New Concepts/Shortcuts 10 Flashcards
perpendicular distance of of a point from a line formula
shortest distance between two skew lines
distance between parallel lines
conditions for coplanarity
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what kind of forces and attractions does cyclic compounds has?
and what of them do not play any role in stability of conformations
cyclic compounds have
electrostatic forces of attraction
torsional strain
angle strain
steric strain
but angle strain has no role in stability of conformations
condition of coplanarity for lines
equatino of plane general equation
does hexane dissolve in H2SO4 conc?
no
sunlight causes which kind of reactions?
radical reactions
family of planes
angle between line and plane
angle between planes formula
bisector of angle between two lines
obtuse and acute angle bisectors
area of trapezium
how to tackle variable dielectric across plates in capacitor problems
assume a dx lentgh of material and apply dx in the denominator of the normal capcitance formula sa its eknot A/d
put dx in place of d
then integrate
but the integration will include putting small slabs together in series
therefor we will apply series formula which is reciprocal one
hence….
how to tackle variable dielectric along plates in capacitor problems
assume a dx lentgh of material and apply adx in the numerotor of the normal capcitance formula sa its eknot A/d
put adx in place of A
then integrate
but the integration will include putting small slabs together in parallel
therefor we will apply parallel formula which is normal addition one
hence….
how to tackle variable dimensions of plates in capacitor problems
assume dx length of slab and apply normal formula there
but the length here will be different: d+x tan theta
and area will also be different which will be adx
they are in parallel and hence they would be simply added
how to tackle variable dimensions of dielectric in plates in capacitor problems
assume a dx length and then measure them to be in series with each other and hence accordingly write the formula and integration
comparision of electric and magnetic and coil dipoles’ dipole moment formula and field at a distance formula
torque formula for electric dipole
emf induced in coil rotation in uniform magnetic field
resonance frequency condition
quality factor formula
what should be kept in mind for these questions
one value can make the lines parallel to each other and hence must be rejected
inductive reactance formula
capacitive reaction formula
Xc= 1/WC` change pic
net impedance and angle made with current formula
uses of
aspartame
saccharin
sucralose
aspartame: The use of aspartame is limited to cold foods and soft drinks because it is unstable at cooking temperature
saccharin: - it is the first popular artificial sweetening agent, excreted from the body in the urine unchanged, with great value to diabetic persons and people who need to control their intake of calories
sucralose: its appearance and taste are like sugar. It is stable at cooking temperature. It does not provide calories.
