subjects
physics
if the diagram is wrong the algebra cannot save it. post the problem and a tutor starts where it actually starts.
where it usually goes wrong
the six that cost
the most marks
free body diagrams
the step people skip to save time, and the reason the answer comes out negative. every force, nothing invented, nothing doubled.
signs and axes
you choose which way is positive, then you live with it. most sign errors are a choice made twice.
energy or momentum
momentum conserves in collisions, energy only if it is elastic. picking the wrong conservation law makes a solvable problem impossible.
circuits
reduce series and parallel step by step rather than all at once. kirchhoff is bookkeeping once the loops are labelled.
rotation
torque, moment of inertia and angular momentum mirror force, mass and momentum. the analogy does most of the work.
units
dimensional analysis catches a wrong equation before you put numbers in it.
what to post
a photo of the problem, or a sentence about where you got stuck. set the deadline and attach anything that matters — the sheet, your working, the slides.
verified tutors send offers with a price, a rating and a completion rate, and you pick who helps you. the tutor works it with you, so the next one is yours. more questions.
related
post it in the app
physics, any level.
or scan to get it on your phone