If the angle of refraction is 20 degrees what is the angle of incidence

25pts the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

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