The superposition of two harmonic oscillations of the same direction results in the oscillation of a point according to the law x = a cos 2.1t cos 50.0t, where t is expressed in seconds. Find the angular frequencies of the constituent oscillations and the period with which they beat.

Anonymous User Physics Oscillation 01 May, 2020 1 Answer 57 views



For a first order reaction A -> P, the temperature (T) dependent rate constant (k) was found to follow the equation
log k = – (2000) 1/T + 6.0. The pre-exponential factor A and the activation energy Ea, respectively, are

Anonymous User Chemistry Chemical Kinetics 01 May, 2020 1 Answer 65 views


Consider a reaction aG + bH -> Products. When concentration of both the reactants G and H is doubled, the rate increases by eight times. However, when concentration of G is doubled keeping the concentration of H fixed, the rate is doubled. The overall order of the reaction is

Anonymous User Chemistry Chemical Kinetics 01 May, 2020 1 Answer 61 views







A decapeptide (Mol. Wt. 796) on complete hydrolysis gives glycine (Mol. Wt. 75), alanine and phenylalanine. Glycine contributes 47.0% to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is?

Anonymous User Chemistry Biomolecules 30 Apr, 2020 1 Answer 66 views














A hydrocarbon (A) adds one mole of hydrogen in the presence of platinum gives hexane. When (A) was oxidised with KMnO4 it gave a single carboxylic acid, containing three carbon atoms. Give the structure and name of (A)

Anonymous User Chemistry Hydrocarbons 29 Apr, 2020 1 Answer 66 views

896 ml vapour of a hydrocarbon ‘A’ having carbon 87.80% and hydrogen 12.19% weighs 3.28 g at STP. Hydrogenation of ‘A’ gives 2-methyl pentane. Also the hydration of hydrocarbon ‘A’ gives compound ‘B’. Compound ‘B’ gives yellow precipitate with sodium hypoiodite. Find the structure of A and give the reactions involved.

Anonymous User Chemistry Hydrocarbons 29 Apr, 2020 1 Answer 80 views

A particle performs harmonic oscillations along the x axis according to the law x = a cos wt. Assuming the probability P of the particle to fall within an interval from —a to +a to be equal to unity, find how the probability density dP/dx depends on x. Here
dP denotes the probability of the particle falling within an interval from x to x dx. Plot dP/dx as a function of x.

Anonymous User Physics Oscillation 29 Apr, 2020 1 Answer 59 views

At the moment t = 0 a particle starts moving along the x axis so that its velocity projection varies as vs = 35 cos at cm/s, where t is expressed in seconds. Find the distance that this particle covers during t = 2.80 s after the start.

Anonymous User Physics Oscillation 29 Apr, 2020 1 Answer 58 views


At the moment t = 0 a point starts oscillating along the x axis according to the law x = a sin wt. Find:
(a) the mean value of its velocity vector projection (vs);
(b) the modulus of the mean velocity vector 1(v)1 ;
(c) the mean value of the velocity modulus (v) averaged over 3/8

Anonymous User Physics Oscillation 29 Apr, 2020 1 Answer 60 views

A point performs harmonic oscillations along a straight line with a period T = 0.60 s and an amplitude a = 10.0 cm. Find the mean velocity of the point averaged over the time interval during which it travels a distance a/2, starting from
(a) the extreme position;
(b) the equilibrium position.

Anonymous User Physics Oscillation 29 Apr, 2020 1 Answer 53 views


A particle performs harmonic oscillations along the x axis about the equilibrium position x = 0. The oscillation frequency is w = 4.00 /s .At a certain moment of time the particle has a coordinate X0 = 25.0 cm and its velocity is equal to Vx0 = 100 cm/s.Find the coordinate x and the velocity Vx of the particle t = 2.40 s after that moment.

Anonymous User Physics Oscillation 29 Apr, 2020 1 Answer 67 views








A point moves along the x axis according to the law x = a sin^2 (wt— π/4). Find:

(a) the amplitude and period of oscillations; draw the plot x (t);

(b) the velocity projection vx as a function of the coordinate x;draw the plot vx (x).

Anonymous User Physics Oscillation 28 Apr, 2020 1 Answer 62 views

A point oscillates along the x axis according to the law x = a cos (wt — π/4). Draw the approximate plots (a) of displacement x, velocity projection vx, and acceleration projection wx as functions of time t; (b) velocity projection vx and acceleration projection wx as functions of the coordinate x.

Anonymous User Physics Oscillation 28 Apr, 2020 1 Answer 60 views