Ionic bonding is caused by
A)
the sharing of electrons between atoms.
B)
the transfer of electrons between atoms.
C)
unequal charge distributions around neutral molecules.
D)
atoms bonding to hydrogen molecules.
E)
atoms bonding to oxygen molecules.
B
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Imagine that the magnet is moving downward instead of upward. 
In this situation, specify the directions of each of the vector quantities described below. Use the answer chart provided above and to the right (note that answers B and E refer to the +y and -y directions, respectively). What is the direction of 
at the origin (point O)?
A. A B. B C. C D. D E. E F. F T. Zero
A spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a string tightly wound around the inner core. The spool is free to roll without slipping on a horizontal surface
If the string unwinds horizontally from the top of the core with a constant speed of 29.0 cm/s, what is the speed of the spool? A) 17.4 cm/s B) 25.0 cm/s C) 37.5 cm/s D) 50.0 cm/s E) 75.0 cm/s
What prevents gravity from pulling you through the ground to the center of the Earth? Choose the best answer
1.The density of matter is too great. 2.The positive nuclei of your body’s atoms repel the positive nuclei of the atoms of the ground. 3.The density of the ground is greater than the density of your body. 4.Atoms are bound together by chemical bonds. 5.Electrons on the ground’s surface and the surface of your feet repel one another.
A 320-g air track cart is traveling at 1.25 m/s and a 270-g cart traveling in the opposite direction at 1.33 m/s. What is the speed of the center of mass of the two carts?
A) 2.80 m/s B) 0.0693 m/s C) 0.131 m/s D) 1.47 m/s E) 1.29 m/s