How does energy travel in a mechanical wave?

a) in a medium

b) in space

c) in time

d) in a vaccum

: u in advance

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.