What holds the electron to the nucleus of an atom?
a. Coulomb force b. binding energy
c. thermal energy d. heat
b
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Uniform Circular Motion: An object moves in a circular path at a constant speed. Compare the direction of the object's velocity and acceleration vectors.
A. Both vectors point in the same direction. B. The vectors point in opposite directions. C. The vectors are perpendicular to each other. D. The acceleration is zero but the velocity is constant.
For radio reception in city buildings, diffraction is
A) helpful. B) a hindrance. C) not a factor.
In alpha decay the mass number (the total number of protons and neutrons) of the parent nuclide decreases by
A. 0 B. 2 C. 4 D. 6
The direction of heat flow between two objects depends on the amount of internal energy each of the objects has
Indicate whether the statement is true or false