Asound signal traveling underwater has a frequency of 230 hertz. the speed of sound under water is 1.45 × 103 meters/second. what is the wavelength of the sound signal?

Describe the path of a ray that approaches a mirror parallel to the principal axis.

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?