Define the velocity, wavelength, and frequency of a wave and give an example of each. Use symbol notation in the definitions
The velocity (v) of a wave is the distance the wave travels per unit of time. The
velocity of a sound wave in air is 330 m/s at 0°C. The wavelength (?) is the distance
between two similar points on any two consecutive waves. The wavelength of the
sound wave is given in meters. The frequency is the number of cycles per unit time.
The frequency (f) of the sound wave is measured in Hz.
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Mercury's _______________ are marked by meteorite craters less than 15 km in diameter, in addition to secondary craters
Fill in the blank(s) with correct word
Magnetic Field of a Long Wire: Which one of the following statements is correct?
A. When a current-carrying wire is in your right hand, with your thumb in the direction of the current, your fingers point opposite to the direction of the magnetic field lines. B. When a current-carrying wire is in your right hand, with your thumb in the direction of the current, your fingers point in the direction of the magnetic field lines. C. When a current-carrying wire is in your left hand, with your thumb in the direction of the current, your fingers point in the direction of the magnetic field lines.
A 5-kg shark swimming at 1 m/s swallows an absent-minded 1-kg fish swimming toward it at 4 m/s. The speed of the shark after his meal is
A) 1/2 m/s. B) 1/5 m/s. C) 1/6 m/s. D) 2/3 m/s. E) 3/2 m/s.
A 2-mol ideal gas system undergoes an adiabatic process where it expands and does 24 J of work on its environment. What is its change in internal energy?
a. ?24 J b. ?12 J c. zero d. +24 J e. +12 J