A(n) ______________ converts electrical energy into mechanical energy
Fill in the blank(s) with correct word
motor
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Saturn's rings are composed of icy particles
a. True b. False Indicate whether the statement is true or false
When an electron in an atom goes from a higher energy state to a lower energy state, the atom
A) absorbs a photon of a specific frequency. B) can absorb a photon of any frequency. C) emits a photon of a specific frequency. D) absorbs several photons of a specific frequency. E) can emit a photon of any frequency.
A lathe, initially at rest, accelerates at 0.60 rad/s2 for 10 s, then runs at a constant angular velocity for 20 s, and finally decelerates uniformly for 10 s to come to a complete stop. What is its average angular velocity?
A) 4.5 rad/s B) 3.5 rad/s C) 5.0 rad/s D) 3.0 rad/s E) 4.0 rad/s
The ground state electronic configuration for silicon is 1s22s22p63s23p2 . Which of the following elements would be expected to be chemically similar to silicon?
a. boron with configuration 1s22s22p1 b. lithium with configuration 1s22s1 c. carbon with configuration 1s22s22p2 d. sodium with configuration 1s22s22p63s1