Two children made a model fairground ride. They connected a battery to an electric motor to make the model turn.
The motor is not working.
a. What is wrong with this circuit?
b. Correct the above circuit. Draw a circuit diagram in which the switch can be used to
turn the motor on and off.

Electoral current force mechanical advantage if the wheel and axle is 2 n and the output force is 20 n

No because a circle or pie graph usually shows percentages you'd need a line graph

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.

Cardiac muscle causes movement in the bone.