Asteroids are an example of planetesimals
a. True
b. False
Indicate whether the statement is true or false
True
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Orbital Angular Momentum: In an excited hydrogen atom, the electron is in the 4d state. If this atom is in an external magnetic field, what are the smallest and largest possible angles between the orbital angular momentum and the direction of the magnetic field (or any other direction, for that matter)?
Fill in the blank(s) with the appropriate word(s).
A long thin uniform rod of length 1.50 m is to be suspended from a frictionless pivot located at some point along the rod so that its pendulum motion takes 3.00 s. How far from the center of the rod should the pivot be located?
A) 7.98 cm B) 7.52 cm C) 8.73 cm D) 8.40 cm E) 23.4 cm
During the growth of planetesimals to protoplanets, could the planetesimals have collided into one another? Why or why not?
What will be an ideal response?
Igneous rock that formed on Earth's surface by solidification of lava is known as
a. extrusive rock. b. intrusive rock. c. metamorphic rock. d. silicate rock.