Name Date
Period
Workbook Activity
22
Chapter 5, Lesson 1
What Is Work?
Directions On the line, write the word or words that best complete the sentence.
1. When work is done, an object changes its
2. Work is done when a force moves an object in the
of the force that is applied.
3. To measure work, you must
through which it acts.
4. Work is measured in newton-meters, or
the force by the distance
5. The formula for measuring work is
Directions Use the formula work = force X distance to find each answer. Give the answer in joules.
6. Julie rolled a 2-kg ball down a ramp 10 meters long.
(Romamber 1 Iro 98 newtons.) How much work was done?

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

thats how its supposed to be

10 years is the answer

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.