Physics, Chemistry, Mathematics Forums

In Organic Chemistry, how do you calculate the double bond
equivalent ( Degree of Unsaturation ) for a compound of the given
molecular formula.

the work of 4 labourers can be checked by any one of the seven supervisors, then the probability that all the 4 labourers are checked exactly by two supervisors is

(A) 32/343
(B) 2/7
(C) 12/49
(D) 6/49

A rope of length l and mass m hangs from the ceiling. If a wave of frequency n propagates through the rope, find the phase difference between the top and the bottom of the rope.

Please Solve This.

A triangular wave pulse on a string with a tension F is moving in the positive x direction with a velocity of 50 m/s. The linear mass density is m = 0.080 kg/m. The shape of the pulse is as shown. Show that the energy of the pulse is E=2Fh²/L. Find the value of E.

                               /\                      

                           /       \                   H = 1.5m

_______________/              \______________

                        < 2L=20cm >

how can i provide rolling action to magnetic or electric dipole kept in electric or magnetic field as the case maybe?

RESPECTED SIR,

WHAT CAN BE THE EXACT  DEFINITION OF AROMATICITY IN THE CASE OF  POLYCYCLIC COMPOUNDS.? BECAUSE THERE ARE MANY POLYCYCLIC COMPOUNDS WHICH DONOT FOLLOW HUCKLE'S RULE BUT THEN TOO THEY ARE DIFINED AS AROMATIC. for e.g  PYRENE.....HOWEVER IN I.L.FINAR I FOUND THAT THE IN SUCH CASES WE CONSIDER ONLY PERIPHERAL ELECTRONS FOR HUCLE RULE....NOW WHAT ARE PERIPHERAL e's.

integrate f(x)= x tan(x)/(sec(x) cosec(x)) from 0 to pie.

calculate the area of the triangle PQR, using integration such that P(2,1), Q is (3,4) and R is(5,2 ). how can i generate a function to integrate and solve the problem?

RESPECTED SIR,

CAN   HF BE USED AS CATALYST (INSTEAD OF AlCl₃) for  ALKYLATING BENZENE WITH ANY ALKYL HALIDE IN FREIDEL CRAFT ALKYLATION?

RESPECTED SIR ,

PLEASE TELL ME THE DETAILED SOLUTION FOR THE QUESTION BELOW

Q: A WATER-FILLED HOLLOW GLASS PRISM IS MOUNTED ON A SPECTROMETER AND A PARRALEL BEAM OF MONOCHROMATIC LIGHT IS INCIDENT ON ONE OF THE REFRACTING FACES FROM THE SIDE OF THE BASE. THE ANGLE OF PRISM IS 60 DEGREE. ON REFRACTING THROUGH THE PRISM:-

A) THE EMERGENT BEAM DEVIATES AWAY FROM THE BASE .

B)THERE IS A POSITION OF THE PRISIM FOR MINIMUM DEVIATION.

C)THE R.I OF WATER W.R.T GLASS ALONECAN BE CALCULATED.

D)THE R.I OF WATER W.R.T AIR CAN BE COMPUTED.