Consider a string of total length l, made up of three segments of equal length. the mass per unit length of the first segment is μ, that of the second is 2μ, and that of the third μ/4. the third segment is tied to a wall, and the string is stretched by a force of magnitude ts applied to the first segment; ts is much greater than the total weight of the string. how long will it take a transverse wave to propagate from one end of the string to the other? express the time t in terms of l, μ, and ts.

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?