A radio wave has a frequency of 500,000 Hz. If the radio wave has the same frequency in air as in water, what is the ratio of the wavelength of the radio wave in air to its wavelength in water?

What can change the speed of sound as it travels through the ocean? a. salinity only b. density and salinity c. salinity and distance from land d. density and distance from land

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.

Element with 5protons and 3neutrons