What is the frequency of a pressure wave of wavelength 2.5 m that is traveling at 1400 m/s?
A) 178 Hz
B) 1.78 kHz
C) 560 Hz
D) 5.6 kHz
C
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The local solar time at 75°W is 12:00 noon. What is the longitude of an observer who sees the full moon on her meridian at this time?
Carbon has a negative temperature coefficient of resistance of –0.5 × 10^–3 (°C)?1 . What temperature increase would result in a resistance decrease of 1.0% for a carbon resistor?
a. 2.0°C b. 20°C c. 20°C d. 50°C e. 100°C
When we say that Jupiter is at opposition, we mean that it
A) appears on the opposite side of the sky from the Sun, so that it is on our meridian at midnight. B) is behind the Sun as seen from Earth, so that it appears close to the Sun in our sky. C) is at its greatest western elongation. D) is at the point in its orbit where it is farthest from the Sun.
The H3O+ ion is called the ______________ ion
Fill in the blank(s) with correct word