For ease of installation, a cabin that is used occasionally is supplied with baseboard electric heating. These are 30-amp circuits powered with 220 volts. To supply the power of 20 kW, a) how many circuits are needed, and b) what is the resistance of each baseboard strip in a single circuit

English can you write this in english do we can you

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

Because its reliable.   there is no pollution  the chances of a radiation leak is low