Which of the following statements about the force on a charged particle due to a magnetic field are not valid?
check all that apply.
it depends on the particle's charge.
it depends on the strength of the external magnetic field.
it depends on the particle's velocity.
it acts at right angles to the direction of the particle's motion.
none of the above; all of these statements are valid.

The correct answer is "None of the above; all of these statements are valid." All the statements namely, it depends on the particle's charge, it depends on the strength of the external magnetic field, it depends on the particle's velocity, and it acts at right angles to the direction of the particle's motion are all valid. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help. 

Less force and energy was applied

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall