What is meant by a wave medium?
a. a wave of moderate amplitude
b. water
c. air
d. any material through which a wave travels
D
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An ideal air-filled parallel plate capacitor with plate a separation of 4.0 cm has a plate area of 0.040 m2. What is the capacitance of this capacitor with air between these plates? (?0 = 8.85 × 10-12 C2/N ? m2)
A) 89 pF B) 8.9 nF C) 8.9 pF D) 0.89 pF E) 8.9 µF
An ideal massless spring with a spring constant of 2.00 N/m is attached to an object of 75.0 g. The system has a small amount of damping
If the amplitude of the oscillations decreases from 10.0 mm to 5.00 mm in 15.0 s, what is the magnitude of the damping constant b? A) 0.0100 kg/s B) 0.00693 kg/s C) 0.00762 kg/s D) 0.00857 kg/s E) 0.0462 kg/s
The largest known black holes:
A) create the dark nebulae in the plane of the Milky Way. B) can be no more than 1.4 solar masses, according to Chandrasekhar. C) lie in the cores of the most massive galaxies. D) can be no bigger than a small city, just like neutron stars. E) can be no bigger than the Earth, like white dwarfs.
All the planets in the solar system rotate in the same direction as they orbit the Sun
Indicate whether the statement is true or false