Complete these steps for each material listed in the table. Record your findings in the table. 1. Describe the appearance of the material. Include its color and state (solid or liquid).
2. Pour 4 cup of water into a small, clear container. Measure 1 teaspoon of the material, and carefully
pour it into the container. Look at the side of the container as you pour in the material. Decide
whether the material is less dense or more cense than water by observing whether the material
floats or sinks.
3. Swirl the container to see whether the material mixes with the water.
4. Rinse and dry the container and the measuring spoon after each use.

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =

Calculate the volume of this regular solid. what is the volume of the cone? round your answer to the nearest hundredth