How about a piece of chromite?
What will be an ideal response?
a piece of chromite sink in the liquid
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Why is a global magnetic field thought to be necessary for life to exist on the surface of a planet?
A) A magnetic field shields the planet from harmful ultraviolet light. B) A magnetic field helps form ozone in the upper atmosphere. C) A magnetic field helps keep the planet's atmosphere from being stripped away by stellar winds. D) A magnetic field helps warm the planet's surface through the greenhouse effect.
The units T·m2/s are equivalent to:
a. W. b. V. c. N/m. d. webers.
Why do instruments that are looking for transiting planets need to look for very small brightness changes?
What will be an ideal response?
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/ . The child is standing 4.65 m from the center of the merry-go-round
What is the magnitude of the acceleration of the child? A) 8.05 m/s2 B) 7.27 m/s2 C) 2.58 m/s2 D) 3.46 m/s2 E) 4.10 m/s2