A kitchen drain is blocked with grease. Using your knowledge of chemical reactions and transfer of energy, how can you unplug this drain without physically touching the blockage?
A. Use a drain cleaner that absorbs energy.
B. Use a drain cleaner that releases energy.
OC. Use a drain cleaner that slows kinetic energy.
OD. Use a drain cleaner that increases potential energy.
O E. Use a drain cleaner that stores potential energy.

Under normal temperature and pressure conditions, what type of rock could be formed from weathering in erosion of metamorphic rock

If we relied solely on the nonrenewable resources found in the u.s., which one would we run out of first at current usage levels? a. natural gas b. oil c. uranium d. coal

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.