Table of Contents

## What is the necessity of RMS value in the circuit?

Attempts to find an average value of AC would directly provide you the answer zero… Hence, RMS values are used. They help to find the effective value of AC (voltage or current). This RMS is a mathematical quantity (used in many math fields) used to compare both alternating and direct currents (or voltage).

## What is average and RMS value?

The RMS value is the square root of the mean (average) value of the squared function of the instantaneous values. Since an AC voltage rises and falls with time, it takes more AC voltage to produce a given RMS voltage than it would for DC. For example, it would take 169 volts peak AC to achieve 120 volts RMS (.

## What does RMS mean for speakers?

Root mean square

## Does pressure affect rms speed?

The rms velocity is directly proportional to the square root of temperature and inversely proportional to the square root of molar mass. Pressure is thus directly proportional to temperature, as required by Gay-Lussac’s law.

## What happens to RMS when volume increases?

This in turn means that the rms speed of the molecules, u, is unchanged. However, if the volume is increased, the molecules must move a longer distance between collisions. Consequently, there are fewer collisions per unit time with the container walls and pressure decreases.

## At what temperature will the rms speed of air molecules be double than that at NTP?

619∘C.

## What is the rms speed of air molecules?

For typical air at room conditions, the average molecule is moving at about 500 m/s (close to 1000 miles per hour). Note that the speed of sound is largely determined by how fast the molecules move between collisions, and not on how often they make collisions.

## At what temperature will the rms speed of hydrogen molecule be half of its value at 327 degree Celsius?

Here, the root mean square velocity of the molecules of hydrogen will become half of its previous value. Therefore, the hydrogen will be cooled at a temperature −123∘C such that the root mean square value of its molecules becomes half of its previous value. Hence, option A is the correct option.

## What should be the ratio of root mean square velocity of molecular hydrogen and molecular oxygen respectively?

Oxygen is 16 times heavier than hydrogen on a per atom or per molecule comparison (since both gases are diatomic in our everyday lives). RMS speed is inversely proportional to the square root of mass (molecular or molar). This means the rms speed of hydrogen should be √16 = 4 times faster….solution.

vH2 | = √ | mO2 |
---|---|---|

vO2 | mH2 |

## At what temperature is the rms speed of hydrogen molecules the same as oxygen?

We have given that Vrms of both the species, hydrogen and oxygen is equal. TO=1327+273=1600K= Temperature of oxygen (∴ Temperature should be inK. ) Hence option (B) is correct, 100K.

## At what temperature is the rms speed of hydrogen molecules?

(b) The rms speed of hydrogen molecules at 23 °C is 1920 m s–1. The escape velocity from the Earth is 11 000 m s–1. Explain why almost all the molecules of hydrogen that have ever been in the Earth’s atmosphere have escaped into space but many oxygen molecules have remained in the atmosphere.

## What is ratio of RMS speed VOF oxygen and hydrogen molecules at same temperature?

What is the ratio of r.m.s. speed of Oxygen and Hydrogen molecules at the same temperature? Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. ∴Coxy:CH=1:4.

## What is the ratio of root mean square speed and most probable speed?

For the ratio of root mean square speed, average speed and most probable speed, we use the formulae Vrms=√3RTM,Vav=√8RTπMand Vmps=√2RTM.

## At what temperature is the RMS?

Vrms=√3KbTm, where m is the molar mass of the gas in kilograms per mole, T is the temperature, K is molar mass gas constant. Therefore, option D is the correct answer and the temperature at which the rms speed of oxygen molecules become just sufficient for escaping from the Earth’s atmosphere is 8.360×104K.

## At what temperature will the oxygen molecule?

T=3200K=(3200-273)∘C=2927∘C.

## At what temperature will the speed of sound in hydrogen be the same as in oxygen at 100 C?

7∘C. Was this answer helpful?

## At what speed should a source of sound?

The speed of sound in air 330 m/s.

## At what temperature will the speed of sound in air be 3 times its value at 0 C?

1148oC.