Questions from Modern Physics

Q: (a). On January 22, 1943, the temperature in

(a). On January 22, 1943, the temperature in Spearfish, South Dakota, rose from -4.0°F to 45.0°F in just 2 minutes. What was the temperature change in Celsius degrees? (b). The temperature in Brown...

Q: A loud factory machine produces sound having a displacement amplitude of 1

A loud factory machine produces sound having a displacement amplitude of 1.00 µm, but the frequency of this sound can be adjusted. In order to prevent ear damage to the workers, the maximum pressure a...

Q: (a). Whale communication. Blue whales apparently communicate with each

(a). Whale communication. Blue whales apparently communicate with each other using sound of frequency 17 Hz, which can be heard nearly 1000 km away in the ocean. What is the wavelength of such a sound...

Q: Convert the following Kelvin temperatures to the Celsius and Fahrenheit scales:

Convert the following Kelvin temperatures to the Celsius and Fahrenheit scales: (a). the midday temperature at the surface of the moon (400 K); (b). the temperature at the tops of the clouds in the...

Q: The pressure of a gas at the triple point of water is

The pressure of a gas at the triple point of water is 1.35 atm. If its volume remains unchanged, what will its pressure be at the temperature at which CO2 solidifies?

Q: (a). By what factor must the sound intensity be increased

(a). By what factor must the sound intensity be increased to raise the sound intensity level by 13.0 dB? (b). Explain why you don’t need to know the original sound intensity.

Q: At a temperature of 27.0C, what is the speed

At a temperature of 27.0C, what is the speed of longitudinal waves in (a). hydrogen (molar mass 2.02 g/mol); (b). helium (molar mass 4.00 g/mol); (c). argon (molar mass 39.9 g/mol)? See Table 19.1...

Q: (a). Calculate the one temperature at which Fahrenheit and Celsius

(a). Calculate the one temperature at which Fahrenheit and Celsius thermometers agree with each other. (b). Calculate the one temperature at which Fahrenheit and Kelvin thermometers agree with each o...

Q: You put a bottle of soft drink in a refrigerator and leave

You put a bottle of soft drink in a refrigerator and leave it until its temperature has dropped 10.0 K. What is its temperature change in (a) F° and (b) C°?

Q: A constant-volume gas thermometer registers an absolute pressure corresponding to

A constant-volume gas thermometer registers an absolute pressure corresponding to 325 mm of mercury when in contact with water at the triple point. What pressure does it read when in contact with wate...