The tuning fork’s vibrations were directing along the length of the tube with its prongs lined up along it. The tube’s length was adjusted until the volume of the sound was at its highest amplitude. Then the length of the column was measured by its resonance. These steps were repeated for the other two tuning forks. The hypothesis was not supported because the highest frequency had the lowest length of the tube.
The most rapid changes in time scale occur during the release stages of plosives, which order is of 5-10ms. For individual representation of the harmonics of male speech, a frequency resolution less than the minimum expected f0 for males approximately 50 Hz is required. Consequently, there is a direct trade off to be considered between frequency and time resolution and this can be controlled by altering the bandwidth of the spectrograph’s analysis filter. Usually, this is indicated as wide or narrow based on the relation between the filter’s bandwidth and the f0 of the speech being
This complicates comparison of their relative strengths. For example if you consider a bandwidth of 1 MHz, man-made fields are stronger than background natural ones, whereas if you consider entire range of 300 GHz, natural fields may be stronger than man made ones. While estimating exposure from an emitter e.g. a mobile phone, there are several considerations such as frequency of incident wave, distance from the emitter, angular direction, environmental modifiers such as reflection, diffraction, shielding etc. all of which can modify the fields.
QRS complex indicates ventricular depolarization.ST segment shows the time between ventricular depolarization and the starting of repolarisation. And the T wave shows the ventricular repolarisation. For detecting the heart rate QRS complex detection is necessary. Among all the waves in the signal the QRS complex has higher
While explaining the ‘emotional hijacking’ in human brains, Le Doux (1986) has mentioned that amygdala, in the limbic system of the human brain, acts as an alarm system which, through specific emotional response, copes up with the emergency situation and alerts the major parts of brain. 'It triggers the secretion of the body's fight-or-flight hormones, mobilizes the centres for movement, and activates the cardio-vascular system, the muscles, and the gut' (Goleman, 1995; pp 16-17), Sensory signal from sensory organs first goes to brain's thalamus and across a synapse it reaches the amygdala. From thalamus, another signal is rooted to the brain's rational part of
The experimental Ksp at 291.15 K was found to be 7.10 x 10-4 + 5 x 10-6 and compared to the literature value of 3.8 x 10-4. Since ΔH° reaction and ΔS° reaction was assumed to be nearly independent of temperature, the change in enthalpy and entropy of the reaction was found using the gradient and intercept respectively of the linear plot of lnKsp versus the reciprocal of temperature. Using van’t Hoff equation, ΔH° reaction and ΔS° reaction was found to be 44 ± 1.3 kJ K-1 mol-1 and 89 ± 4 J K-1 mol-1
As mentioned in answer to question to 2b, ionic compounds have free mobile ions for conduction of electricity only in the molten state and in aqueous state. Hence, given substance is most likely to be ionic as it exhibits conductance only in these states. In addition to that, it has high melting point, which is characteristic of ionic compounds.  4) A lustrous grey – white solid melts at 1650°C. It is electrically conductive as both a solid and a liquid, but not soluble in either water or any organic solvent.
These lower alkyl derivatives are sufficiently volatile for static reaction headspace analysis, and detection limits obtained by electron impact MS are below 0.05 µg ml−1 with respect to the injection solution. The method was used to demonstrate that levels of methanesulfonic acid esters in a drug substance (a mesylate salt that had been processed using methanol and ethanol) are below 1 µg
Some lamps only need a simple resistor to control power. LEDs need a low power resistor for current control. The resistor is not acceptable for larger power lamps because it creates a lot of waste heat and therefore reduces efficiency. Electronic ballasts usually change the frequency of power to a lamp from 50/60 Hz to 20 kHz+. Electronic ballasts are usually viewed as being more efficient because by running a lamp at a higher frequency you get more efficacy or brightness from the lamp above 10 kHz.
In Preferential sampling the process that determines the data location and the process being modeled are stochastically dependent. In the over sample are the action of sample importantly higher than the doubly the twice the band width or peak relative frequency of the signal comprising sampled. Over sampling sample aids avoid aliasing, answer and brings down noise. The equation is used fs=2bb Where fs are the sample relative frequency and b are the bandwidth or maximum relative frequency of signal. Then