Question

study the various instantces of transformation of energy you see ​

Answer 1

Answer:

See the fan above you. Here electrical energy supplied to it is being converted into kinetic energy of the fan blades which rotates the fan.

When you see into the phone the chemical energy of the phone battery changes into first electrical energy which runs the phone and then this electrical energy changes into light energy which helps you see what you see in the phone screen.(not in class)

When you charge this same phone the electrical energy of the mains changes into the chemical energy of the battery of the phone.(not in class)

When you see the tubelight the electrical energy of the mains changes into the light energy of the tubelight.

In our school there are small speakers fitted on the wall. Here the electrical energy changes into the sound energy.

In microphones during school assemblies the sound energy of us changes into the electrical energy in the wires connected to the loudspeakers.

When the teacher speaks. His muscular energy(chemical energy of the food he eats) changes into sound energy of his voice.

Explanation:

Answer 2

write the following statements in if-then form

1.  the opposite angles of a parallelogram are congruent  

2. the diagonals of a rectangle are congruent  

3.  the segment joining the vertex and the mid-point of the base is perpendicular to the base