Magnesium has atomic number 12 . In its ground state, how many electrons are in its n = 3 shell?
a. 2 b. 8
c. 16 d. 10
a
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A person on a sled coasts down a hill and then goes over a slight rise with speed 2.7 m/s. The top of this rise can be modeled as a circle of radius 4.1 m
The sled and occupant have a combined mass of 110 kg. If the coefficient of kinetic friction between the snow and the sled is 0.10, what friction force is exerted on the sled by the snow as the sled goes over the top of the rise? What will be an ideal response?
An M type star 1,000 times more luminous than the Sun will be located near the ________ part of the H-R diagram.
A. bottom right B. center C. top left D. top right E. bottom left
Some antiparticles are identical to the particles they correspond to
a. True b. False Indicate whether the statement is true or false
The symbol indicating the number of protons in a nucleus is __________
Fill in the blank(s) with correct word