Two devices that make use of the wavelike nature of electrons are the ______________ and the __________
Fill in the blank(s) with correct word
electron microscope, scanning tunneling microscope (STM)
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A straight wire is carrying a current of 2.0 A. It is placed at an angle of 60° with respect to a magnetic field of strength 0.20 T. If the wire experiences a force of 0.40 N, what is the length of the wire?
A) 1.0 m B) 1.2 m C) 1.4 m D) 1.6 m E) 1.8 m
A charge of 25 nC is uniformly distributed along a circular arc (radius = 2.0 m) that is subtended by a 90-degree angle. What is the magnitude of the electric field at the center of the circle along which the arc lies?
a. 81 N/C b. 61 N/C c. 71 N/C d. 51 N/C e. 25 N/C
The rings of Saturn consist primarily of ________.
A. methane and ammonia B. water ice C. hydrogen and helium D. silicate rocks
What is the symbol for the element whose atoms have 40 electrons each?
a. Ge b. Zr c. Ar d. None of these