Помогите подчеркнуть сказуемое
1. The body may be acted on by any number of external forces having arbitrary directions and
applied at arbitrary points of the body. 2. This engine is usually referred to as an internal
combustion engine because fuel is burned within its cylinders or combustion chambers. 3. An
interesting case involving parallel forces occurs when a body is acted on by two forces which
are equal in magnitude but opposite in direction and whose lines of action do not coincide. 4.
The resistance of a given conductor depends on the material it is made of. 5. A battery or
other source supplies a potential difference for the circuit it is connected to. 6. The
performance of a given tube depends upon the efficiency free electrons are produced with. 7.
Whatever the nature of the tube and the arrangement of electrodes, an emitting electrode is
not dispensed with. 8. There is, however, one particular mode of variation which is met with
in practice so frequently that it is worth while to develop formulas for this special case. 9.
This phenomenon is accounted for by the sudden rise of temperature. 10. Newton’s ‘Particle
Theory’ is sometimes referred to as the ‘Corpuscular Theory’ since corpuscles are very small
particles. 11. Every breach of rules was dealt with as a breach of the law and punishment was
proportionally severe. 12. When the molecules of even a good insulator are acted upon by an
electric field, there is a motion of electrons due to this field.

1may be acted 2 referred to as3 involving 4 depends 5 connected to6 depends7 emitting8 There is9 accounted10 referred11 was12 acted

Omg