A bulldozer does work at a rate of 12000000 N every mintute How powerful is it?

Power is defined as the rate at which work is done. In this case, the bulldozer does 12000000 J of work every minute. Therefore, its power is:

$$P = \frac{W}{t} = \frac{12000000 \text{ J}}{60 \text{ s}} = 200000 \text{ W}$$

This means that the bulldozer is 200 kW powerful.