What is being shown in the zoom-out box of this painting?
A) the formation of a jovian planet
B) the solar nebula
C) the formation of a terrestrial planet
D) the formation of Saturn's rings
A) the formation of a jovian planet
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How is the Moon's mantle different from Earth's?
A. The lunar mantle is too cold to form convection cells. B. The lunar mantle extends to the center of the Moon. C. The Moon's mantle has a higher density than Earth's. D. The lunar mantle has a different composition than Earth's.
How did Ptolemy explain the retrograde motion of Mars?
What will be an ideal response?
A steel wire, 3.2 m long, has a diameter of 1.2 mm. The wire stretches 1.6 mm when it bears a load. Young's modulus for steel is 2.0 × 1011 Pa. The mass of the load is closest to
A) 28 kg. B) 24 kg. C) 16 kg. D) 20 kg. E) 12 kg.
A proton is accelerated from rest through 0.50 kV. It then enters a uniform magnetic field of 0.30 T that is oriented perpendicular to its direction of motion
(a) What is the radius of the path the proton follows in the magnetic field? (b) How long does it take the proton to make one complete circle in the magnetic field?.