Physics Questions
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During a state change, the temperature of the substance also changes
Pascal's law states that when pressure is applied to a confined fluid it is transmitted equally in all directions
To calculate work, you must multiply ____ by the distance through which it travels.
The US Customary unit of mechanical power is the ____
A gas expands to fill its container.
If 2000 N⋅m of work is required to move an object 20 m, how much force is applied to the object?
Pressures below atmospheric pressure can be measured in inches of mercury column.
The sun heats the earth through conduction
Energy that is stored is called ____ energy
Copper conducts heat better than glass
To calculate specific enthalpy, you must divide a substance's total enthalpy by its ____.
generation of combinational tones (difference tones and summation tones) is an example of a. intermodulation distortionb. transient distortionc. frequency distortiond. b and c
the property of sound waves to bend around obstacles and reforms a. reflectionb. compressionc. diffractiond. refractione. absorption
t or fat the resonant frequency stiffness reactance and mass reactance cancel out each other
t or fthe absorption coefficient varies with the intensity of the incident wave
if the fundamental frequency of a string fixed at both ends is 200 Hz, the frequency of the third harmonic is a. 300 Hzb. 600 Hzc. 900 Hzb. 400 Hz
as the absorption coefficient increases, a. reflection decreasesb. reverberation time decreasesc. reverberation time increasesd. reflection increasese. a and b
t or fthe term just noticeable difference refers to the psychological sensation that corresponds to a change in the physical stimulus that can barely be detected
if the impedance is infinite,a. the intensity of the reflected wave will equal the intensity of the incident waveb. the intensity of the reflected wave will be lower than the intensity of the incident wavec. the intensity of the reflected wave will be higher than the intensity of the incident waved. there will not be any reflected wave
time required for sound energy to decay by 60 dBa. fall timeb. rise timec. t_60d. plateau