What is the speed of light (f=5.09 × 10^14 Hz ) in rock salt? 1.81 × 10^8 m/s

1.97 × 10^8 m/s

3.00 × 10^8 m/s

4.98 × 10^8 m/s

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection