The laws of refraction and reflection are the same for sound as for light. the speed of sound in air is 340 m/s and in water it is 1510 m/s. if a sound wave approaches a plane water surface at an angle of incidence of 12.0 °, what is the angle of refraction?

Acurve connects the data points that are plotted. (physical science chapter 11 motion)

Due sun 06/09/2019 11: 59 pm skip navigation questions correct q 1 [1/1] correct q 2 [1/1] correct q 3 [1/1] untried q 4 (0/1) untried q 5 (0/1) untried q 6 (0/1) untried q 7 (0/1) untried q 8 (0/1) untried q 9 (0/1) untried q 10 (0/1) grade: 3/10 print version start of questions two cyclists, 42 miles apart, start riding toward each other at the same time. one cycles 2 times as fast as the other. if they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist?

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force