2021 Paper 1 Flashcards
Remember if Moment question isn’t working, what to do
CHECK IT DOESNT SAY MOMENT , and not FORCE!
Remember fire tension type math questions how to resolve the accerlwtion
Do it EXACTLY LIKE MATHS
- simultaneous equations and solve , rememebr if accelerating then there no way the weight can equal the tension…
How to EXPLAIN a shape of the graph
- so for field strength earth to Mars?
Explaining questions means describe shape and explain
- so curved on both sides, as field is inversely prop to r2 , and as it gets closer to centre, the field strength gers bigger
- there is a point where it is 0, as it is vectors and the fields act OPPOSITE EACH OTHER, and thus there wil be resuktsnt 0
EXPLAIN WHY ITS CLOSER TO MARS THEN EARTH ( because mass of earth is much bigger)
How to have equation for momentum in terms of mass and not v? (Ke)
Essentially if your stuck, what can you try doug
DONT FORGET to SQAURE BOTH SIDES OF EQUATION, this is one thing you can do , and then cknitnue to manipulate from there
Why is helium left earth atmosphere
- if they gave temp what MUST YOU SAY FOR ALL QS
- now that earth is cooler, but what could it have been before?
1) must say all at the same AVERAGE KE , not ke
2; earth hotter before, therefore possible for particles to leave atmospher
Why no error bars shown?
ABSOLUTE uncertainty ( be specific blud) is too small to be shown with scale
