A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium, Does the pulse have a definite frequency.

A narrow sound pulse (for example,a short pipe by a whistle) is sent across a medium Does the pulse have a definite (i) frequency,(ii)wavelength,(iii)speed of propagation?

A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium, Does the pulse have a definite wavelength.

A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium, Does the pulse have a definite speed of propagation.

A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium,) If the pulse rate is 1 after every 20 s, (that is the whistle is blown for a split of second after every 20 s), is the frequency of the note produced by the whistle equal to 1//20 or 0.05 Hz ?

A narrow sound pulse (for example,a short pipe by a whistle) is sent across a medium If the pulse rate is 1 after every 20 s, (i.e. The whistle is blown for a split second after every 20 s),is the frequency of the note produced by the whistle equal to 1/20=0.05Hz ?

A gas in equilibrium has uniform density and pressure throughout its volume. This is strictly true only if there are no external influences. A gas column under gravity, for example, does not have uniform density (and pressure). As you might expect, its density decreases with height. The precise dependence is given by the so-called 'law of atmospheres' n_2 = n_1 exp[-(mg)(H_2-H_1)/(kT)] where n_2,n_1 refer to number density at heights h_2 and h_1 respectively.Use this relation to derive the equation for sedimentation equilibrium of a suspension in a liquid column: n_2= n_1 exp[(-mgN_a)/(RT) (1-(rho)/(rho))(h_2-h_1)] where rho is the density of the suspended particle, and rho' that of surrounding medium. [N_A is Avogadro's number, and R the universal gas constant].

Figure shows a potentiometer with a cell of 2.0 V and internal resistance 0.40 Omega maintaining a potential drop across the resistor wire AB. A standard cell which maintains a constant emf of 1.02 V (for very moderate currents upto a few mA) gives a balance point at 67.3 cm length of the wire. To ensure very low currents drawn from the standard cell, a very high resistance of 600 k Omega is put in series with it, which is shorted close to the balance point. The standard cell is then replaced by a cell of unknown emf epsilon and the balance point found similarly, turns out to be at 82.3 cm length of the wire. What purpose does the high resistance of 600 kOmega have? :