Zeros are always considered significant digits when they are to the right of
the decimal point and when they are between the decimal point and another
digit, as in 13.04.
true or false?

answer: strength i guess

explanation:

pe = weightxheight = 2000x1000=2,000,000joules

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.