Calculate the Earth's angular momentum in the approximation that treats the Earth's orbit around the Sun as a circle. (MSun = 1.99 × 1030 kg; T = 3.156 × 107 s; ME = 5.98 × 1024 kg.)
What will be an ideal response?
2.67 × 1040 kg?m2/s
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How old is Earth, according to the vast majority of scientists?
A) a few thousand years B) about 100 billion years C) a few billion years D) about a billion years E) a few million years
At what distance from the central axis of a long straight thin wire carrying a current of 5.0 A is the magnitude
of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about 5.0 × 10-5 T? (?0 = 4? × 10-7 T ? m/A) A) 5.0 cm B) 4.0 cm C) 2.0 cm D) 3.0 cm E) 1.0 cm
Which of the following is the largest dwarf planet?
a. Ceres b. Mercury c. Pluto d. Eris
What is the particle referred to as a WIMP?
a. the result of a neutrino oscillation b. a hypothetical particle left over from the Big Bang c. a hypothetical particle in the MOND theory d. none of the above