Molecular Physics | Thermodynamics Answers

If 30 J of work was performed by a system in every way was insulated. How much heat energy is transferred? 

While traversing session road, you saw the arrows painted on the roads. You ignored the arrow and continued walking. Suddenly you saw a policeman who is 5 m away from you. How long will it take for the policeman to arrive at your location if he is walking with a speed of 2 m/s? 

An ideal gas with gamma=1.30 occupies 7.0 L at 300 K and 200 kPa pressure.

It is compressed adiabatically to 1/7 of its original volume, then cooled at constant volume to 300 K, and finally allowed to expand isothermally to 7.0 L.

The pressure of an ideal gas is reduced by 50%, resulting in a decrease in temperature to 75% of the initial value. Calculate the ratio of the final to initial volumes of the gas.

1.   A standing wave has a frequency of 324 HZ.  It is vibrating in 4 sections.  Calculate the velocity of the wave if the length is 3 metres.  L=n λ/2   (/2)

B.  If the length of the string was shortened to 2 metres, determine the period of the wave?  (/2)

 C.  Determine the fundamental frequency (n=1) for both lengths of string.  (/2)

What is the difference between a reflected wave at a fixed-end versus a free-end boundary?

1. Red Light in air has a frequency of 4.3 x 1014 Hz. What is the speed in glass for red light if it has a wavelength of 4.65 x 10-7 m? (/2)

1. The wavelength of electromagnetic waves from a radio station is 2.97 x 102 m.  What is the velocity of the wave if the frequency is 1.00 x 106 Hz (/2)

A wave is 2.30 m long before transmission. After transmission, it is  travelling at 5.26 m/s with a wavelength of 1.75 m. What is the velocity  of the wave before transmission? 

A transmitted wave with a length of 2.00 m can travel 75.0 m in 30.0 s. If  the wave was travelling at 3.00 m/s in the initial medium, what was the  wavelength?