Which is the correct order of planetary object class during their formation?

a. planetesimals, protoplanets, and planets
b. planets, planetesimals, and protoplanets
c. planetesimals, planets, and planetettes
d. protoplanets, planetesimals, and planets
e. planetesimals, planetettes, and planets


a

Physics & Space Science

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Taking up as positive, which values represent the ball's vertical velocity and acceleration at points A, C, and E in the figure?

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If the same-sized force is made to act over a smaller area, the pressure is

a. decreased. b. increased. c. unchanged. d. dependent upon the shape of the area.

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Spheres are an essential part of Kepler's three fundamental rules of planetary motion

a. True b. False Indicate whether the statement is true or false

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An electron moving in the positive x direction experiences a magnetic force in the positive z direction. If Bx = 0, what is the direction of the magnetic field?

a. negative y direction b. positive y direction c. negative z direction d. positive z direction e. negative x direction

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