mechanical (sound) waves are unable to travel through a vacuum such as through space but radio waves are transmitted to earth from satellites. how is this possible

Interactive Solution 26.7 offers one model for problems like this one. In a certain time, light travels 3.97 km in a vacuum. During the same time, light travels only 2.61 km in a liquid. What is the refractive index of the liquid

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

Why is sustainable use important?

A 125kg automobile with a tangential speed of 48.0 km/h follows a circular road that has a radius of 35.0m how large is the centripetal force

According to Ptolemy's model of the movement of celestial bodies, A. the earth rotates around the sun. B. the sun is the center of the universe. C. the earth rotates around the moon. D. planets orbit in circular paths around the earth.

At a certain location, the horizontal component of the earth's magnetic field is 2.5 * 10-5 T, due north. A proton moves eastward with just the right speed for the magnetic force on it to balance its weight. Find the speed of the proton.

An acrobatic airplane performs a loop at an airshow. The centripetal acceleration the plane experiences is 14.7 m/s2. If it takes the pilot 45.

Which of the following was NOT an outcome of Bacon's rebellion? A. A more direct focus on the "Indian Problem" B. A more focused plain to isolate black slaves from white servants C.

A science class did an investigation to see how many breaths it took for each student to blow up a balloon. Jason blew up his balloon with the fewest breaths. Which of these might explain why Jason took fewer breaths to blow up his balloon? A.

How the behavior of waves is affected by a medium