Which of the following statements is/are true? (Select all that apply.) Ferromagnetic materials can be magnetized more easily than other materials because their magnetic domains can be generally aligned. Unlike electric field lines, magnetic field lines can cross each other. Magnetic field lines form complete loops. Magnetic field lines exit the north pole of a magnet and reenter the south pole of a magnet.

a women have faced negative attitudes in some areas , but other

so easy. just google the electromagnetic waves and it’ll pop up.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.