Recent content by nguyentech

Hey, I need to make an AC Generator for a school physics assignment. It will be marked on how much voltage it generates. I will be doing this using induction with the following equipment: * Permanent magnet * Coil/Wire * Iron Core * Split Rings/Brushes ? My questions are: * What's...

Newton's Law question --> Tension Attached in this message is a question from my school pastpaper... I believe the answer is D... This is because I took John and Joan as one system... Therefore their mass is 130kg (together)... F = ma 100 = 130*a a = 0.77 each However, my teacher says...

For lift accelerating upwards : T = mg + ma, therefore answer = 84*9.8 + 84*2 = 991 For lift accelerating downwards : T = mg - ma, therefore answer = 84*9.8 - 84*2 = 655

This question has been troubling me... : A physics teacher decides to use bathroom scales (calibrated in Newtons) in an elevator. The scales provide a measure of the force with which they push up on the teacher. When the lift is stationary the reading on the bathroom scales is 823 N. What...