Two capacitors with capacitances of 1.5 mF and 0.25 mF, respectively, are connected in parallel. The system is connected to a 100-V battery. What electrical potential energy is stored in the 1.5-mF capacitor?
a. 1.2 × 10^-3 J
c. 0.50 × 10^-3 J
b. 1.9 × 10^-3 J
d. 7.5 × 10^-3 J
D
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Which of the following statements is correct?
1.If an equation is dimensionally correct it must be true and if it is not dimensionally correct it may be true. 2.If an equation is dimensionally correct it may be true and if an equation is not dimensionally correct it may be true. 3.If an equation is dimensionally correct it may be true and if it is not dimensionally correct then it cannot be true. 4.If an equation is dimensionally correct it must be true and if an equation is not dimensionally correct it cannot be true.
If a K0 meson at rest decays in 0.89 × 10^?10 s, how far will a K0 meson moving at 0.96 c travel through a bubble chamber?
a. 17 cm b. 1.1 cm c. 53 cm d. 42 mm e. 9.2 cm
Which of the following statements best describes the two principle advantages of telescopes over eyes?
A) Telescopes can collect far more light with far better angular resolution. B) Telescopes can collect far more light with far greater magnification. C) Telescopes collect more light and are unaffected by twinkling. D) Telescopes have much more magnification and better angular resolution.
Determined the first value of the Hubble parameter
A. Gerard de Vaucouleurs |
B. Georges Lemaître |
C. Hubble’s Law |
D. Edwin Hubble |
E. Velocity or Speed |
F. Ho |