In addition to being the largest moon in the solar system, Ganymede, the Galilean moon of Jupiter, is
A) the only moon to have its own internal magnetic field
B) the only moon to have its own atmosphere
C) more geologically active than the Earth
D) the only moon to show evidence for a subsurface ocean of water
A
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Discuss the mass, temperature, color and size of an M3V star, compared to the Sun
What will be an ideal response?
A ball is projected upward at time t = 0 s, from a point on a flat roof 90 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground. The initial velocity of the ball is 80.5 m/s
Consider all quantities as positive in the upward direction. The vertical velocity of the ball when it is above the ground is closest to A) -81 m/s. B) -64 m/s. C) -48 m/s. D) -32 m/s. E) -97 m/s.
Metal alloys dispersion strengthened with oxide particles are usually produced by _________metallurgy techniques.
Fill in the blank(s) with the appropriate word(s).
A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = ?2.3 N/C, Ey = Ez = 0 . If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vz = 20 m/s, vx = vy = 0, what is the distance from the origin to the particle at t = 2.0 s?
a. 60 m b. 54 m c. 69 m d. 78 m e. 3.2 m