The Oort cloud is at a distance of 500 AU from the Sun
Indicate whether the statement is true or false
False
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What happens to the magnitude of the charge on each plate of a capacitor if the potential difference between the conductors is doubled?
1.It becomes four times larger. 2.It becomes two times larger. 3.It is unchanged. 4.It becomes one-half as large. 5.It becomes one-fourth as large.
A particle moves at a constant speed in a circular path with a radius of 2.06 cm. If the particle makes four revolutions each second, what is the magnitude of its acceleration?
a. 20 m/s2 b. 18 m/s2 c. 13 m/s2 d. 15 m/s2 e. 24 m/s2
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. The mass of a nickel atom is 9.75 × 10-26 kg
What is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 J ? s, h = 1.055 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 0.023 eV B) 0.019 eV C) 0.015 eV D) 0.031 eV E) 0.027 eV
The coefficients needed to balance the equation Ga + Br2 ? GaBr3 are, respectively,
a. 4, 3, and 2. b. 2, 3, and 2. c. 1, 3, and 2. d. 2, 1, and 2.