Consider a particle composed of quarks
(a) The negative pion is composed of what combination of up and down quarks?
(b) Is the negative pion a baryon or meson?
(c) Is the negative pion a lepton or a hadron?
(a) d
(b) meson
(c) hadron
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An inductor has a current I = 0.5A cos[( 275 s-1 ) t] . The maximum emf across the inductor is equal to 0.5 V. What is the self-inductance of the inductor?
A) 4.37 mH B) 3.64 mH C) 2.75 mH D) 0.73 mH E) 1.43 mH
How are the event horizon and Schwarzschild radius related?
A) The Schwarzschild radius is smaller than the distance from the singularity of a black hole to the event horizon. B) The Schwarzschild radius is equal to the distance from the singularity of a black hole to the event horizon. C) The Schwarzschild radius is greater than the distance from the singularity of a black hole to the event horizon. D) The size of the Schwarzschild radius is unrelated to the distance from the singularity of a black hole to the event horizon. E) The size of the Schwarzschild radius is proportional to the distance from the singularity of a black hole to the event horizon.
The coefficient of linear expansion of copper is 17 × 10-6 K-1
A block of copper 30 cm wide, 45 cm long, and 10 cm thick is heated from 0°C to 100°C What is the change in the volume of the block? A) 2.3 × 10-5 m3 B) 4.6 × 10-5 m3 C) 5.2 × 10-5 m3 D) 6.9 × 10-5 m3 E) 13.8 × 10-5 m3
A Young's interference experiment is conducted with violet argon laser light (? = 409 nm). The separation between the slits is 0.66 mm, and the interference pattern appears on a screen 3.8 m away. What is the spacing between the bright fringes? (1 nm = 10?9 m)
a. 1.5E–3 m b. 2.4E–3 m c. 1.5E+4 m d. 4.7E–3 m e. 1.6E–3 m