potential energy barrier for the direct interconversion of the two gauche froms of butene id 3.6K cal/mol. What should be theexpected potential energy barrier for direct interconversion of the two gauch from of 1,2-dichloroethane van der Waals' radius of a covalently bond chlorine atom is about the same as that of a methyl group?

A particle of mass m moves under the action of a central force. The potential energy function is given by U(r)=mkr^(3) Where k is a positive constant and r is distance of the particle from the centre of attraction. (a) What should be the kinetic energy of the particle so that it moves in a circle of radius a0 about the centre of attraction? (b) What is the period of this circualr motion ?

There are two very small natural particle which are held fixed at a separation of 1 m from each other . Using some mechanism , one electron is transferred from particle to the other and electric potential energy lost in this process is converted into a photon of wavelength lamda_1 . When one more electron is transferred in the same direction , the wavelength of photon emitted is lamda_2 . If lamda_1 -lamda_2=5^pxx23^q calculate the value of pq. {:(0,1,2,3,4,5,6,7,8,9):}

Conformations are different arragements of atoms htat are interconverted by rotation about single bond. IN eclipsed conformation, the C-H bond on one carbon is directly aligned with C-H bond on the adjacent carbon. In staggered conformation, the C-H bond on one carbon bisect the H-C-H bond angle on adjacent carbon. The angle that seperates a bond on one atom form a bond on a adjacent atom is called a dihedral angle. A staggered conformation with two larger groups 180^(@) from each other is called anti. A staggered conformation with two larger group 60^(@) from each other is called gauche Which of the following conformer of butane has minimum energy?

(i) Use Gauss's law to find the electric field due to a uniformly charged infinite plane sheet. What is the direction of field for positive and negative charge densities? (ii) Find the ratio of the potential differences that must be applied across the parallel and eries combination of two capacitors C_(1) and C_(2) with their capacitances in the ratio 1 : 2 so that the energy stored in the two of two capacitors C_(1) and C_(2) with their capacitances in the ratio 1 : 2 so that the energy stored in the two cases becomes the same.