Which of the following ions is not isoelectronic with the other three?
a. Cl-
b. K+
c. Br-
d. P3-
c
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The "Isaac Newton of electromagnetism" was
A) Faraday. B) Maxwell. C) Schiglegrueber. D) Hertz. E) Einstein.
A drill bit can become very hot when one is drilling a hole in a metal plate. If we take the system to be the drill bit, does heat flow into or out of the system?
A. Heat flows into the system. B. Heat flows out of the system. C. No heat flows in either direction.
Suppose that a certain atom had just 4 different energy levels. How many different frequencies could be emitted by this atom?
A) 6 B) 10 C) 16 D) 4 E) an infinite number.
A car's initial velocity is 50.0 km/h in the direction 60.0° north of east, and its final velocity is 70.0 km/h in the direction 40.0° south of east. If the time period for this journey is 30.0 minutes, what is the magnitude of the car's average acceleration?
a. 186 km/h/h b. 240 km/h/h c. 92.8 km/h/h d. 3.94 km/h/h