If the source moves, the wavelength of the sound in front of the direction of motion is smaller than the wavelength behind the direction of motion
Indicate whether the statement is true or false
T
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An adiabatic process occurs when
A) no thermal energy enters or leaves the system. B) thermal energy leaving a system is greater than thermal energy entering a system. C) thermal energy leaving a system is less than thermal energy entering a system. D) none of these
A small object with a 5.0-?C charge is accelerating horizontally on a friction-free surface at 0.0050 m/s2 due only to an electric field
If the object has a mass of 2.0 g, what is the magnitude of the electric field? A) 0.0020 N/C B) 2.0 N/C C) 4.0 N/C D) 1.0 N/C E) 0.0040 N/C
Star may appear fainter due to the interstellar medium. This effect is known as ____________________
a. interstellar reddening b. interstellar extinction c. interstellar absorption line d. interstellar dust
Which of the following is NOT a property of neutrinos?
A) Can change forms in the eight minutes from the Sun's core to us B) Almost massless C) Can travel very close to the speed of light D) Neutral in charge E) Cannot interact at all with normal matter