What device is like the reverse of an electric motor?
a. generator
c. steam engine
b. tesla coil
d. battery

A) Generator

Explanation:

In electric motor the electric current flows into the coils will produce the magnetic moment in the coil due to which the coil will start rotating between the magnetic field present in that region.

So here the electrical energy is converted into mechanical energy.

Now when we take a look into the mechanism of generator then in that part the coil is first turned by some mechanical process due to which its mechanical energy is converted into electrical energy.

So we will get electric current as output

So here they both are reverse of each other and hence correct answer will be

A) Generator

28. evolution

29. environment, survive, offspring  

explanation:

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.