You want to create standing  waves in a string of length 1.50 m, by attaching different masses on the end of the string passing over the  pulley. You then set frequency to oscillate at 60.0 Hz. Assuming the linear mass density of  the string is 3.5 × 10−4/, what masses should you hang on the string to produce standing waves of  the first, second and fifth harmonics?

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.