraction n 1 = 1.19 , strikes an interface, then passes into Material 2 with index of refraction n 2 = 1.37 . The angle of incidence at the interface is θ 1 = 31.9 °. Find the angle of refraction θ 2 .

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

The pressure increases by 1.0 x 104 n/m^2 for every meter of depth beneath the surface of the ocean. at what depth does the volume of a pyrex (bulk modulus 2.6 x 1010n/m^2) glass cube, 9.8 x 10^−2m on an edge at the ocean's surface, decrease by 7.5 x 10−10m^3? explain the formula beyond this point: p=1.0x10^4, b=2.6x10^10, l=9.8x10^−2, delta v=7.5x10^−10. at some point l needs to be cubed. why p is divided by delta v?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final