Орал қаласы 2018 жыл

Figure 4.3

1 N * 1 m = 1 N * m = 1 J.

20

A larger unit of work is the kilojoule. 1 kJ = 1 000 J.

30. Energy.

1. 
   What is Energy?
   

For instance, in Figure 4.5 the work done of the object is, W=50N*4 m =200J.

How much energy is spent? Since the energy spend is equal to the work done, the answer is: 200 J

Look at Table 4.1 and state how much energy we spent in the listed activities.

2. 
   
   жүктеу 1,45 Mb.
   
   Достарыңызбен бөлісу: