A particle moves at a constant speed in a circular path with a radius of 2.06 cm. If the particle makes four revolutions each second, what is the magnitude of its acceleration?
a. 20 m/s2
b. 18 m/s2
c. 13 m/s2
d. 15 m/s2
e. 24 m/s2
c
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A 2.0 kg ball is attached to one end of a light rod that is 1.2 m long. The other end of the rod is loosely pinned at a frictionless pivot. The rod is raised until it is vertical, with the ball above the pivot
The rod is released and the ball moves in a vertical circle. The tension in the rod as the ball moves through the bottom of the circle is closest to: A) 20 N B) 40 N C) 60 N D) 80 N E) 100 N
An atom that has fewer electrons than protons is called a/an
A) molecule. B) solid. C) ion. D) plasma.
Exclusion Principle: For the ground state of the hydrogen atom, which of the following numbers represents the correct value of the magnetic quantum number?
A. -1 B. 0 C. 1 D. 2 E. -2
According to the ideal gas law, the only way to have high pressure is by having a high density.
Answer the following statement true (T) or false (F)