Increasing your water heater temperature by just 10ÂºF from 130ÂºF to 140ÂºF may increase heat loss resulting in a larger electric bill from $30 to $75 dollars annually. Setting the temperature to 140ÂºF can also increase demand losses resulting in an annual expense of up to $500 dollars.
Material that is very strong and tough but shows very little elongation as it absorbs energy Kevlar Material that is the best choice for the support beams of a building
(Teacher shows the power point information.). Opaque materials do not let any light pass through. You can't see through an opaque material. It either reflects or absorbs the light rays that strike it. Wood is an opaque material.