The amount of heat necessary to change the temperature of 1 kg of a substance by 1°C is called the substance's
A. specific heat.
B. latent heat.
C. heat of combustion.
D. mechanical equivalent of heat.
A. specific heat.
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The more powerful the motor is
a. the longer the time interval for doing the work is. b. the shorter the time interval for doing the work is. c. the greater the ability to do the work is. d. the shorter the workload is.
The mass of a sulfur atom is 32.0 u, and the mass of a fluorine atom is 19.0 u. What is the mass of a mole of sulfur hexafluoride (SF6)?
A. 41.0 g B. 20.5 g C. 106 g D. 146 g E. 211 g
An elephant can hear sound with a frequency of 15.0 Hz. What is the wavelength of this wave? The speed of sound in air is 343 m/s
What will be an ideal response?
Forbidden transitions and selection rules suggest that
a. a photon has linear momentum. b. a photon has energy. c. a photon has angular momentum. d. a photon has parity. e. a photon has mass.